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Air Mass Meter and/or O2 Sensor ? ? ?
Posted by TomJ [Email] (more from TomJ) on Thu, 5 Jul 2001 11:38:04
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I've got a '91 9K auto(149,000) that idles wonderfully, but when it gets HOT it coughs, hesitates, and sputters.
->Changed the O2 Sensor - little better but no significant change.
Read other posts that say if throttle is floored and car doesn't sputter, then AMM is good, because sensors are bypassed when max-throttle. This car doesn't sputter under full throttle.
->If I disconnect O2 Sensor car idles rough, but runs much smoother - but not perfect.
Should I suspect AMM? (assuming no vacuum leaks) ???
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