Shift flare issue

**dhanna6powerstroke** · #1 (**permalink**) 11-22-2011, 10:25 AM

Got a friend with a 99 PSD and it has a shift flare when going into O/D. Shifts perfect in every other gear. He took it to a shop to have the trans. looked at for the issue and had the trans. rebuilt. Still did it when reinstalled. The guy that did the rebuild ended up having it out 4-5 times trying to fix the issue. Ended up putting a reman trans. in it and still has the problem. I told him to take it to a dealership and have the PCM updated just in case it was a software problem and still has the problem. Anyone out there had this issue and know of a fix? Thanks guys.

**dhanna6powerstroke** · #2 (**permalink**) 11-23-2011, 04:50 AM

Anyone??

**Dave** · #3 (**permalink**) 11-23-2011, 04:54 AM

Software or wire harness issue. Chip it see if it goes away.

**dhanna6powerstroke** · #4 (**permalink**) 11-23-2011, 05:02 AM

Quote:

Originally Posted by Dave

Software or wire harness issue. Chip it see if it goes away.

I was thinking software issue, that's why I suggested having it reflashed which didn't help. Never thought about a wiring issue and have no idea where to start. He's wanting to chip it but didn't want to mask the problem.

blue72 · #5 (**permalink**) 12-23-2011, 01:26 AM

What is a shift flare?

**dhanna6powerstroke** · #6 (**permalink**) 12-23-2011, 08:24 AM

Quote:

Originally Posted by blue72

What is a shift flare?

Feels like it shifts into neutral before going into the next gear. You will see your RPM's jump when it does it.

blue72 · #7 (**permalink**) 12-23-2011, 12:04 PM

Quote:

Originally Posted by dhanna6powerstroke

Feels like it shifts into neutral before going into the next gear. You will see your RPM's jump when it does it.

Thanks for the reply!

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