Fuel Pump Relay
Question:
Help , My mom is down for the holidays and her 91 Explorer Just stopped running all of the sudden , I could not here the fuel pump running so I thought it was bad , Pulled tank Pump is Good , I know their is a fuel pump relay but I can’t find it HELP !!!!! Thanks , Scott
Response:
The fuel pump relay in under the fuse panel under the hood on the passengers side. It is the green colored relay. Good luck.
Response:
> Help , My mom is down for the holidays and her 91 Explorer Just stopped > running all of the > sudden , I could not here the fuel pump running so I thought it was bad > , Pulled tank Pump is > Good , I know their is a fuel pump relay but I can’t find it HELP !!!!! > Thanks , > Scott
Hi Scott, I own a 91 Explorer. I believe the fuel pump relay is at the fuel pump, on the gas tank. I guess it could fail, since it has happened to me twice in the last year (the second time it was repaired no charge since the second time was only a few months after the first time). However, in my case, my problem was the opposite of your Mom’s – my fuel pump kept running after the engine was switched off. There may be another problem. There is an impact switch to cut switch off the fuel pump in case of an impact (head-on, rear end, roll over, etc.). As I recall, the reset button is under the dash on the passenger side. Check the owner’s manual to be sure. When I bought my Explorer, they would not let me off the lot until this was explained. Hopefully, this will fix you up. Lee
Response:
at your local parts store in the "specialty tools" section
– Hide quoted text — Show quoted text ->Your starter solenoid wire turns the fuel pump relay on when cranking, when >engine is running the fuel pump is powered by the oil pressure switch ( behind >the fuel filter ). >The oil pressure switch is a common problem if your fuel pump dosen’t work. >There is a fuel pump fuse on the fire wall on the passenger side, you need to >pull off the plastic shield. The fuse is inside a holder…. >Using a test light to ground, probe the fuse while someone is cranking the >engine, >the light should light. Then when the engine is running it should remain lit, >if not then the oil pressure switch is bad or it could be the pump. > Fine, but where can I find a 1 1/16" deepwell socket deep enough > to get over the barrel of the switch to get the old one out and the > new one in?
Response:
That is a special Oil pressure Sender socket. Check with your parts store if you could rent one or a place like Pep-Boys in their tool section might have one. Sorry can’t help you there in the tool selection. Bill
Response:
>at your local parts store in the "specialty tools" section
Tried the "specialty tools" section at Discount and they didn’t have one. I guess that I’ll have to try some other places now that I know what I need. – Hide quoted text — Show quoted text -> >Your starter solenoid wire turns the fuel pump relay on when cranking, >when > >engine is running the fuel pump is powered by the oil pressure switch ( >behind > >the fuel filter ). > >The oil pressure switch is a common problem if your fuel pump dosen’t >work. > >There is a fuel pump fuse on the fire wall on the passenger side, you >need to > >pull off the plastic shield. The fuse is inside a holder…. > >Using a test light to ground, probe the fuse while someone is cranking >the > >engine, > >the light should light. Then when the engine is running it should remain >lit, > >if not then the oil pressure switch is bad or it could be the pump. > Fine, but where can I find a 1 1/16" deepwell socket deep enough > to get over the barrel of the switch to get the old one out and the > new one in?
Response:
>That is a special Oil pressure Sender socket. >Check with your parts store if you could rent one or a place like Pep-Boys in >their tool section might have one.
Discount seemed to have everything but one of those. I’ll have to try some other places to find one. NAPA or one of those specailty tool vendors should have one if no one else does. >Sorry can’t help you there in the tool selection.
You helped a lot with diagnosis. I’ve tried multitudes of things to cure this stalling problem. I was figuring ithad something to do with fuel delivery. I had similar problems a couple of years ago when I was having fuel leaks and replacing the fuel hoses seemed to cure that but I don’t have fuel leaking out this time. – Hide quoted text — Show quoted text ->Bill
Response:
Sears has them. Not cheap for a one time use though. Or just cheat and use large vice grips. Steve
> Fine, but where can I find a 1 1/16" deepwell socket deep enough > to get over the barrel of the switch to get the old one out and the > new one in?
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Response:
– Hide quoted text — Show quoted text ->That is a special Oil pressure Sender socket. >Check with your parts store if you could rent one or a place like Pep-Boys in >their tool section might have one. > Discount seemed to have everything but one of those. I’ll have > to try some other places to find one. NAPA or one of those specailty > tool vendors should have one if no one else does. >Sorry can’t help you there in the tool selection. > You helped a lot with diagnosis. I’ve tried multitudes of things > to cure this stalling problem. I was figuring ithad something to do > with fuel delivery. I had similar problems a couple of years ago when > I was having fuel leaks and replacing the fuel hoses seemed to cure > that but I don’t have fuel leaking out this time. >Bill
Dave
Response:
>Sears has them. Not cheap for a one time use though. Or just >cheat and use large vice grips.
