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Re: fuel pump
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Posted by Bernie [Email] (#1501) [Profile/Gallery] (more from Bernie) on Fri, 6 Mar 2020 18:25:00 Share Post by Email
In Reply to: Re: fuel pump, roofer1011 [Profile/Gallery] , Thu, 5 Mar 2020 21:33:40
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Hello,
I think the relay in position F on the panel is the fuel pump relay. You have to remember on your car that the crankshaft position sensor must send a signal to the engine computer before the computer will pull down the fuel pump relay. Does the tach move when the car is cranking? Also you might want to check the fuse for the engine ecm to make sure it has 12v when cranking. A weak battery or failing ignition switch will sometimes not provide the full voltage to the engine ecm then it won't turn on and thus not turn on the fuel pump.If you have a noid light you could put it on one of the injectors connector to see if it flashes when cranking. This would tell you the engine ecm is powered and should be providing the ground to the fuel pump relay. Or it could tell you you have problem with one of the above items(cps,ignition switch, engine ecm etc..) Good Luck, Bernie
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George Riggin Specialty Automotive
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