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88 ranger cold start

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Old Jul 24, 2003 | 10:54 AM
  #1  
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Unhappy 88 ranger cold start

I have a1988 Ranger 2wd 5sp 2.9l. when I turn on the key the fuel pump runs constantly. Even unplugging the fuel pump relay dont stop it. Help me, Please!?!
 
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Old Jul 24, 2003 | 07:50 PM
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88 ranger cold start

If the relay is good, then it could be the pump itself, or the connections.
 
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Old Jul 25, 2003 | 06:55 AM
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88 ranger cold start

Rockledge, Thank You for the info. I got this truck used and I am finding problems I shouldn't have. Connections relocated and such. Guess it's time to get busy!
 
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Old Jul 26, 2003 | 06:55 PM
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88 ranger cold start

Sounds like somebody has wired around the fuel pump relay.
I would say the fuel pump relay, or inertia switch went bad
for somebody to do this.
 
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Old Jul 26, 2003 | 07:31 PM
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88 ranger cold start

Thank You, Bob Ayers. You hit the nail on the head. Somebody had wired around it because of a bad relay. Funny how we can be so ignorant sometimes.
 
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Old Nov 25, 2005 | 01:12 PM
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Where is the fuel pump relay?

On my 88 Ford ranger where is my fuel pump relay?
Dead Bird
 
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Old Nov 25, 2005 | 04:45 PM
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Dead bird, the relay should be located on the passenger side fenderwall, next to the EEC relay. They are both by the airbox I believe. The fuel relay should have a pink wire with a black stripe running from the relay into the cab to the inertia switch. The original relay on mine was green I believe.
 
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Old Nov 25, 2005 | 11:57 PM
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Thanks for your input!

THat definately helps.
My truck had been dying after warming up, and when it did I had no voltage to my inline fuel pump. I tried replacing the pump in tank, as my fuel guage was faulty-- no luck.Then I replaced the distributor and module-- no luck. I had thought of the fuel pump relay, Inertia switch and the oil pressure switch. Any other ideas ?

Dead Bird
 
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Old Nov 26, 2005 | 12:02 AM
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Did you try pulling codes dead bird? Just out of curiosty it might have popped one.

I'd try testing voltage on the pump relay and pump itself. The intertia switch is easy to check, look above the passenger footwell, just under the carpet, see if it's triggered. I would voltage test it as well, just to make sure. It's a start.
 
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Old Nov 26, 2005 | 01:56 PM
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thanks

Thanks
That does give me more to try.
Dead Bird
 
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Old Nov 26, 2005 | 05:35 PM
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Question Help!

Where is th oil pressure switch? I'm at a loss. Is it behind the fuel rail in the top of the block?
 
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Old Nov 26, 2005 | 06:58 PM
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The oil pressure sender on a 2.9 is on the drivers side of the block. The best way to see it is from under the truck, some have it on an extension tube.
 
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Old Nov 26, 2005 | 07:10 PM
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Actually I have a 2.3 L 4cyl., If that makes a difference.
 
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Old Nov 26, 2005 | 11:16 PM
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Didn't I just see this in another topic...?
 
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Old Nov 27, 2005 | 03:02 AM
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I think I can help you with the oil pressure sender's location. I'll assume that an '88 2.3 is the same as my '87's. Look at the back of the drivers side of the engine, near where the block and head meet I think. You should see a big dome shaped thing with a wire plugged in to it. That is the pressure sender. You have to use a wrench to get it out. Good luck, you should be able to see it behind the upper intake there.
 
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