New ECM? How do I know? Which one?
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Junior User
Joined: Jun 2003
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From: So Cal Coast
New ECM? How do I know? Which one?
How do I know if I should replace my ECM?
Also, are ECMs VIN specific? or do all F150s from a particular year or years share a common ECM?
Are aftermarket computers/chips advisable?
I've gone thru just about everything else on my '92 302 efi w/ AOD... - ... I'm ready to do it!
Any suggestions on suppliers??
I like my truck & it would be nice if it would only run like I know it should!
Also, are ECMs VIN specific? or do all F150s from a particular year or years share a common ECM?
Are aftermarket computers/chips advisable?
I've gone thru just about everything else on my '92 302 efi w/ AOD... - ... I'm ready to do it!
Any suggestions on suppliers??
I like my truck & it would be nice if it would only run like I know it should!
Junior User
Joined: Nov 2005
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What problems are you having? I am having a huge problem with my 1996 F-150 302cid. The ignition keeps throwing codes and I have checked and replaced most major components. I have checked and traced wires throughout the engine compartment. I found that the PCM/ECM costs only about $50 from Ford itself for a 302cid. Thank Ford for the common use of this engine. A quick and fairly inexpensive change. It would probably cost you more to have Ford check the ECM themselves.
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Junior User
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From: So Cal Coast
I've also changed or tested every sensor I've come across, plus new injectors, plugs, wires, cap, rotor........ et al....
The main problem is I'm running rich - very rich....
see thread: https://www.ford-trucks.com/forums/s...d.php?t=432423
Where do you find the $50.00 price?? Best price I can find on a rebuilt is about $200.00. New about $300. But, if it solves my problems I'd be glad to spend the cash. I'd feel better if I had some kind of reassurance before I do this though.
The main problem is I'm running rich - very rich....
see thread: https://www.ford-trucks.com/forums/s...d.php?t=432423
Where do you find the $50.00 price?? Best price I can find on a rebuilt is about $200.00. New about $300. But, if it solves my problems I'd be glad to spend the cash. I'd feel better if I had some kind of reassurance before I do this though.
Posting Guru
Joined: Jun 2004
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From: Central NY
I wouldn't replace the FPR unless you saw gas at the vacuum port, those figures are good. I read your other thread btw. The ECU should be replaced with one with the same code found on your ecm: http://fordfuelinjection.com/?p=17
I would try removing the EEC big connector and cleaning the contacts and if that doesn't resolve the problem I would try the 'puter' too, since you've seemed to go thru everything else already.
I would try removing the EEC big connector and cleaning the contacts and if that doesn't resolve the problem I would try the 'puter' too, since you've seemed to go thru everything else already.
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I found the PCM/ECM price on the internet at Ford's website. Ford.com. Mine listed for $48.97 and retail with discount was $38 and some change. But I would definitely check the connector and clean it before replacing the ECM. Have you checked your EGR valve? That can play a role in fuel mixture.
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