Runs poor after warm up...
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Senior User
Joined: Feb 2010
Posts: 443
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From: Bear, DE
Runs poor after warm up...
Posting for a friend.
He's got a '02 PSD with 121k on it. Thing is basically bone stock. It has a different muffler and a filter. That's it.
It's throwing NO codes or anything. It runs fine until after a few mins and it warms up, then it just starts misfiring badly.
He was thinking it's the fuel pump is dying. Could you guys shed any light onto this? He doesn't want to take it to the dealer if it's something he can fix.
-Mike
He's got a '02 PSD with 121k on it. Thing is basically bone stock. It has a different muffler and a filter. That's it.
It's throwing NO codes or anything. It runs fine until after a few mins and it warms up, then it just starts misfiring badly.
He was thinking it's the fuel pump is dying. Could you guys shed any light onto this? He doesn't want to take it to the dealer if it's something he can fix.
-Mike
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Well a failing fuel pump would explain no codes. Can you elaborate on the misfiring badly part? If the pump is indeed on it's way out it could cause this. Can you guys plumb in a PSI gauge on the fuel rail?
