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Truck running too lean

thebumperman

New Member
Joined
June 16, 2015
Messages
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City, State
Saugus, CA
Year, Model & Trim Level
2001 Sport trac 4.02WD
I just replaced the intake manifold gasket, I check all the vacuum lines, I put smoke on the engine. There are no leaks. But still I get the forsaken engine light
I took the truck to a smog shop and the guy could figure it out. The truck is a 2001 4.0 w/ 96k miles. Has any one of you have gone thru this situation ?
I ck the O2 sensors and they are ok. The smog guy suggested that it could be a faulty ECU, but I really do not know. Any help would be appreciated.
Thanks
 






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