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09-23-2003, 07:17 AM | #1 |
Registered Member
Join Date: Jan 2000
Location: Mount Joy, PA , U.S.
Posts: 198
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89GT missing at low rpm
Hi
I just got an 89 GT and it will hesitate and buck back and forth at lower rpms below 2grand. THe car also revs up and down at idle speed untill it really gets hot then it settles down. What might this be Thanks |
09-23-2003, 09:35 AM | #2 |
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Join Date: May 2001
Location: Fernandina Beach, FL 32034
Posts: 178
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Oh boy, could be a bunch of different things, First thing to do is check codes. Also make sure of no vacuum leaks (You can spray carb cleaner around intake and vacuum hose and if rpm raises you found one) Once youve found out codes (Or even if none) post back and might be able to give a little more definate answer.
Bill
__________________
Bill Heiser 90 Convertable 5.0 LX, ported E7s w/ THumper valve job, TFS street, FR 65mm TB, B cam w/1.7 cobra rockers, kirban AFPR, Mac CAI, Mac Headers, off road h, 3 chamber flows, Crane ign. box, 3:73s, Art Carr AOD & 2600 converter |
09-24-2003, 01:05 PM | #3 |
Registered Member
Join Date: Jan 2000
Location: Mount Joy, PA , U.S.
Posts: 198
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I just wanted to add that the car runs better when it is all warmed up.
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09-25-2003, 06:51 PM | #4 |
Registered Member
Join Date: May 2001
Location: Fernandina Beach, FL 32034
Posts: 178
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I'm going to say check coolant sensor and air temp sensor, could also be MAF. You can get code checker at Auto Zone, DAP, even Sears for cheap. Let us know what codes you have.
__________________
Bill Heiser 90 Convertable 5.0 LX, ported E7s w/ THumper valve job, TFS street, FR 65mm TB, B cam w/1.7 cobra rockers, kirban AFPR, Mac CAI, Mac Headers, off road h, 3 chamber flows, Crane ign. box, 3:73s, Art Carr AOD & 2600 converter |
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