Chris Maddox

No worries...I have a tendancy to read too fast myself. I used Arctic silver alumina thermal adhesive for the heatsink. I have been building computers and working on xbox's to know better than to forget that important step LOL. I'm just glad I found your post because my MOFSET chip was not burned and everything on the board looked like new. I figured 3.59 was worth a chance. Great post btw and good job with the pics.

pole71

I just joined this forum to say thank you to khsonic03.

This thread is a real find!

I have the old chip removed and the new one ordered.

I'll post back with the results.

pole71

It worked like a charm!

Thanks, again, khsonic03!

khsonic03

Awesome news. I can say that even if it only helped 2 people, it was worth the time to post. When your truck gets as old as ours, it only makes sense to be frugal with repairs.

Chris Maddox

I have a feeling that there will be more people in the future looking for this thread when they experience this same problem; and everyone has you to thank for it khsonic! I think we owe you a drink considering the amount of money that was saved.

udderbrudder

Excellent post. Thanks for the post.

unknown

Registered just to post this.. first off my gratitude to khsonic03 for taking the time finding a solution and sharing it with everyone. i have a 2000 navigator and experienced the dreaded abs pump constant running. stumbled upon khsonic03's thread and followed his direction... replaced the mosfet and solved my problem! i was so impatient to find out if this worked, that i actually reinstalled the module without the heatsink (store ran out of adhesive) and ran the truck for a week! lol thanks again man!

dgable1

I just registered to comment on this thread, cause my ABS light came on this morning on the way to work and the pumps been running ever since. I disconnected the battery to get it to stop. I have one question. Has anyone determined that a failed MOSFET is the only reason that the ABS system acts this way? Are there any other reasons that would cause the pump to run constantly? Thanks, I was just curious before I started tearing the truck apart this weekend.

Chris Maddox

This seems to be an issue with the F-150. Basically the MOSFET chip goes bad causing a short and the pump will keep running even after the key is out. I would say this more than likely the problem. I did a lot of research pertaining to this problem before I began tearing apart my truck. After all my troubleshooting I narrowed the problem down to the control module. If you know the control module is the problem (and it sounds like it is) then you have three choices: buy a new control module for probably around 800 dollars from ford; buy a used control module for around 250 and hope it dosent go bad in the near future; or spend a few dollars and attempt to replace the MOSFET chip yourself. If you need any advice or have more questions let me know.

dgable1

Ok that sounds credible enough to me. I have quite a bit of soldering and MOSFET experience from my job as a repair tech so Im not worried about the electronics part of the job. I guess Ill go out and start tearing the truck apart. Thanks a bunch. Ill keep you guys updated as to how it goes.