Intake heater light

P0541 is a diagnostic trouble code (DTC) for "Intake Air Heater Relay 1 Low". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .

Engine oil pressure light will flash. 9. For cold weather starting, use the intake air heater system. Activate the intake air heater system by pushing in the ignition key switch with the key, and holding it there for the required time: 10 - 15 seconds for temperatures as low as -18C (0F).Jun 28, 2022 ... L Cummins grid heater deteriorates, falls into the intake ... Early detection of air intake heater failure often begins with a check engine light ...Hey Everyone, Diagnosing these Relay's or Solenoid's whatever you want to call them is really easy and if they do not work your truck will have a really hard...The truck is throwing a Check engine code 70 (inlet air heater driver #1 fault> mode 13-out of calibration). Kinda new to this diesel stuff so sorry for the dumb questions. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.Aug 21, 2018 · The intake heater grid light on the dash came on and it dos. the intake heater grid light on the dash came on and it dos not go out. Chris (aka-Moose) Technician. 3,024 satisfied customers. Glow plug light stays on. The glow plug light. 2006 2500. I was driving. It started ringing and the light came on. 1425 posts · Joined 2012. #1 · Dec 8, 2012. So I'm going to be deleting my intake air heater, and I'm not sure what to change. Under the engine calibrations and the intake heater section, there is a: intake heater timer (IAT), intake heater timer (ECT), intake heater timer (Baro), intake heater key-on disable and intake heater time allowed.Jul 31, 2016 ... vehicle came in with an engine light and a code P0540 " Intake Air Heater Incorrect Voltage". Be sure and check out the all new "Outdoor w ...Not sure if that is necessary but i feel better doing that for the CP3. I just remember to fire it off before the grid heater light goes off. This should abort the grid heater cycle and self test that throws the light. ... Images of nut and intake plenum without grid heater . Attachments. 20210307_140903.jpg. 1.6 MB Views: 188 ...

Intake heater light keeps coming o. And off and truck won’t maintain speed. Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Truck Mechanic I'm going to connect you with knows all the tricks and shortcuts. Ok.On older trucks the grid heaters are separate units and can be replaced fairly easily with spacers if you really wanted to, but on a 97 the grid heaters are built into the intake cover. It is absolutely not worth the effort to fully delete them, just disconnect them. 1997 2500 CCLB, NV4500, 3.54s. 389k on the clock.Test the High-Pressure Relief - This is fairly simple with an advanced scan tool. Just command the regulator up to achieve max fuel pressure. This should be somewhere around 27,500 psi. The relief valve is a calibrated mechanical spring that opens to return fuel back to the fuel filter, thus limiting max fuel pressure.Pulled the power lead from the heater and reset power loop with ~12V showing for the circuit to the heater without heater in the loop. So, it seems the heater itself is toasted out. Next i will attempt to test the heater, any suggestion other than be careful if it works it will get hot. Jun 1, 2018 / Testing the intake manifold heater timer #10.What does intake heater light mean? October 7, 2022 by We Answer. purpose is overheated air flowing into the engine from the intake manifold when starting. It illuminates when the “Wait To Start” light is on on your dashboard. Cummins uses it …I couldn't tell any difference with or without, except for the SES light and battery draw. Maybe if it got real cold here, or if I get somewhere really cold ...

open a can of worms. essentially there have been. a few cases of the grid heater bolt breaking off and finding a home pounded into the top of cylinder 6. the belief is the bolt loosens and electrical current arcs causing it to fall off, or constant elec current arcs causing it to fall into intake.You can buy EdenPURE’s innovative products, such as heaters, through the company website, you can also use the dealer locator on the company website to find the nearest EdenPURE de... P0542 is a diagnostic trouble code (DTC) for "Intake Air Heater "A" Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 . Jul 7, 2022 ... Diagnosing a p0380 glow plug/intake air heater code on a 2001 gmc sierra 3500 6.6 duramax turbo diesel.L. Lukek0680 Discussion starter. 2 posts · Joined 2019. #1 · Jan 1, 2019. My check engine light came on with a code of P0542 Air intake heater- high circuit. What would be the most probable cause for this code? Any help would be greatly appreciated.The symptoms of too much salt intake include water retention, dehydration and hypertension, reports SF Gate. Too much salt intake could lead to stomach cancer, kidney stones or ost...

