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165 swap problems

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Old Mar 21, 2006 | 07:01 AM
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SMURFN' Z28's Avatar
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From: Lakewood, CO
Car: 1994 Jeep Wrangler
165 swap problems

Hey guys....

I just swapped an 89' ecm into my 85' z28. Now it won't start! I think it is a fuel issue as i do not hear the fuel pump priming Sugestions? Although I did modify the prom, I think I eliminated the possibility that the ecm or the prom were bad when i plugged in an unmolested 87' ECM that was working when i pulled it out of its original car. Is there anything that problem could most likely be? if not... i guess Im gonna be weeding thru some wiring today
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Old Mar 21, 2006 | 07:19 AM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Try this site out:

http://www.eecis.udel.edu/~davis/z28/

Mike has a lot of info on the swap you made.

RBob.
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Old Mar 21, 2006 | 03:27 PM
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I followed those directions.... no fuel pump prime. I have even tried two different ecms. obviously somthing isnt hooked up right. I just need to know what part of the swap i would need to screw up in order to prevent the fuel pump from priming? How the 2 maf relays are hooked up wouldnt stop the pump from priming right? I just want to narrow down what it could be.... nothing on the list of repinnings appears to have much to do with the fuel pump.
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Old Mar 23, 2006 | 07:49 AM
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could hooking up the 2 maf relays wrong have anything to do with no fuel pump?
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