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My 4.9 has been having erratic problems with idle and seems to be running rich. No codes, checked pretty much every sensor with a multimeter and replaced the ones out of spec. I pulled the ppm today and saw this. For the life of me I can not find the correct model and was hoping someone could help. The calibration code I have is 7-52m-R02. The only number on the ppm itself I can find is E6DB-14A624-HA and side the connector has E4AB-14A297-AB BUU CANT SEEM TO FIND ANYTHING ONLINE. If someone has a idea please let me know!
1989 4.9 with c6 transmission 115K miles, runs great once you're on the gas with no stumble or hesitation but at idle it stumbles horribly. Calibration code is 7-52M-R02 and to the right of that says E8AE-6E061-ACH
hoping our gurus, can tell you, is your truck 150, 250, 350, and is it a original Cali truck or you moved there, it will matter on your ECM replacement
E6db-... is the pcm part#. Go to oriellys. Just bought one for a '95. The capacitor looks fried. Same on the one I replaced.
Side note: egr system and idle control solenoid could also be causing your problem. Lucky those pcms only cost about $45 now.
Last edited by NoFx8791; Mar 9, 2020 at 08:37 PM.
Reason: Adding more thought.
ENGINEERING NO. is the number on the part.
SERVICE NO. is the Ford part number and is not found on the part as Ford has never put the part number on a part aft ~1955.
ENGINEERING NO. is the number on the part.
SERVICE NO. is the Ford part number and is not found on the part as Ford has never put the part number on a part aft ~1955.
It might be worth your time to take it to an electronics repair service - the board may not be in as bad a shape as it appears.
When I found leaking caps on the PCM of my 1991 F150, I had them replaced at an electronic shop (not some place like Best Buy - I literally googled “electronics repair” in my area and called/emailed about a dozen places before I found one) for about $60.
They didn’t have the programs necessary to verify its functionality after the repair but it didn’t take long driving it to discover it was running like it should be (I can’t recall the original problem I was diagnosing).
At the very least you could get an opinion as to whether the repair is possible (in terms of it being functional again).
