Question about 1996 Chevrolet Tahoe
I have a 5.7 350 vortec an the check engine light wont go off ive checked with code reader why check engine light was on an it said maf low voltage an also the cam position sensor.......we went ahead an changed the maf sensor twice an air temperature switch an the cam positon sensor...i have did a live test while the car was bring drivein an it was saying that no air at all was passing thru the MAF but everything else was running fine.....im just lost at this point
Posted by Anonymous on
Did you clear the codes after you replaced the maf, the cel should go off after 50 cycles (ignition being turned off and on)
Posted on Jun 11, 2017
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Posted on Jan 02, 2017
At this point you need to test the signal from the MAP to the PCM (powertrain control module), it should vary between about 1 and 4 volts as you throttle the engine up and down quickly, if little or no change then the heated wire in the MAF is burned out and th sensor will have to be replaced, in that case, they sell rebuilt units at a very reasonable cost, try rockauto.com, best prices around period.
Posted on Oct 10, 2008
When you rest your codes there is a series of tests your ECU has to go through before you can pass emissions. this is done some people can reset the code and go before its sets the code again. on the 96 you can have 2 tests not complete for it to pass. basicly you have to drive the car a couple days for the tests to pass.
check the readiness tests wait until only 2 have not passed. then you should be good.so drive and check.
Posted on Feb 09, 2009
SOURCE: 2000 chevy venture doesnt start
Not the IAC, or MAF, or 02
Does the Van Crank over?
Have you checked the IGN Relays? 1,2,and 3?
How did the Battery test out?
Anything below 11.9v battery is dead.
So I suggest that you do not throw any more parts and check the battery again.
Posted on Jul 15, 2009
it is possibly the throttle position sensor(tps) malfunctioning. basically the computer or "brain" of the car thinks the throttle is in a different position than it really is and automatically makes adjustments to fuel, air ect.... based on these false readings from the sensor thus causing the engine to react a little different when you expect to have power.
Posted on May 14, 2011
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