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09-10-2008, 07:25 PM
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#1 | |
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AF Newbie
 Join Date: Jul 2008
Location: Ludlow, Massachusetts
Posts: 20
Thanks: 0
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1994 Transport Fuel Problem
1994 Pontiac Transport 3.8. Turn key on fuel pump does not go on. Crank car for 10 + seconds and car starts. If restarted within 5 min ok, longer than I have to crank it for at least 10 sec. before it starts. Took fuel pressure test and got a reading of less than 5 psi. Replaced fuel pump at gas tank and results are the same. Cannot hear fuel pump when key is turned on but after cranking for a while car starts. Tried testing pressure regulator but cant get pressure up without starting car. Anyone else have this prob.?
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09-11-2008, 03:53 AM
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#2 | |
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AF Newbie
Join Date: Oct 2005
Location: Orimattila
Posts: 42
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Re: 1994 Transport Fuel Problem
Fuel pump relay is broken. When you crank the engine long enough, fuel pump gets power through oil pressure sender, and engine starts. I dont't have books available right now to look where the relay is located. Hope this helps a little....
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09-12-2008, 12:11 PM
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#3 | |
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AF Newbie
Join Date: Jul 2008
Location: Ludlow, Massachusetts
Posts: 20
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Re: 1994 Transport Fuel Problem
Bought Haynes Manual for Transport and it showed where pump relay was. Tested by connecting 12 volts to gray wire. Fuel pump came on so I changed relay and car works great. Thanks for your help
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