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2.3 runs rough til warm


PL1993

Active Member
Joined
Nov 11, 2007
Messages
28
Vehicle Year
1993
Transmission
Manual
I've got a 1992 2.3 with an auto. Start it up it seems to idle fine, take it out and it's not noticable in first gear but when it shifts to second it seems to fall on its face. No power at all and you can feel it missing. The CEL is on, I'm not sure if it's on as soon as you start it up or not. But when it's on it runs this way, soon as it warms up, feels like you fliped a switch,the CEL goes off and the truck runs perfect. Put a scanner on it and it didn't find any codes. Anybody else have this problem before? I'm thinking o2 sensor or coolant sensor? Please help, Thanks.
 

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