1993 pcm 4.0

[DaveC]

I’ve got a 93 ranger 4.0 5 speed. The pcm will not boot up. I’ve changed the capacitors already but still same issue. Acts like it’s in the voltage regulator circuit. I tried another pcm and it will run fine. That eliminates any issue with voltage supply to the pcm. Anyone familiar with board repair in these units. Seems the board schematic is proprietary to ford and I can’t find it. Also I’m still looking for another pcm for this. The one I tried had issues and I sent it back to eBay. That caps were corroded in it as well. I have a 4.0/2wd/manual. If I use an auto pcm I’m sure it would still run but with a cel. I know the 2wd/4wd don’t matter. Thanks

 

[SenorNoob]

Welcome to TRS! Post up a pic of your ride.

Are you familiar with car-part.com?

Toledo Core Supply USA-OH (Toledo) Request_Quote 419-244-5555 / 800-546-267

Claims to have 4 depending on what code you need.

It looks like only California emissions is available rebuilt. Blue Streak does offer a service though.

"Rebuild and Return. Call Blue Streak at 1-888-826-2719 or 1-877-916-8324 option 1 before ordering. NOTE: All units will be inspected to verify the ability for Rebuild and Return - findings will be promptly communicated to the store. ^, Rebuild and return"

 

[DaveC]

I checked on the auction website, there are some rebuilders but they won’t touch it since I put new caps in it. I didn’t see any on car-parts. I’ll take a look again.