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iac question??
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exploded99
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There actually are a couple of obd codes for iac problems, but they never get set.
Everyone I've seen with an iac problem has to diagnose it cause no check engine light is on. Some of the guys here that work on cars full time will probably have a little to add on the subject - thats my experience.
Everyone I've seen with an iac problem has to diagnose it cause no check engine light is on. Some of the guys here that work on cars full time will probably have a little to add on the subject - thats my experience.
spta97
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I got a code thrown on my 2000 V8 - not consistently though. It is a really easy fix on the V8 - 2 bolts and 10 minutes and you are done ($50 part online). I tried cleaning but that made it worse.
To trouble shoot, start the car and unplug the IAC terminal. This should cause the engine to sputter and stall. If it is still running the same as when you plugged it in the IAC is not doing it's job.
To trouble shoot, start the car and unplug the IAC terminal. This should cause the engine to sputter and stall. If it is still running the same as when you plugged it in the IAC is not doing it's job.
mosinman
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IAC and trouble codes.
My IAC failed and did not throw a code. I tried to clean the IAC and that seemed to work at first - but a week later I was stuck and a new IAC was the only cure. Never threw a code during the whole ordeal. As stated, there are codes that the IAC can set, but it seems all the ones I hear about that fail never set a code.
If it wasn't for this board I would have had no idea to suspect the IAC. I'm sure a shop would've charged me $200.00 for diagnostics -plus $120.00 to install the IAC I bought for $59.00 and installed in less than 5 minutes.
My IAC failed and did not throw a code. I tried to clean the IAC and that seemed to work at first - but a week later I was stuck and a new IAC was the only cure. Never threw a code during the whole ordeal. As stated, there are codes that the IAC can set, but it seems all the ones I hear about that fail never set a code.
If it wasn't for this board I would have had no idea to suspect the IAC. I'm sure a shop would've charged me $200.00 for diagnostics -plus $120.00 to install the IAC I bought for $59.00 and installed in less than 5 minutes.
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yes and no
it is possible for most sensors to go bad or not function properly without setting a code, especially valves that only tell the computer open or closed.
Only when they are unpluggesd from the wiring harness will they throw a code, the computer has no feedback on many sensors, it just knows if a circuit is complete.
it is possible for most sensors to go bad or not function properly without setting a code, especially valves that only tell the computer open or closed.
Only when they are unpluggesd from the wiring harness will they throw a code, the computer has no feedback on many sensors, it just knows if a circuit is complete.
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