Question about 1987 Chevrolet Chevette

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91 Taurus stauling problem

My 91 Taurus stalls only in the summer warm weather after it reaches normal operating temp then must sit approx 15 min or more depending on outside temp before it will start again. Additionally, it won't stall unless traveling at less than 50 mph. 3.8 ltr. V6

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Check your fuel pressure thru out the rpm. If irratic or drops hard then its the fuel pump.

Posted on Jan 18, 2009

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The first thing you need to do is run the system for fault codes, any Autozone will do this for free, ask for a OBD2 fault code test. If no codes show check the fuel pressure next time this start problem occurs.

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F 150 2004 stauls during the winter-summer months no stauling


The stalling, if you are talking about when the engine is cold, is due to a failure of the "Cold start routine". Should this be the case, the defect is due to a temperature sensor failing to send a signal or the PCM failing to use the signal.

Now if this stalling is when the engine is warm in cold weather, it can be due to the ISC(idle speed control) solenoid. One reason the stalling is reduced in the Summer months is the A/C has an idle speed step-up which works when the A/C is used.

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