I have a '94 Camry with approximately 59K orig. miles. It stalls on occasion when coming to a stop- the engine revs - and the 'tack' needle goes below 1K and fluctuates up and down - until it eventually stalls. This happens even after a long trip - when coming to a stop to pay the toll or make a turn. It has had new plugs, wiring, everything - just can't shake this problem.
try a short spray of TriFlow at the rectangular hole (air inlet to IAC valve) at the (inside) bottom of the throttle body. the idle air control valve regulates idle speed (controlled by the computer) if that valve were sticking could account for idle speed not responding correctly TPS (throttle position sensor) could be questionable also. (tells the ECU computer when throttle is closed at idle) check for smooth progressively increasing resistance with ohm meter there is also a setting measured across the IDL contacts at the TPS while holding thin thickness guage in position to calibrate the point at which idle engages. these setting are in the factory service manual under the heading of throttle body removal
"MoiraY" wrote in news: snipped-for-privacy@localhost.talkaboutautos.com:
These are the classic symptoms of a bad EGR valve. (Exhaust-Gas regulating valve -about $325).
Sounds like the idle control air valve is not doing its job. Try removing and cleaning it. Do a web search on how to complete this very common job.
You may be able to do an adequate job by spraying into the throttle body ports (on the bottom on both sides of the throttle plate) of the IAC valve.
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