Author Topic: 2.5 tbi ecu failure ?????  (Read 2293 times)

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jaywiz1977

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Re: 2.5 tbi ecu failure ?????
« Reply #15 on: February 25, 2009, 01:28:00 PM »
Wait a min you lost fuel pressure!.?!? what was the fuel pressure when it was there,leave the fuel pressure gauge hooked up, duct tape it to the windshield and read it at idle,reving and then drop it gear and take it for a ride.fuel pressure should be constant and nonfluxuating from about two seconds after the key is turned on till the key is shut off!! if the neddle on the guage moves more than 1psi you have fuel problems and not electrical issues at all(bad pump,plugged fuel sock,pressure leak).take a look at these and let me know.

Castr8r

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Re: 2.5 tbi ecu failure ?????
« Reply #16 on: February 25, 2009, 09:18:40 PM »
The  distributor on an '89 4 cyl. Wrangler has no vacuum advance- the advance curve is programmed into the ICU.  Your vacuum advance distributor may work OK if the vacuum advance mechanism is pinned so it won't work.  You will also need a rotor from an '89 banger; not sure if it will fit.  The best bet would be to get the correct distributor. 

Have you checked your coil?