This is How it happens.
1. Fuel injector bad, change the Fuel injector.
2. Map senor bad, Change new map senor.
3. Air idle problem, Change Air idle sensor.
4. Regulator bad, no pressure, Change the Fuel injector/regulator set again.
5. Everything looks fine.
6. Engine Run on idle for 10 mins till engine is hot, Check Engine light is on again. Computer Shows that it is the Air idle problem again.
7. Change fuel line and Fuel pump.
Is this because I did not clean the Air Throttle Body or the Air idle sensor is bad again, or something else.
Computer said ok to drive, and it is ok to drive, but if i let the vehicle idle for 20 seconds, the check engine light will come on again with the same message.
Can someone Help !!!!!Chevy Astro Van Check Engine Light On - Air Idler Problem ???
Dear Astro Van-
Well it looks like you had your work cut out for you.
There is one detail that I really needed to know, and that was which 4.3L was in this Astro. The 8th VIN Digit will either be a %26quot;Z%26quot; or a %26quot;W%26quot; which indicates a Vortec 4.3L or the TBI Engine.
OK Here we go.
On the vans that are equipped with the %26quot;Z%26quot; motor they use a fuel injector setup that was a good idea, just poor execution.
The injector system used a Timed Fuel Distributor with these black soda straws that went out to each cylinder within the intake manifold. Depending on the type, (Generation 1 or Generation 2) you would either be required to replace the entire fuel distrubutor system, or you could replace the individual injector that wad bad.
These vans were also equipped with a TBI, (Throttle Body Injector). This looks like a modified Carbuetor with two large fuel injectors placed over a two barrel throttle plate and venturi body. If this is your system, then you need to check the base gasket on this TBI Unit. The base gaskets were notorious for becoming brittle and cracked . If you remove the air cleaner and open the throttle plates you may see a chunk of black hanging out down below the throttle plates. If you see this, this is the base gasket and it cracked and needs to be replaced.
The Idle Air Control Solenoids were also an issue on these vans. This is a round part that will have a plug on it normally near the base of the TBI Unit. This will just require a quick replacement.
The last thing that it might be on this van is the electronically controlled EGR Valve. This valve used to cause this van some trouble from time to time, and I know there was a warranty campaign on these parts. the valve will need to be replaced if this is the case.
My advice to you is to take the van to your local Chevrolet Dealership and let them have a look at it. If there are any warranty campaigns that need to be done to the vehicle, they may be covered under warranty with little or no charge to you. But the Chevrolet Dealership will have to make that determination.
Keep in mind that, yes you are paying a little more at the dealerships, but they are also working on that product all of the time and have the most up to date service information available to them.
I work in a Chevrolet Dealership. Most of the time when customers come in with trouble with their Chevrolet Products, they have taken them to a private shop for issues such as the ones that you are experiencing. Normally when these vehicles leave the Dealership, they are not having problems anymore. Also Chevrolet backs up all of the work their technicians perform with a 12 month or 12,000 mile warranty on the work and the parts.
It may cost you a few buck more, but I own two Chevrolet's and the piece of mind is worth the extra money I pay.
I hope I helped you out! Good Luck!Chevy Astro Van Check Engine Light On - Air Idler Problem ???
Since you stated this is a %26quot;W%26quot; engine, my guess is that it will be the base gasket on the TBI Unit, which will mean removal of this unit to replace the gasket. If this does nit solve the problem, then you have an ECM Issue, and only the dealer can repair it.
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Chevy Astro Van Check Engine Light On - Air Idler Problem ???the idle air control code does not mean the sensor is bad for sure.
you need to test the wireing harness.
and a sludged up throttle body could also cause this code
when you replaced it the first time was the passage clean?
if the throttle body is clean you need to test the wire harness
for 5 volt reverence and return signals from the sensor.
Paul
founder http://www.abmatch.com Free Online Dating Site