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8 posts · Joined 2008. #1 · Jan 4, 2009. I have tested the relays (solenoids) now trying to test the actual grid heater just need to know how many ohms resistance should the element have. I know there is power to the heater just need to test the heater to make sure it is working correctly. Thanks for your time.Lifesmart - 6-Element Infrared Heater with Front Intake Vent and UV Light does its work. I had lot of health issues due to dryness in my study primarily due to heating through the HVAC. This changed when I bought Lifesmart - 6-Element Infrared HeaterDifferent JD models engage the heater in different ways. The manual for yours says to push in the key. I-Cold Start Indicator Light: Indicates that the ignition key is being pressed in and that the air manifold heater is on and heating the intake air to the cylinders, allowing faster starting in cold weather. Mar 19, 2010 / air intake heater #5.P0542 is a diagnostic trouble code (DTC) for "Intake Air Heater "A" Circuit High". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .

This system will operate when the sum of coolant temp and inlet air temp is less than 109* F. Make sure to wait to start until the intake air heater light goes out. The easiest way to see if the heater is working is to pull the air intake pipe off of the intake manifold. You should see the heater grid glow red like a toaster when the light is on.The only way I can get it to start is by planting a 100W light bulb on the air intake heater housing for 1-2 hours. Obviously , the electric air intake heater is not working (despite the "glow plug" light on the dash lighting up for 10 seconds, which it does). The housing does NOT heat up. I've replaced the ($155! from a JD dealer) control module.This should abort the grid heater cycle and self test that throws the light. Ambient temp and coolant temp can also abort a cycle. For a year i turned the key instantly with the grid heater attached. It would skip the pre heat cycle but i still felt like it was cycling after startup. I can not confirm this 100% though.The Lifesmart Infrared Fireplace Heater brings the warmth and beauty of a fireplace anywhere in your home without needing to be installed. Using 6 quartz infrared elements to produce comfort and heat. Perfect for heating rooms in your home with its 3 heat settings 1000 watt/1500 watt and an ECO mode that maintains a constant 68 degrees.Dieseler said: Needs to be colder out for the light to come on. 8 deg celcius is not cold when it gets down to freezing out will it come on. The manual says the glow heater comes on at 5c but when your testing the glow plug indicator light it should come on for between 15-19.5 seconds when you turn the ignition to G.Nov 3, 2019 · Intake heater light keeps coming o. And off and truck won’t maintain speed. Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. 2000 F-250 Super duty extened cab 4x4 7.3L Powerstroke. DP tuner 4 pos chip (Jody T) Garrett BB Turbo, magnaflow 4 inch turbo back exhaust. AFE Stage II intake Pro 7. Auto meter gauges, AIH Plug, deleted EBV, Warn 12,000lb winch,4 385,000cp KC Lights, Transformer brush guard and winch carrier, high presure cross over kit.The code is from the relay unplugged. The ECM is not seeing the relay. Try disconnecting the main power cable for the relay instead. The relay will still work. Just no longer supply power to the grid heater. I see no sensors for the grid heater circuit. See what you if any code you get after restoring the relay. Tom.The code is from the relay unplugged. The ECM is not seeing the relay. Try disconnecting the main power cable for the relay instead. The relay will still work. Just no longer supply power to the grid heater. I see no sensors for the grid heater circuit. See what you if any code you get after restoring the relay. Tom.1994 GMC Topkick has electrical problem. Intake heater light comes on then low coolant light comes on, speedometer goes bonkers and sometimes tack then engine shuts down. Turn key off and back on and … read moreDieseler said: Needs to be colder out for the light to come on. 8 deg celcius is not cold when it gets down to freezing out will it come on. The manual says the glow heater comes on at 5c but when your testing the glow plug indicator light it should come on for between 15-19.5 seconds when you turn the ignition to G.Cummins6speed. 5202 posts · Joined 2007. #7 · Oct 15, 2009. I took my cable that goes from the solenoid to the heater off. I sometimes get a code but rarely. When I unplugged the control wires from the solenoid it didn't like it at all and threw 2 or 3 codes. My truck: 06 5.9 6-speed 2/28/09-470hp/980tq Sold and missed.

