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How to jump fuel pump relay - 1998 Volvo V70

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Need to know what leads to hook up to so I can direct test the fuel pump in a 2004 chevy classic


Pull the fuel pump relay. Jump pins 30 and 87. 30 has power all the time, 87 is the fuel pump. The bottom of the relay will show you which ones to jump.

Dec 04, 2016 | Cars & Trucks

1 Answer

Dont know which fuse operates fuel pump


) Unplug the main relay and then turn the key from off to ON(II).

2) Use a jumper wire or paperclip to jump terminal 1 to terminal 7 in the main relay plug. Does the fuel pump run?

3) Now use the jumper wire or paperclip to jump terminal 5 to terminal 7 in the main relay plug. Does the fuel pump run?


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Jan 05, 2014 | 1994 Honda Civic

1 Answer

2000 2.2l cavalier no power at the fuel pump


No, there would not be another fuse. How did you jump the pump, at the pump relay, or at the gas tank? I would want to know if the power feed for the pump is present at the relay. If you jumped it there, the feed is good. If you pull the relay out, one terminal for the relay should be hot at all times. Two terminals should be hot when cranking the engine over- the power feed for pump, and the signal from computer to the relay's coil side. If you have both signals, check for a pump ground problem.
If a security light is on, the pump or injector circuit may be immobilized.

Nov 11, 2013 | 2000 Chevrolet Cavalier

1 Answer

Whole fuel system


The main fuel pump in a Volvo is really well built and rarely fails (Bosch simply makes great fuel pumps). A good survival trick if you think a main fuel pump might be bad... give it a quick tap with a wrench. For best results, if possible, tap the pump when cranking the engine (while power is going to the pump). If the pump is bad, often the tap will make it come to life and it may stay running until you shut it off. This trick can get you back on the road and get you home in an emergency. If it's a bad fuel pump relay, this will NOT work as there will be no power going to your pump. If this is the case, you might try the below relay bypass "jump" trick to get power going to the pump. TESTING YOUR FUEL PUMP
How to "JUMP" the fuel pump circuit at your Volvo 240 fuse panel:The fastest method to make the main fuel pump run (bypassing the Fuel Pump Relay) is by jumping two circuits at the fuse panel (left side driver's kick panel).

You can make a jumper from a wire with stripped ends or even a straightened paperclip. Jump the circuits on the right side of the fuses for best results
For a 1979-84 240, jump fuse circuit #5 to #7.
For a 1985-93 240, jump fuse circuit #4 to #6.


If the main fuel pump doesn't begin running when jumped (you should definitely hear it humming), you either have a faulty fuel pump or faulty wiring to the pump (bad wiring is really common under an old 240, near the pump). This test of course assumes your battery is good.
If one of the fuses blows during this test, the pump circuit wiring is shorting to ground somewhere between the fuse panel and the pump.

thx



Jan 18, 2012 | 1984 Volvo 240 Series

1 Answer

Ihave a dodge neon 1996 and i dont have power in the fuel pomp and is new i have a feling is a electric problem all redi chek the relay and is good and if i jump this relay the fuel pom work.


if the relay seems to be fine and all fuse are good, and jumping power to opperate the fuel pump at relay works, then there is a broken wire from the ECU to the fuel pump relay, or the ECU is shot.

Jun 18, 2010 | 1996 Dodge Neon

1 Answer

Fuel won't pump to the carbarator


The fuel pump relay needs to be working to turn on the fuel pump. The fuel pump relay is behind the firewall of the battery. To confirm it is bad, pull off the relay and jump the wire at # 7 and #8 to energize the fuel pump. If it works then replace the relay. Good luck.

Mar 13, 2010 | 1989 Mercedes-Benz 300-Class

2 Answers

1994 buick park avenue . driving home and shut off


how did you jump the fuel pump relay, by bypassing the relay or by applying power to contact that closes the relay? If you bypassed the relay completely you need to b ench test the relay you can do this easily by using any 12v dc power source. If you tested the fuel pump relay by applying power to the relay and the pump run and developed pressure. I suspect a wiring or ground issue. Good luck

Oct 07, 2009 | 1997 Buick Park Avenue

2 Answers

Fuel pump relay or emergency engine shut off


something is killing the relays poss fuel pump drawing to much amperage check pump with amp probe is pump noisey?

Dec 19, 2008 | 1993 Mitsubishi 3000GT

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