How to verify a bad PCM
#1
How to verify a bad PCM
My CEL came on recently and it had 18 codes stored basically a bunch of sensors didn't report, and one code 513 is replace PCM. I would like to do what I can to verify it's bad before replacing it, as I cannot afford to throw parts at it.
My truck is a '94 F350 5.8L E4OD 4X4.
Anyone got a spare PCM I could borrow?
My truck is a '94 F350 5.8L E4OD 4X4.
Anyone got a spare PCM I could borrow?
#4
Originally Posted by T30
it runs rough. The fuel pumps run for a secone then shut off
Run a self-test and see if it checks out OK with the codes.
If it passes the codes and the 5V I would say it is a good one.
Make sure you run all of the code tests and the timing test.
You do not need anything special to do these tests, just a paper clip and a meter.
If you do not know how to do the tests go to one of these sites links.
This is good for the KOEO test:
http://fordfuelinjection.com/?p=13
This one is good for the KOER test:
http://www.broncodata.com/tech/codes.htm
Last edited by subford; 02-26-2008 at 07:50 PM.