The problem is the space restrictions. I thought about using pump pliers but couldn’t get them in the confines between the engine and the firewall.
Response:
– Hide quoted text — Show quoted text -> >That is a special Oil pressure Sender socket. > >Check with your parts store if you could rent one or a place like >Pep-Boys in > >their tool section might have one. > Discount seemed to have everything but one of those. I’ll have > to try some other places to find one. NAPA or one of those specailty > tool vendors should have one if no one else does. > >Sorry can’t help you there in the tool selection. > You helped a lot with diagnosis. I’ve tried multitudes of things > to cure this stalling problem. I was figuring ithad something to do > with fuel delivery. I had similar problems a couple of years ago when > I was having fuel leaks and replacing the fuel hoses seemed to cure > that but I don’t have fuel leaking out this time. > >Bill >Dave
Yeah. Could end up having to pull the engine.
Response:
$3.99 at Harbor Freight… harborfreight.com… part #36657-1vga Will that one work? >Sears has them. Not cheap for a one time use though. Or just >cheat and use large vice grips. > The problem is the space restrictions. I thought about using > pump pliers but couldn’t get them in the confines between the engine > and the firewall.
– ‘88 Honda CBR600F ‘90 Chevy Z71 Sportside MSN: Tzihuac
Response:
– Hide quoted text — Show quoted text -> >That is a special Oil pressure Sender socket. > >Check with your parts store if you could rent one or a place like >Pep-Boys in > >their tool section might have one. > Discount seemed to have everything but one of those. I’ll have > to try some other places to find one. NAPA or one of those specailty > tool vendors should have one if no one else does. > >Sorry can’t help you there in the tool selection. > You helped a lot with diagnosis. I’ve tried multitudes of things > to cure this stalling problem. I was figuring ithad something to do > with fuel delivery. I had similar problems a couple of years ago when > I was having fuel leaks and replacing the fuel hoses seemed to cure > that but I don’t have fuel leaking out this time. > >Bill >Dave
I found a socket at Auto Zone and used it put the new one in. I took it for a test run and now the engine purrs like a kitten maybe even better than it has since I got it. I’m glad that I found this site and all of you were of such help.
Response:
Glad it worked out Bill
Response:
>Your starter solenoid wire turns the fuel pump relay on when cranking, when >engine is running the fuel pump is powered by the oil pressure switch ( behind >the fuel filter ). >The oil pressure switch is a common problem if your fuel pump dosen’t work. >There is a fuel pump fuse on the fire wall on the passenger side, you need to >pull off the plastic shield. The fuse is inside a holder…. >Using a test light to ground, probe the fuse while someone is cranking the >engine, >the light should light. Then when the engine is running it should remain lit, >if not then the oil pressure switch is bad or it could be the pump.
Fine, but where can I find a 1 1/16" deepwell socket deep enough to get over the barrel of the switch to get the old one out and the new one in?
Response:
>Your starter solenoid wire turns the fuel pump relay on when cranking, when >engine is running the fuel pump is powered by the oil pressure switch ( behind >the fuel filter ).
Ok. That could be a bit of a bear to get at. >The oil pressure switch is a common problem if your fuel pump dosen’t work.
Ahhhh. Looks like another trip to Discount Auto Parts is in order. >There is a fuel pump fuse on the fire wall on the passenger side, you need to >pull off the plastic shield. The fuse is inside a holder….
I found that earlier. It is under the shield on the other side of the terminal strip with the fuseable links. >Using a test light to ground, probe the fuse while someone is cranking the >engine, >the light should light. Then when the engine is running it should remain lit, >if not then the oil pressure switch is bad or it could be the pump.
New pump. If I short "E" to "A" with a jumper on the connector for the relay, the pump works. Thanks.
Response:
Your starter solenoid wire turns the fuel pump relay on when cranking, when engine is running the fuel pump is powered by the oil pressure switch ( behind the fuel filter ). The oil pressure switch is a common problem if your fuel pump dosen’t work. There is a fuel pump fuse on the fire wall on the passenger side, you need to pull off the plastic shield. The fuse is inside a holder…. Using a test light to ground, probe the fuse while someone is cranking the engine, the light should light. Then when the engine is running it should remain lit, if not then the oil pressure switch is bad or it could be the pump.
Response:
What turns on the fuel pump relay that turns on the fuel pump in a 1994 GMC Sierra 3500 HD Turbo Diesel?
Response:
the ecm fuse… as far as i know.. there is a couple of them ..check them all
– Hide quoted text — Show quoted text -> What turns on the fuel pump relay that turns on the fuel pump in > a 1994 GMC Sierra 3500 HD Turbo Diesel?
