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Fuel and Engines

Why would the engine idle then die?

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2011-09-13 17:23:16
2011-09-13 17:23:16

Hi Dave,

I have a 1989 Ford F150, 8 cyl. I had a similar problem where I would start my truck and it would die almost immediately. Anyway, I also replaced several things, but the thing that did it was the fuel pressure regulator. You don't say what type of car or truck you have. But it doesn't sound like it is like mine exactly. You could have gotten a bad fuel pump. How long since you had a tune up? How about spark plug wires, rotor? It could be misfiring.

AnswerCarburator? Get a new car! AnswerMy friend had the same problem. He had to replace an air sensor. Or maybe you need some carb tuning. AnswerMy dad was having the same problem with our 95 Chevy Corsica. I'm about 99% sure it was a bad spark plug. Just as a thought.

My 87 Thunderbird had the same problem. I tried adjusting the idle, didnt help. I ended up replacing the idle speed actuator on it. Which is a sensor, located right behind the idle control bolt. This fixed my problem. If you are still having the problem, maybe consider the sensor.

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Yes, it can cause low/unstable idle or die off at idle.

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No, an engine idle RPM being not zero is not a problem. If the idle were zero, the engine would not be running!

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A picture of an idle??? Idle is a state of operation not an actual part. As in, the engine is idling at 750 rpms. A picture of an engine at idle would look almost exactly like a picture of an engine that is running at 3000 RPM or shut off.

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ABS brakes should have no effect on engine idle, but a bad power brake vacuum booster would have an effect on engine idle.


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