HomeWhat might cause a 6-cyl 1986 Chevy Astro van to backfire?
It can be eithier plug wires crossed or burned valves. Have it checked out.
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It might be on the firewall under the hood on the left side.BEst of luck....I to am haveing trouble with astro van.
CHECK your tioming - might have jumped a tooth - check control module or coil might be the problem
You might have a blown headgasket on top
A rototiller may backfire when it is starting because the valves need to be adjusted. Another reason that it might backfire is because you have to replace the spark plug.
A motorcycle jerk or backfire can come from the choke not shutting off completely, the fuel jets might be clogged, a gasket or seal may be broken. Valves that are out of adjustment could also be the problem.
It might be overfueled but it also might be just that when you turn the key off the motor runs on a bit and puts fuel into the hot exhaust and it ignites it and makes it backfire.
might be the thermostat stuck shut The radiator and cooling system could be low on coolant
Go to Auto Zone and have the computer codes read for free.
There are a couple of things that might cause a Chevy Tahoe to lurch forward after releasing the brake. One reason could be that the idle is high. The drive shaft may have to be greased.
Plug might be cracked .And might be arching
it probley needs a new battery or a new gas pedal. Another reason is the car might be to old
Check your timming. It might be advanced too far
The lights on the odometer on a 1999 Chevy Blazer might not work because of a burned out fuse. They might also not work if the lights are burned out.
If the vehicle will stall and will not restart or appears to be out of fuel but the fuel gauge reads above empty, replace the fuel sensor assembly and auxiliary tank fuel level sensor if equipped. if not, replace the instrument cluster.
It might be that you did not tighten the gas cap enough.
There are eAuto repair manuals located in the link below. Not free, but cheaper than paper-printed auto manuals. This might help you.
it would go slower and it might jerk
I don't know excatly, But Iam pretty sure that Chevy put's the "Icm" in the distributor or on the coil pack. Your vehical however might not have a ignition module the "Power train control module"(pcm) in some vehical's control's spark timing.
Hesitation can be caused by several things: 1. A faulty throttle position sensor might cause hesitation. 2. A faulty MAP or MAF sensor might also cause hesitation. 3. A problem with the engine control module might cause hesitation.
I think if you went to your local Chevy dealership they might know I think if you went to your local Chevy dealership they might know I think if you went to your local Chevy dealership they might know I think if you went to your local Chevy dealership they might know
A bad TPS might cause the engine to not fire up during cranking. But not crank? Nope.
altanator might be on its way out
A bad idle air control sensor or a bad throttle position sensor.
It could be a number of things, you need to have the computer scanned to find out what is wrong.
if your talking about head lights? you might want to make sure your parking break is off. if you talking about your dome lights you need to check for dome light over ride then might check fuses. it is poss that you took some sort of surge and blew bulbs
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