After the car runs for a little bit (about 15 minutes) when coming to a stop, the cars idle goes so low that it almost dies, then actually will, the warmer the car gets. Is this an Idle Control Valve problem...ECU...
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Hi Lasbs, Check the ignition timing and adjust with a stroboscopic timing light. The correct timing should be 10 degrees BTDC. If the vehicle is fitted with a carburetor, I believe it needs adjusting correctly, or with the Honda carb, it may be easier to replace it. If the vehicle is fuel injection carry out a diagnostic scan. Also make sure that all vacuum tubes are fitted tightly and that there are no cracks or broken joints. Regards John
sounds real easy either a bad idle air control solenoid or more likley a blown throttle body gasket. to test fro a blown gasket, with engine running and cool spray carb cleaner or brake cleaner around base of tb were it bolts to intake. when it hits the bad area, should idle down and be normal for a second or 2. iac is possible,try this first since its so common and let me know
I had the same problem on a Rover. There was a leak in inlet manifold that was caussing the problem.
To verify, spray some sealant to temporarily seal the inlet manifold .and the eratic idling should disappear for some time.
If it does, you know there is leak in inlet manifold which you can take of and refit with a new gasket.
This problem is a little bit hard to coz you need to check the following throttle body, fast idle valve & the IACV valve. First the throttle body it must fully closed during idle and the TP sensor voltage must be 0.5 volt. The fast idle valve is wax type there is a 2 small hose pass below of this valve, if the coolant water is not circulating the valve will not closed. You can check it by touching the lower portion of this valve after 1 min. Regarding the IACV you can check if this is the fault by removing the hose connecting the throttle body and air filter. there is 2 small hole near the opening of the throttle body, while the engine is running at idle close one by one and see which one cause this problem.I hope this will give help to your problem.