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View single post by JAMMAN
 Posted: Tue Dec 6th, 2022 07:06 am
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JAMMAN
Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City, Ohio USA
Posts: 6470
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 Fixing the 1451 won't cure the symptom, you can live with 1451 for the rest of your life. It's annoying but the evap will not change the way the truck runs. Leave it for after several happy drives with a 5.0!

How did this engine run before it was pulled from the mounty?
Were there any similar issues with the 4.0 in the 03 before you yanked it?

I would take a fuel pressure reading with a gauge, monitor it when you start and rev it up. If that turns out 60/70 PSI across what little throttle you have then you need to look at extreme vacuum leaks/timing issues (did you pull the cam synch out) which would normally throw a heavy code but you did have it flashed.

Do you have enough an exhaust on it to hear a bad vacuum leak?



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00 XLT 4WD RCSB 3.GO! Jalapeño
01 XLT 2WD RC Steppie 3.0 auto Silver
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