1994 GMC Topkick has electrical problem. Intake heater light comes on then low coolant light comes on, speedometer goes bonkers and sometimes tack then engine shuts down. Turn key off and back on and … read more

MeBucko. 687 posts · Joined 2016. #8 · Mar 17, 2018. The only way I have seen searching the internbet on removing the CEL (code) is by using a EFI live tuner, as it allows you to fool the ECM by setting the input voltage for the intake heater to 0. No other tuner seems to be able to do this.469 posts · Joined 2009. #11 · Oct 25, 2009. Unplugged the maf sensor, removed the box, enlarged the holes on the side and opened a triangular one in the front. Just like the info on Kennedy diesel page. Holes are below the filter. Reinstalled the air box an filter.Step 1 of the daignostic test: Relay Clicking: Key ON engine OFF, with scan tool , actuate the heater. The heater can be actuated by immersing the Intake Air Temp Sensor in a cup of ice/water. If you …808 Posts. Posted - 05/30/2017 : 10:18:04 AM. I have a DT466 that we got back from the dealer . They had to do some work on the engine we installed . There were wiring issues . When we got it back the wait to start light would come on for 5 or 6 seconds and go off . A couple days later went to start the bus the wait to start light wouldn't come ...I've grafted a cummins intake heater grid onto my toyota 2L engine to assist with wintertime starting. It works great and I was able to start the engine at 17 F tonight with just the grid heater, no glow plugs. ... Anyway, offhand the wait to start light stays on for about 10 or 15 seconds before going off. Then will cycle for about 3~5 seconds ...Clean the air conditioner. 7. Leaky AC. Blocked condensate line or tube disconnection. Unblock the condensate line and reconnect disconnected tubes. 8. Fujitsu AC Won’t Turn Off. Dirty condenser or evaporator or a faulty sensor. Clean a dirty condenser or evaporator and call an expert to fix a faulty sensor.163. Wait to start light is not coming on. But engine starts. The wait to start light is for the engine intake air heater. When key is first turned on, all the lights on the dash come on for a couple of seconds, including the wait to start light. But it used to stay on for a few seconds after that, then go off signaling it was time to turn the ...This reset will work with most gas water heaters. Whirlpool, A. O. Smith, Rheem, Bradford White, GE General Electric, ao smith etc.how to light a pilot light...77 posts · Joined 2013. #1 · Sep 19, 2014. Deleted my grid heater a couple months ago with a GDP delete plate, now that it is a little colder in the mornings I am getting a check engine light due to it. I searched and couldn't find a thread that solves this without putting a throttle valve grid heater in. Does anyone know how to solve this ...

