Newbie,

by **Shane_90** » Tue Apr 11, 2023 6:47 pm

antus wrote:11P - make sure you have the PCM jumper set, that is a hardware setting required for the '424 PCM.

Yep I left that jumper alone. Just got home from a decent drive no issues, figured I would connect the read/write jumper and now it appears to be in limp mode as the fan starts up and the car wont start. Disconnect the read/write jumper car runs fine again

by **antus** » Tue Apr 11, 2023 7:13 pm

Certainly strange. Check for a short or wiring problem on the RW wire on the PCM. Check that its not shorting to the case when the PCM is in the metal case.

by **Shane_90** » Tue Apr 11, 2023 7:39 pm

I was cautious of this when I added the wire on the back and have used some insulating tape on the case to protect that area as a precaution. Iv reseated everything all the jumpers, memcal etc. Its now starting fine with jumper connected on the RW header and blue light on. Maybe it was just a bad connection somehow. I haven't tried to make any changes or connected the laptop yet, I'm trying to be kind to the neighbors.

Really appreciate the help Antus,

Newbie,

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