Question about Toyota Camry

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I bought this car and it seemed to run ok. I had to replace the oil pump seal , so I changed the timming belt. The timing belt seems to be 1/2 tooth off. I have checked it and rechecked it. Also I discovered the ISC was unpluged. I pluged it in and the car idles around 2000 rpm, and the idle speed goes up and down. With the ISC unpluged, it was throwing a ISC code, but with it pluged in ,it is only throwing a tps code I thought the Isc motor and valve were bad, but would a bad TPS cause it to idle very fast and vary. The thing that confusing me is with the ISC unpluged when I got it, it was idleing ok. Also, if the timing belt was off 1 tooth, would that make it idle fast?

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Hi the IISC the TPS can both cause erratic and fast idling, also air leaks, the Volume Air Flow sensor to name a couple of other causes, as the code points to the TPS i would be inclined to trust the code, i would want to get the timing right but that in itself wouldn't cause the problem you are having, poor performance would be,

Posted on Mar 16, 2010

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