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First, go to Autozone, Checkers or Napa and get you a 01' Dodge oil drain plug. It needs to be 22mm x 1.5. After that go home and remove your CAI (cold air intake) . Next, unplug the MAP sensor for easier access to the AIH (air intake heater). Once you find the AIH (its located on the air intake Y bride in front of the turbo) unscrew the single ...Nov 3, 2012 ... my cat 3116 smokes when cold and I have noticed that the air heater does not come on, I checked the bulb and it is fine any ideas for ...Monitor heaters may turn off unexpectedly due to a clogged fuel filter, the air in the fuel line, or a malfunctioning thermostat. A clogged fuel filter can restrict fuel flow, causing the heater to shut down. Air in the fuel line can also disrupt fuel flow and lead to the heater turning off. A faulty thermostat may not accurately regulate the ...Aug 21, 2018 · The intake heater grid light on the dash came on and it dos. the intake heater grid light on the dash came on and it dos not go out. Chris (aka-Moose) Technician. 3,024 satisfied customers. Glow plug light stays on. The glow plug light. 2006 2500. I was driving. It started ringing and the light came on. Oct 19, 2018. #1. I am inquiring to all of ya'll as to any issues you may have with cold start of your Roxor. The Roxor uses and air inlet heater which will cycle at pre-start and during initial warm-up based on engine temp. You'll notice the heater indicator come on along with all other indicators during lamp test at ignition energize.76 posts · Joined 2011. #1 · Jul 30, 2011. I was driving today and the wait to start/glow plug light started flashing along with chimes. Now it's on permanently. Anyone know why that is. All other gauges read ok. No check engine light and truck starts and shuts down as normal. Any help would be appreciated.Jan 12, 2010. Staff. #9. The ECM monitors the circuit for continuity when the intake heater isn't on as the heater will read an almost dead short to ground, and then it reads 12 volts + when the realy is on. You could probably use a resistor and make it act as the heater to get rid of the codes without EFILIVE.18 posts · Joined 2009. #3 · Oct 9, 2015. I know you have EFI Live, but for those who don't, I used a load resistor to make sure my CEL didn't come on. I deleted mine and two days later, I had a Check engine light. It was for the air intake heater, so I erased the code, installed a load resistor and yet have the CEL come back on.Thanks, 60vette. Purpose is to warm air going from the intake manifold into the engine during starting. It is on when the "Wait To Start" light on your dash is on. Cummins uses it instead of glow plugs. The colder the ambient temperature, the less willing your engine will be to start.Dec 5, 2023 · nskyline34 Discussion starter. 1706 posts · Joined 2013. #5 · Dec 5, 2023. Well ordered a complete GDP setup - intake manifold, intake horn, and their high flow grid heater. More than I wanted to spend, but the only company that makes them specifically for the C&C trucks and plus I like the idea of the added flow of the intake horn. ….

Cummins6speed. 5202 posts · Joined 2007. #7 · Oct 15, 2009. I took my cable that goes from the solenoid to the heater off. I sometimes get a code but rarely. When I unplugged the control wires from the solenoid it didn't like it at all and threw 2 or 3 codes. My truck: 06 5.9 6-speed 2/28/09-470hp/980tq Sold and missed.Intake Grid Heater Light Comes On. ... 10 dings with grid light indicates what cerberusiam is talking about. Steps involved as far as prognosis. Last step is injectors. -2008 6.7l QCLB 4x4,g56,J-67(23ME),valair DD,64.5/72/14,2nd gen …620 posts · Joined 2009. #7 · Nov 13, 2014. The check engine light is probably on because you unplugged the sensors on the intake when you removed it. The remote start is disabled any time the check engine light is on. The cycling is normal I think until the truck warms up.The intake air heater (IAH) is located in the air inlet tube and is used to warm the incoming air to aid in starting the engine and for proper cylinder combustion. The glow plug control module (GPCM) will command the IAH on when the engine coolant temperature is below 140F. 05 Chevy 2500 CCSB.Features. The Lifesmart Infrared Fireplace Heater brings the warmth and beauty of a fireplace anywhere in your home without needing to be installed. Using 6 quartz infrared elements to produce comfort and heat. Perfect for heating rooms in your home with its 3 heat settings 1000 watt/1500 watt and an ECO mode that maintains a constant 68 degrees.Hoping the CEL and P1451 and P242F codes were thrown just because the air intake was disconnected by bonehead dealer for 20 miles. 2007.5 Dodge Ram 3500 Laramie 4WD QC LB DRW 3.73 Patriot Blue Save ShareCummins6speed. 