Question about 1988 Chevrolet Camaro

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Code36 topic: changed out MAF sensor (was c33), worked great, now c36! where is the location of this "burn off ciruit" at so I can check or change it out? Its not in my manual.

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The "burn off " relay is located underhood on center firewall.

Posted on Jul 18, 2009

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Posted on Jan 02, 2017

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Why is my 2004 gmc yukon 5.3 Z model Burning gas?


Was the fuel mileage better prior to replacing these parts? Did you use an aftermarket MAF sensor? Have you checked scan data parameters with a scan tool hooked to the vehicle for a test drive? I have experienced some aftermarket MAF sensors causing issues. as they are not calabrated properly for vehicle application. They will work, but with side affects such as yours. A road test with a scan tool hooked up and a technician that knows how to interpet the data should be able to give some insight as to what is causing the problem

Feb 23, 2016 | 2004 GMC Yukon

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Intake air temperature sensor on engines


1.2) IAT - Intake Air Temperature sensor

What is it? The intake air temperature sensor is a small electrical device (Thermistor - temperature dependent resistor) that consists of a small bead on a loop of wire held within a plastic safety frame.

Where is it located? Is most often found associated with the MAF (AMM) in the air ducting immediately after the air filter/cleaner box. On cars without a MAF (a manifold pressure sensor - MAP usually takes on the role) the IAT may be sited nearer the throttle opening in the air ducting. It has only two wires that make connection with it. However, when located with the MAF, a combined multi-pin plug will serve both devices.

How does it work? It measures the intake air temperature by simply measuring the resistance in the thermistor bead on the wire. The IAT is most commonly located alongside the MAF. The IAT thermistor sends a signal proportionate to the air temperature (if the usual NTC thermistor the resistance drops with increasing temperature; if PTC type them resistance increases with increasing temperature). With the engine running, fresh air is drawn through the ducting and cools the heated MAF. The temperature of the air, in conjunction with its ability to cool the MAF allows the ECU to determine the mass of air entering the engine and thereby to select the appropriate amount of fuel by adjusting the injection times.

Symptoms of a faulty IAT
Associated OBD2 error codesDTCs: P0110 - P0114; P0127

  • Higher erratic idle speed - If the IAT is at fault the ECU cannot accurately work out the mass of air entering the engine and may use a default value that is inappropriate.
  • Erratic engine - In the absence of signals from the IAT and MAF the ECU takes readings from the TPS and other sensors and this causes a rough running engine.

How to Check? Unplug the device from the duct and check that it is clean. Put a voltmeter across the contacts and measure the resistance due to the ambient air temperature. If you then breathe on it, raising the local air temperature around the probe, you will see the resistance change as a consequence. You are looking for a change in resistance in line with a change of air temperature. If there is infinite resistance, consistent with a broken circuit, or there is no measurable response to change in air temperature then the IAT is faulty.

How to Fix? Replace it


NEXT 1.3 TPS Throttle Position Sensors

on Jul 15, 2011 | Mercedes-Benz E-Class Cars & Trucks

2 Answers

Check engine light on, scan code p0175. I already change MAF and check O2 sensors. have you any advice?


code p 0175 refers to system too rich bank 2===causes --intake blocked ---EVAP canister purge valve ---fuel pressure ---EGR system---injector/s ---HO2S
basically you changed the wrong sensor as the HO2S sensor is the sensor in the exhaust manifold or before the cat converter
It tells the ECM to adjust the injector flow for that bank to a leaner mixture (O2 sensors are after the cat and tell the ECM if the mixture is right for complete burn
it could be from a bad injector that is leaking at the tip and the ECM cannot control the fuel mix

Jan 21, 2016 | 2006 Hyundai Tucson 4WD 2.7L V6

1 Answer

Why does engine run great when first crank them misfire when warms up 2001 tundra v8


this could be:

1. EGR valve

2. Vacuum leak

3. MAF sensor

4. Oxygen sensors

5 Idle air control

6. Ignition components.

7. Valve seats

Start with vacuum leaks and check all the hoses and connections. If the oxygen sensors have never been changed, you should do that. They are like light bulbs and they burn out. The other things are to check the MAF sensor to see if it is clean, Same with the idle air motor and then check the valves etc with a cylinder leak down test.

