Question about 1991 Isuzu Pickup

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I have a 1991 Isuzu pickup that will not idle. What can I do?

The only way my truck will idle is to keep my foot on the gas.

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YOU COULD HAVE A VACUUM LEAK AT INTAKE.ALSO SOUNDS LIKE IDLE SPEED CONTROL IS TOO LOW OR NOT WORKING.

Posted on Jul 21, 2009

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The first two things to check are vacuum leaks on the motor, and lines that have busted or off, also may be a leaking intake manifold gasket. Also, the idle control, it can go out from time to time. Hope that gives ya good starting point. A good way to check the manifold gasket is to spray along the gasket and see if changes the rpms.

Posted on Jul 21, 2009

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