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Oldsmobile Custom Cruiser Forum:why does my car have rough accel. rough at constant speed but runs well when applying more throtle

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why does my car have rough accel. rough at constant speed but runs well when applying more throtle
By: bigtom - Jan 04, 2008 at 03:31 PM
About: 1991 Oldsmobile Custom Cruiser

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littlehorn replied to bigtom
Jan 04, 2008 at 06:33 PM

Sounds to me like either a mass airflow sensor or throttle position sensor.  It's having trouble telling the ECM the "position" of the throttle or the amount of air flowing through the throttle body at idle, so it's hunting, and has a rough idle.  You may also need a tune-up.

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casper271
casper271 replied to bigtom
Jan 04, 2008 at 07:59 PM

What engine do you have?

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papa
papa replied to bigtom
Jan 05, 2008 at 01:24 AM

agreed with littlehorn

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