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Fuel relay keeps burning out where do u check for bad ground at

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How do I fix no voltage to fuel pump.


Sounds like relay ground is bad. If supply 12V to relay and meter to ground, you see the 12V potential. If you meter the other side of relay to ground and see the 12V potential, then ground is not connected to that side (but your relay coil is good).

Feb 07, 2015 | 2002 Nissan Sentra

2 Answers

No power to fuel pump on 92 olds silhoutte


The oil pressure sensor only keeps the pump running after the vehicle is started. If you turn key to on, the computer should signal to the fuel pump relay, turning the pump on for a couple of seconds to pressurize the fuel system. Then the computer signal stops. When the key is turned to start-cranking the engine- the computer again energizes the fuel pump relay, keeping the pump running until the engine starts.
If you have a voltmeter or test light, pull the relay out and check the relay terminals. One should be hot at all times-the power feed for the pump. The computer signal will be on the coil side of the relay-will have power for 2 or 3 seconds after key is turned to on. Or it will have a constant signal when the engine is cranking. If you can find both hot terminals at the relay, then start looking for a bad wire from relay to pump, or a bad ground for the pump, or a bad ground for the relay's coil side. Post back if unclear or other questions. When you pull the relay out, the diagram for it will be on the side of the relay-telling you which is the power feed and the terminal to the pump, and the coil side of relay, both the coil power side and the coil ground terminal.

Jan 16, 2014 | Oldsmobile Silhouette Cars & Trucks

1 Answer

Fuel pump relay keeps burning out


a wire in this circuit is shorted out, you must trace the wires in this circuit all the way to the fuel pump, check all connections, check each wire for continuity with key on, use a trouble light tester, looks like an ice pick, w/wire lead w/ alligator clip attached to a good ground. now go do it ,its easy, keep it simple. you must find this short before replacing your new relay, or it will happen again.

Jan 14, 2013 | 2005 Ford Explorer

2 Answers

2000 Kia Sportage ECM ECU Bad?


Check the pcm ground pins to make sure they are grounded. 6, 28, 34, and 55.


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Jul 23, 2017 | 2000 Kia Sportage

1 Answer

Fuel pump relay in glove box on 99 jimmy keeps burning the number 87 prong on relay


You have serious short in wires to the ground so back track these wires with a multimeter if you know how to use one then check this first plus check the voltages.

Jun 09, 2011 | 1997 GMC Jimmy

1 Answer

IT SEEMS I REPLACE MY FUEL RELAYS EVERY 8 MONTHS WHY


Fuel pump is drawing too many amps and relay burns out, could also be affected by a bad ground at fueltank or in harness as high resistance causes heat.

Aug 28, 2009 | 1985 Nissan Pickup

1 Answer

1997 Gmc yukon fuel relay switch continues to burn out. Replaced fuel pump twice and also took it the dealer but no solutions. Truck runs fine for sometimes weeks but the problem continues.


I would have to check the fuel pump with a scope to look at the pattern and check the amps it is drawing . the grounds need to be checked and the pcm checked and reflashed. on the fuel system that would affect the fuel pump and relay to where it would burn it out is grounds , pcm , fuel pump , fuel pump relay. so you should convince them to replace the fuel pump and fuel pump relay under warranty and replace the pcm . and get a diagram and check all grounds. If the pcm is damaged and the current has been affected and instead of say a 5 volt or 2 volt signal it now has a 13.5 volt signal or if a ground is out then the temp of the relay will keep rising non energized a relay is about 99 energized it is around 140 you can check to see how hot that relay is getting. and if i remember correctly you want the pcm drivers checked.

Jun 17, 2009 | 2001 GMC Yukon XL

3 Answers

2001 crown vic keeps burning 30A PCM relay fuse


have fuel pump checked i have known a bad fuel pump shorting out causing pcm fuse to blow.

May 10, 2009 | 2001 Ford Crown Victoria

2 Answers

TRUCK WONT START AFTER IT WAS PARKED


the only thing this could be is the fuel filter is plug or the fuel pump is out before you do all of this check your fuel pump relay first before you go to the first two.

Dec 31, 2008 | 1998 Ford Escort

1 Answer

Fuel problem on my 1998 Camaro


Check for a bad connection to relay. relays shouldnt just go bad after you keep replacing them seems like it would be a bad connection for the relay and when you replace it you move the connection in the fuse panel. find wireing scehmatic just jump the power for the fuel pump directly to power and see if it works if so examine that you have power from the ignition switch and a ground to energize relay and that power is good on feed side of relay.

Oct 14, 2008 | 1998 Chevrolet Camaro

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