Question about 1992 Toyota Paseo

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When the weather is cold, while driving normally, the RPM will just automatically goes up but when the weather is warm, the car has no problem. is there a thermostat or temperature gauge in the car?

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Sounds like a faulty temp sensor,giving a false signal to the cold start fuel injector. Normally at start up this will be obvious in a higher tickover rpm than when in warm weather. If it is doing it when driving along then you temp sensor could well be faulty, or possibly the injector itself,a bit like a carburettor choke on an old car.

Posted on Jan 02, 2011

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