Question about 1988 Buick LeSabre

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Dies at idle in gear

1988 buick lesabre t-type 3.8 with 39,000 miles,dies at low idle in gear intermittantly.

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Idle air control valve Check idle air control valve on throttle body. Mine had similer problems. A quick fix to get you going should be just unplug and remove spray w/ cleaner to get carbon off spring and cone shaft, reinstall. remember, this is just temporary. If cleaning helped, buy a new one soon. JMO

Posted on May 24, 2009

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95 buick lesabre quits running when put into gear


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It sounds as if you have a vacuum leak. It could be at the hose for the power brakes, pcv valve or the EGR Valve hose leaking. You may also have a bad fuel pressure regulator. Let me know if I can be of further assistance.
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