5202 posts · Joined 2007. #7 · Oct 15, 2009. I took my cable that goes from the solenoid to the heater off. I sometimes get a code but rarely. When I unplugged the control wires from the solenoid it didn't like it at all and threw 2 or 3 codes. My truck: 06 5.9 6-speed 2/28/09-470hp/980tq Sold and missed.Intake Manifold Heater Light Stays On!! 5669 Views 5 Replies 4 Participants Last post by ColinP, Jan 8, 2016. P. pjcovey40 Discussion Starter ... Intake heater light, 07 6.7L Air Intake Heater - to delete or not to delete. I wouldn't call myself a complete DIY'er. I do about 70% of the fixes myself, and about 20% w shops, and only if I have no other choice, do a ever go to a dealer. So, I had my computer crash about 6 weeks ago. The PCM or ECM and a fuel pump was 3500 at the dealer., Have 91 topkick with 3116 cat engine intake heater was not working. changed switch on engine. Is hot on one side and - Answered by a verified Technician ... i have a 1998 gmc c6500 with a 3116 cat and the intake heater does not work.intake heater light does not come on in dash and i have power to relay beside grid heater.looking for …, L. Lukek0680 Discussion starter. 2 posts · Joined 2019. #1 · Jan 1, 2019. My check engine light came on with a code of P0542 Air intake heater- high circuit. What would be the most probable cause for this code? Any help would be greatly appreciated., Air Intake Heater Info. Hey guys, porting over here from CumminsForum for some info. I own a small performance parts business for 6.7L Cummins and I have customers looking to alter/relocate the factory grid heater on their motors because of how restrictive it is. I've seen on the 6.0L motor that Ford uses a kind of a plug style air intake ..., There were different key switches available. Some you turn to the left and hold it. Some switches are to the right and go off, on, heater, then way to the right to start. You will need to use a VOM and do a bit of testing to figure out what yours is. While trying to figure it out.. remember to push the key IN.., Air Intake Heater Info. Hey guys, porting over here from CumminsForum for some info. I own a small performance parts business for 6.7L Cummins and I have customers looking to alter/relocate the factory grid heater on their motors because of how restrictive it is. I've seen on the 6.0L motor that Ford uses a kind of a plug style air intake ..., Logged. Re: 8.3 (mechanical) Intake Preheater Problem. Reply #1 – November 23, 2023, 05:39:15 pm. The fuel solenoid needs 2 wires to operate if it is internally grounded and could have three wires which. would be the ground, One wire is the pull in circuit and the other wire is the hold in circuit. The intake preheater only works …, 1999 Dodge Cummins - No wait to start light. Replaced the intake heater. Intake heater solenoids. Would work for for a day and stop. Changed the temperature sensor and nothing. Disconnected the solenoid wire from the battery and reconnected it. Worked for 3 days then stopped when I replaced the battery terminals. Tested the wires., Dieseler said: Needs to be colder out for the light to come on. 8 deg celcius is not cold when it gets down to freezing out will it come on. The manual says the glow heater comes on at 5c but when your testing the glow plug indicator light it should come on for between 15-19.5 seconds when you turn the ignition to G., The intake air heater (IAH) is located in the air inlet tube and is used to warm the incoming air to aid in starting the engine and for proper cylinder combustion. The glow plug control module (GPCM) will command the IAH on when the engine coolant temperature is below 140F. 05 Chevy 2500 CCSB., Oct 2011. Posts. 9. The grid heater light on and the dinging sounds like that "feature" that Dodge incorporated into the ECM firmware a few years ago. Google P1222/P1223 DTC's and you will find a ton of info on this. Like Easymon mentioned, you have a high side fuel system issue., The intake heater grid light on the dash came on and it dos not go out. 2007 ram 2500 slt. I check the wire from the - Answered by a verified Dodge Mechanic. We use cookies to give you the best possible experience on our website. ... Intake heater isn't getting warm when the key is on., Test the High-Pressure Relief - This is fairly simple with an advanced scan tool. Just command the regulator up to achieve max fuel pressure. This should be somewhere around 27,500 psi. The relief valve is a calibrated mechanical spring that opens to return fuel back to the fuel filter, thus limiting max fuel pressure., open a can of worms. essentially there have been. a few cases of the grid heater bolt breaking off and finding a home pounded into the top of cylinder 6. the belief is the bolt loosens and electrical current arcs causing it to fall off, or constant elec