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1989 f250 eec

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Old Nov 15, 2007 | 07:35 AM
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Question 1989 f250 eec

swapped motors (351w) and now cant get the new one to start. fuel injection is not working. checked everything i can think of. question the motor was out of a truck with standard tranny. mine is an auto. would that cause any problems with the computer? thanks
 
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Old Nov 15, 2007 | 07:53 AM
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Originally Posted by hotshot414c
swapped motors (351w) and now cant get the new one to start. fuel injection is not working. checked everything i can think of. question the motor was out of a truck with standard tranny. mine is an auto. would that cause any problems with the computer? thanks
Did you get the computer from the truck you got the engine from?

Computers are vehicle, year and equipment specific. Change the engine without changing the computer, or even swapping parts around...the vehicle may not run correctly, it may not run at all. It all has to do with the Calibration Code. There are over 300 different CC's from just the 1980's F Series trucks...and you'll have to find one that matches the application, unless someone has come out with something aftermarket that I'm not aware of.
 

Last edited by NumberDummy; Nov 15, 2007 at 08:07 AM.
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Old Nov 15, 2007 | 08:08 AM
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the donor vehicle did not have a computrer in it. but the truck was identicle except for having a standard tranny.
 
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Old Nov 15, 2007 | 08:17 AM
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Originally Posted by NumberDummy
Did you get the computer from the truck you got the engine from? Even if you did, the computers are vehicle specific, and can't be swapped from one vehicle to another.
Within the same engine configuration the EEC4 computers can be interchanged between vehicles. A V8 computer from an mustang will operate a V8 in a truck for example, as long as the engine harness matches the computer pinout. Swapping computers between speed density batch fired trucks is a simple plug and play operation..

To the OP.. you'll have to give us more information. What have you changed, what did you check?
 
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Old Nov 15, 2007 | 08:18 AM
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Originally Posted by hotshot414c
the donor vehicle did not have a computrer in it. but the truck was identicle except for having a standard tranny.
Identical? Did all the smog equipment match? Same identical electronics? See where I'm going with this...you just can't do what you did without changing the computer. I had customers 20 years ago standing at parts counters cryin' the blues, because they thought everything was identical, except the____. Now they had to spend big bucks to fix the damn thing run correctly. There was this guy with a 1983 Cougar...he swapped engines....I don't even wanna think about it. It was a nightmare trying to figure out what would work.

Conanski = that may be true for some vehicles, but not all. Plus, I'm in CA, where things can be radically different than what the 49 state vehicles used inre to computers and CC's. Bottom line, this is a good example of planned obsolesence.
 

Last edited by NumberDummy; Nov 15, 2007 at 08:28 AM.
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Old Nov 15, 2007 | 08:36 AM
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everything on the engine was there and just plugged in . the problem i have is ive got no pulse to the injectors. i've changed distributor twice to check the pip and module. ive ran down all the grounds to the computer and ive checked every wire that i can find. cant find anything wrong. the only thing out of the ordinary about this engine change was when i went to start the motor the battery was dead. this a good battery and should not have lost its charge. i had the positive disconnected. im thinkink possilbly i could have grounded the battery to the chasis. causing a surge back to the computer. i dont know if thats even possible though.
 
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Old Nov 15, 2007 | 08:49 AM
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Originally Posted by hotshot414c
everything on the engine was there and just plugged in . the problem i have is ive got no pulse to the injectors.
hmm...This reminds me of some of the early 1991 Explorers that wouldn't fire because the wrong starter was installed at the factory. What did the starters have to do with it? Pulses from the starters were causing the 'puters to turn off the injectors. The starters installed were for export vehicles, and didn't have a shield installed that would have prevented that from happening.
 

Last edited by NumberDummy; Nov 15, 2007 at 08:52 AM.
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Old Nov 15, 2007 | 09:48 AM
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Originally Posted by hotshot414c
everything on the engine was there and just plugged in . the problem i have is ive got no pulse to the injectors. i've changed distributor twice to check the pip and module.
Do you have fuel and fuel pressure?
Do you have spark?
Check the key on - engine off codes and report back. See www.fordfuelinjection.com to see how to run a diagnostics self test.
 
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Old Nov 15, 2007 | 09:57 AM
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Originally Posted by NumberDummy
Conanski = that may be true for some vehicles, but not all. Plus, I'm in CA, where things can be radically different than what the 49 state vehicles used inre to computers and CC's.
Yeah.. there will be some differences from year to year, vehicle to vehicle so I agree you can't just cover everything with a blanket and say it'll work no problem. The differences can be worked around in many cases though so doesn't have to be a show stopper, just need to know how to fix the issue. This appears to be unrelated to this case however, it seems the only thing changed was the motor, all electronics and wiring were reused.
 
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