Jul 26, 2015 | Cars & Trucks

1 Answer

2003 hyundai accent GS chucking


This is the MAF. Its on the intake at the air inlet
10_15_2012_2_29_16_am.jpg

Oct 14, 2012 | 2003 Hyundai Accent

1 Answer

1988 chevrolet celebrity starts but has no power to run


Is this a 2.8L vin W? I saw a service bulletin that said, do not replace maf sensor for maf sensor code. You install a new mem-cal. The new memcal doesn't use the maf signal, but does use the mat. If the update had been done on your vehicle, there should be a decal under the hood to notify you about the update. They did this because of problems with the maf sensor, at the time.
Just to add, problems at higher rpms, check for a blockage of some kind, air--fuel--exhaust. Use a gage and check proper fuel pressure.

Feb 15, 2018 | Chevrolet Celebrity Cars & Trucks

1 Answer

Iat sensor high input


What is it? The intake air temperature sensor is small electrical device (Thermistor - temperature dependent resistor) that consists of a small bead on a loop of wire held within a plastic safety frame.


Where is it located? Is most often found associated with the MAF (AMM) in the air ducting immediately after the air filter/cleaner box. On cars without a MAF (a manifold pressure sensor usually takes on the role) the IAT may be sited nearer the throttle opening in the air ducting. It has only two wires that make connection with it. However, when located with the MAF, a combined multi-pin plug will serve both devices.


How does it work? It measures the intake air temperature by simply measuring the resistance in the thermistor bead on the wire. The IAT is most commonly located alongside the MAF. The IAT thermistor sends a signal proportionate to the air temperature (if the usual NTC thermistor the resistance drops with increasing temperature; if PTC type them resistance increases with increasing temperature). With the engine running, fresh air is drawn through the ducting and cools the heated MAF. The temperature of the air, in conjunction with its ability to cool the MAF allows the ECU to determine the mass of air entering the engine and thereby to select the appropriate amount of fuel to use by altering the injection times.


Symptoms of a faulty IAT


  • Higher erratic idle speed - If the IAT is at fault the ECU cannot accurately work out the mass of air entering the engine and may use a default value that is inappropriate.
  • Erratic engine - In the absence of signals from the IAT and MAF the ECU takes readings from the TPS and other sensors and this causes a rough running engine.


How to Check? Unplug the device from the duct and check that it is clean. Put a voltmeter across the contacts and measure the resistance due to the ambient air temperature. If you then breathe on it, raising the local air temperature around the probe, you will see the resistance change as a consequence. You are looking for a change in resistance in line with a change of air temperature. If there is infinite resistance, consistent with a broken circuit, or there is no measurable response to change in air temperature then the IAT is faulty.


How to Fix? Replace it

Dec 11, 2010 | 2002 Mitsubishi Galant

1 Answer

1992 s-10 runs great then will die and not want to start back up i have change the fuel pump, maf sensor, throttle control sensor


Three things you might want to try: check your fire(make sure your plugs are not fouled and your distributor cap and rotor button are not burned) and also check your fuel filter and air filter.

Sep 21, 2010 | 1992 Chevrolet S-10

2 Answers

My 4runner is getting bad gas mileage and won't pull a rolling hill without revving up to 4k. Normally it will hold 70-75 up a rolling hill around 3k. It even felt like it was backing down a knoctch and...


It could be a number of things. My recommendations are as follows:
-bad gas (run some bottles of lucas and injector cleaner thru)
-change air filter
-change fuel filter
-clean MAF sensor with MAF sensor cleaner ONLY
-check MAF sensor voltage readings as per service manual
-Re-calibrate throttle position sensor. They tend to need this around 120-150k miles
-check vacuum level
-check cylinder compression
-Depending on mileage and if there are any codes, replace O2 sensors with Denso only sensors
-Not likely, but the cat could be restricted too

My '01 was doing the exact same thing, and it turned out to be the MAF was dirty- and the fix took about 2minutes and ran me ~$5 for a can of MAF cleaner.

Hope this helps,
C


Mar 01, 2010 | 2001 Toyota 4Runner

1 Answer

Check engine light


MAF is Mass Air Flow it is located in the air induction pipe between the air filter box and the throtle body. Try getting some Mass Air Flow Sensor cleaner and clean it. Make sure it is completely dry before you reinstall it. Good Luck.

Jul 05, 2008 | 1986 Pontiac Firebird

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