20 Most Recent
1992 GMC G2500 Questions & Answers
1992 gmc vandura g3500 ecm location
In most gmc/chevy trucks/ vans it is located behind the gove compartment, just remove the glove box and you will see it on top of your heater box.
Vandura
I would find the trany tube first which will be smaller in diameter than the oil one. then go to the dealer if the cap for the tube with no cap has the dipstick on it all in one and make sure the dipstick isn't already down the tube if it is supossed to be attatched to the cap.
Vacuum leak
if vacuume leaks out the control valve replace the control switch
Where is the oxygen sensor located on a 92 gmc
Your oxygen sensor is located between your exhaust manifold and the cad. It is a little sensor that screws into the exhaust pipe itself. There will be a wire on it which plugs into a small clip. When you see it you will know it. It is the only thing that screws right into the exhaust. I hope this helps you out.
1992 gmc g2500-no fire to injectors--ckd pink wire
The signal that the computer uses to fire the injectors actually comes from the ignition module inside of the distributor.
Some applications also use the oil pressure sending unit to shut down the fuel pump and injectors if there is not enough oil pressure to run the engine safely.
There might also be a burnt fusible link at the starter that controls part of the power to the computer, you will know a burnt fusible link wire when you find one because it will stretch like a rubber band.
Be sure that all of the ground wires are tight, especially the computer ground wires at the back of the cylinder heads, and the computer ground wire that should be grounded next to the thermostat housing.
My 92 GMC 5.7L truck failed Wa State idle emission
I would go to the pharmacy and buy a half gallon of 75% or better isoprople alcohal the run the vehicle to almost empty,then add the alcohal and put just a few gallons of high test in it then drive to your testing station and get tested again after engine is warm.Afterwords go and fill it with more gas.Remember the more alcohal the betterbut no more than a gallon the the mix.It worked for me in ct with a 79 muscle car malibu and my numbers were of the charts.
I have a 1992 gmc vandura 5.7 L v8 im having a
If it is backfiring through the carb (no fuel injection? Has to be) It shows that one or more cylinders are firing when an intake valve is still open. That can happen if the distributor cap has any "tracking" inside that is allowing spark to jump to the wrong wire terminal, the rotor is bad, (same thing) or if an ignition wire is worn cracked etc and is allowing spark to jump to another wire before it reaches the plugs.
That condition can also be caused by a bad timing chain (throwing off the phasing between crank and cam) or a burned intake valve.(no longer sealing) Sensors such as the throttle position sensor and map sensor allow the computer to adjust the timing as you drive if either have failed, it can cause similar problems but usually won't cause a no start condition. A worn camshaft lobe can also cause a backfire at times. Just about everything you listed seems to point to a bad timing chain. Without testing this will all remain a "mystery". For around $20 you can get a haynes or chilton manual for your vehicle and then you can do tests using a digital volt/ohmmeter. A simple test of the timing chain is to remove the cap from the distributor and without removing the wires, hold it out of the way and crank the engine over. If the rotor "stutters" when cranking or does not turn at all, the chain has failed. Also check tdc by turning the crankshaft till it points to 0 on the timing scale. the rotor should point to the #1 post of the cap, or 180 degrees away from it (one more complete turn of the crank should bring it to #1). When a chain is worn and about to fail, it will reduce engine power and also cause low vacuum and stalling.
Your fuel pump should run most of the time when the engine is running. When it reaches the proper pressure the regulator will normally shut it down or at least the sound from the pump should lessen....that maybe another problem entirely unless the plugs are getting soaked with fuel. I would work on finding the cause of the backfiring first as everything else may "normalize" after that is corrected.
good luck
Van wont start
Sound like your catilitic converter is plugged and needs replaced,mas air flow senser also ,but I think its your converter
When you put timing on 4 degrees as the label on
The correct timing would be what the sticker says. However, if there is considerable mileage on the timing chain then your timing would be off even when set with a timing light because the chain will stretch with usage. The more miles on the engine, the more stretch in the chain. To myknowledge there is no formula to determine how much extra advance to use to compensate for that stretch. Advance your timing a couple of degrees at a time until you can find a satisfactory amount of power and still have the engine start easily. If it starts to turn over hard,especially when hot you have gone too far, back your timing off a little. Or you could replace the timing chain and gears as a set. Hopethis helps.
Not finding what you are looking for?