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Old 04-03-2013, 11:37 AM
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Throttle sticking & whistle noise

Hey guys & girls im having an issue with 2000 tj 4cyl when i hit the gas pedal rpms go up normal but they cone down & pause then drop back to normal, and also when it is cold outside and im driving there is a whistle noise after i have the throttle open for a while it briefly stops when i hit the gas then comes back once jeep returns to idle. I have changed tps & iac & cleaned throttle body. I found missing bolt in my exhaust manifold during seafoam could this cause my issue? The jeep runs great on warm days but on cold days its choppy when i get to those highway speeds any help is welcomed
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