current arcs causing it to fall into intake., Apr 11, 2011 · First, the heater should come on every time the key is turned to the on position. Then the Engine ECM checks the coolant and intake air temp and if they are high enough, the heater shuts off. Second, the 12volt power that operates the circuit comes from the truck, not the ECM. The most common reason for the heater not to work is a loss of power ... , open a can of worms. essentially there have been. a few cases of the grid heater bolt breaking off and finding a home pounded into the top of cylinder 6. the belief is the bolt loosens and electrical current arcs causing it to fall off, or constant elec current arcs causing it to fall into intake., Jun 24, 2010 · removing any obstacle in the path of airflow is a benefit! in this case the intake heater takes up about 50% of the real estate inside the y bridge. anything forced to move, naturally takes the path of least resistance. just like electricity. 06 GMC reg.cab dually 4x4, Red, s478 w/2.6 cover, built motor, mike l. stg4/1055. , Oct 2, 2023 ... ... light (CEL). We use the very capable and affordable Xtool D7 scan tool. Link to Xtool D7: https://amzn.to/3PepacU As an Amazon Associate I ..., removing any obstacle in the path of airflow is a benefit! in this case the intake heater takes up about 50% of the real estate inside the y bridge. anything forced to move, naturally takes the path of least resistance. just like electricity. 06 GMC reg.cab dually 4x4, Red, s478 w/2.6 cover, built motor, mike l. stg4/1055., A P2609 OBD-II trouble code means that the variation in the voltage to one or more of the intake air heater circuits has exceeded the manufacturer's stipulated levels. The resulting stored code results in an illuminated Check Engine light, though some models of vehicles might require multiple drive cycles, at least three, before the Service ..., During the cold weather a reliable indoor heater is crucial for your comfort and survival. Whereas regular maintenance of your furnace should prevent it from breaking down, you wil..., 1425 posts · Joined 2012. #1 · Dec 8, 2012. So I'm going to be deleting my intake air heater, and I'm not sure what to change. Under the engine calibrations and the intake heater section, there is a: intake heater timer (IAT), intake heater timer (ECT), intake heater timer (Baro), intake heater key-on disable and intake heater time allowed., SLIMLINE INFRARED HEATER – FRONT AIR INTAKE VENT UV LIGHT. MSRP $119. MODEL #HT1154UV. PRODUCT SPECS. Powerful Heating: two quartz infrared heating elements and one smart boost heating elements for faster heat up. 3 heat settings: 1,000w /. 1,500w / and ECO-maintains. a constant 68º., Intake Manifold Heater Light Stays On!! 5669 Views 5 Replies 4 Participants Last post by ColinP, Jan 8, 2016. P. pjcovey40 Discussion Starter ..., 469 posts · Joined 2009. #11 · Oct 25, 2009. Unplugged the maf sensor, removed the box, enlarged the holes on the side and opened a triangular one in the front. Just like the info on Kennedy diesel page. Holes are below the filter. Reinstalled the air box an filter., Bad intake air heaters and relays, a faulty PCM, and wiring problems are some of the issues that could trigger the code. Common indicators of code P0541 include a lit check engine light, a hard-starting engine, and an …, The truck is throwing a Check engine code 70 (inlet air heater driver #1 fault> mode 13-out of calibration). Kinda new to this diesel stuff so sorry for the dumb questions. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread., TWR. 1940 posts · Joined 2011. #3 · Jan 19, 2016. check the intake manifold air temperature sensor this sensor tells the ECM when to turn the grid heater on by what temp the intake is as i recall anything under 66 degrees it does not turn the heater on anything below 66 at start it turns it on the grid heater., In internal combustion diesel engines, fuel and intake air heaters are vital parts of the cold start system. They help the engine run better and start more ..., What causes the P2605 code? The most common reason for a P2605 code to be stored is that your intake heater relay has become faulty. Other causes include: Open or shorted …, P0541 is a diagnostic trouble code (DTC) for "Intake Air Heater Relay 1 Low". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 ., I found that made a big difference in cold weather starting. SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust syatem, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), …, banyon. If the grid heater was on you would see the draw on the amp meter. Keep a test light in the truck with you & when it comes on see if the grid solenoid is getting power. It should have power to one side but not to the grid itself. The intake air sensor is the one at the air cleaner.