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Fuel pump relay overheating - 2003 Pontiac Grand Am

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Windings in the pump going down ,renew the fuel pump

Posted on Apr 30, 2010

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Posted on Jan 02, 2017

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Fuel Relays failing constantly


check the prongs where the relay plugs in- if corrosion or crud clean and check power --with the new pump check those connections are clean and check for chafing or damaged wiring --the fuel pump may be laboring and pulling higher amps and over heating relay new doesnt mean free from defects --fuel pump overheating and popping relay

Jun 09, 2016 | 1983 Ford F 250

1 Answer

Fuel pump relay overheating..tried new fuel pump, relay,repair engine ground..believe it is a loose ground from relay to somewhere, can't find location of ground


The relay grounds are the fuel pump and the ECM. If it over heats, it's because the pump is pulling to many amps. Replace the hot wire to the pump and the ground wire from the pump. One or both will solve your problem.

Aug 02, 2015 | Cars & Trucks

1 Answer

Where is fuel pump relay switch located on a 94 gmc Sonoma. Cannot locate to test. Truck starts but as driving the is a click noise and shuts off. It restarts after a minute. Please help


Check in main fuse block with other relays. Should be labeled. Relay kicking out may be caused by overheating = bad fuel pump or dirty filter. Test fuel pressure too.

Feb 13, 2015 | 1994 GMC Sonoma

1 Answer

No power to fuel pump or gage replac relay still no power


If the engine cranks and tries to run but dies when the key is released then the oil pressure/fuel pump cutout switch or wiring is defective. My 96 and 97 GM trucks had problems with the relay connections getting overheated and the terminal in the fuse/relay box didn't make good connection even with a new relay. If the fuel pump is in the tank then either the connector on the top of the tank for the fuel pump module is loose/defective or the fuel module ground connection at the engine is loose/disconnected.

May 12, 2013 | 2001 GMC Savana

1 Answer

1985 FORD BRONCO TWO NEW FUEL PUMPS NEW RELAYS AFTER THE FUEL PUMPS IT RAN THEN QUIT AFTER THE RELAYS IT RAN THEN QUIT


check for faulty ground circuits . bad grounds can cause an overheating problem in the relays and other components.

May 16, 2012 | 1985 Ford Bronco

2 Answers

1999 tahoe, was running rough, I changed the plugs,that didn't help. Then for no reason it ran like new, then is was stalling and wouldn't rev up, Then it wouldn't start at all. I noticed no...


now that leg won't lite up and the fuel pump won't work ????? The PCM - engine computer supply's B+ voltage to control the fuel pump by energizing the relay .
GM Fuel Pump Relay Testing

Jun 05, 2017 | Chevrolet 1500 Cars & Trucks

1 Answer

Fuel pump relay overheats,shuts down,1997 blazer


If you replaced the relay the fuel pump is going out, This means the pump is overheating and overdrawing current from relay

May 31, 2010 | 1997 Chevrolet Blazer

1 Answer

1995 CRYSLER LHS,WONT START AT ALL,TRIED CHANGING SENSORS,FEUL PUMP,COIL PACKS AND COMPUTER BOXES,JUST WONT START?ANY IDEA?


If it is cranking with out turning over I would check the fuel pump and ignition relay, crank and cam sensors.
Basically you need to figure out if you have a spark issue or a fuel issue. (as long as you didn't have a serious overheating problem). One way to help you figure this out is by spraying in some starting fluid while cranking the engine. If it starts you have a fuel problem, if nothing then you have a spark problem (assuming you didn't blow the head gasket from overheating and was running normally before this happened).
Based on what you've already done here are my recommendations:
No spark: check ignition relay
No fuel: check fuel pump relay (aka shutoff relay, aka fuel pump shutoff relay), crank and cam position sensors, fuel filter.
There is also one other possibility, that the timing belt snapped. You would need to remove the timing cover to check this.

Feb 05, 2010 | 1995 Chrysler LHS

2 Answers

Both fuel pump relays run hot. I have replaced both of them. The truck started and ran for about 30 minutes then quit. I replaced the relays and it ran for a few minutes and quit again.


You could have a bad fuel pump relay switch. The fuel pumpmag-glass_10x10.gif relay switch gets the fuel pump running in the vehicle during the start cycle. The terms fuel pump relay and fuel pump relay switch are used interchangeably. The fuel pump relay begins its job when the automobile operator turns to the ignition on, but before the motor is actually running. At that point, the fuel pump relay in some cars sends a signal to the ignition switch, which in turn sends a signal to the fuel pump to turn on. Others fuel pump relays have actual circuitry inside of them that receive the ignition signal and directly signal the fuel pump to engage.

Have a great day!

Sep 05, 2009 | Ford F-350 Cars & Trucks

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