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power to fuel pump
Posted 27 August 2003 - 03:24 PM
Posted 27 August 2003 - 04:31 PM
I wish I had a better suggestion to this issue other then "ive been there and dont give up"
Posted 27 August 2003 - 05:20 PM
BTW Steve, there is a relay under the dash somewhere, but I'm not sure where--I've never had to mess with mine. Wait, here it is in a thread from a few days ago.
Posted 27 August 2003 - 07:13 PM
Posted 27 August 2003 - 10:41 PM
Posted 27 August 2003 - 11:12 PM
1)Test for power and ground at the pump when you turn the key on(it only lasts a few seconds)
2)Test for power and ground with the motor crankin
3)Hotwire the pump to test function. If the pump won't spin try reversing polarity as they can get bound up with sediment and assorted crap. Reversing the power reverses the pump and back flushes it(takes a few cycles).
Posted 28 August 2003 - 08:24 PM
Still would like to know which transistor to changeout in the ECU if necessary.
Posted 28 August 2003 - 08:41 PM
Posted 28 August 2003 - 09:08 PM
This will let you see if the circuits working while sitting in the comfort of your drivers seat
Posted 28 August 2003 - 10:49 PM
As far as listening for the fuel pump, I don't hear it. Had the wife turn the key on while I was down listening. Even tried my Sooby that runs and didn't hear the fuel pump. However, I didn't listen while cranking.
How can I tell which way to hot wire the pump so I know its pulling? I may have heard it making bubbles in one direction, I could pursue that again.
Posted 28 August 2003 - 11:04 PM
Posted 28 August 2003 - 11:05 PM
Ah. Archives are good. Repair manual good.
Post more Q's when you get there if need be.
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