Tip & How-To about Pontiac Grand Prix

1997-2003 PONTIAC GRAND PRIX FUEL PUMP PROBLEMS-DEFECTIVE FUEL PUMP RESISTOR

IF YOU OWN A 97-03 GRAND PRIX AND THE FUEL PUMP HAS STOPPED, OR IT BLOWS FUSES, IT IS VERY LIKELY THE FUEL PUMP RESISTOR IS THE DEFECTIVE PART CAUSING THE PROBLEM AND U NEED TO REPLACE IT, FOR FULL ILLUSTRATED INSTRUCTIONS ON REPLACEMENT PROCEDURE GO TO THE LINKL BELOW.

http://rmcgp.clubgp.com/fpresistor.html

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1 Answer

My 2004 Pontiac Grand Prix gt keeps blowing the 30a fuse for the blower motor resistor wondering why it keeps blowing after replacing the resistor I've went through 4 of these fuses


Possible blower motor is defective pulling excessive amperages causing fuse to blow continuously regardless if its still operable.

Aug 18, 2016 | Pontiac Cars & Trucks

1 Answer

larry.bachman@aol.com


no there is not. there is a fuse, relay and resistor that could cause it to stop running

Mar 15, 2014 | 1996 Pontiac Grand Prix

1 Answer

Where is the fuel pump resistor on a 1999 gtp?


It is in the fuse panel mounted under the hood near the overflow coolant bottle.
It is a square shaped device that is actually a relay, labeled with the number 2866.

Feb 14, 2010 | 1999 Pontiac Grand Prix

1 Answer

Engine turns over,but no fuel pressure at relief valve.


Check the fuse to the fuel pump.
The issue is repeated blowing of the fuel pump fuse. This occurs randomly and without warning, normally when medium to high throttle is applied. Generally the RPM's will fluctuate briefly before the fuse blows, which cuts off ALL power to the vehicle.
Especially dangerous on a highway! The first mechanic found a TSB related to the fuel pump resistor, and its default location in the wheel well can cause premature corrosion. Replaced it and relocated as per the TSB.
You can bypass the resistor, it's simple and free. You bend pin 85 on the fuel pump relay #15, in your engine bay fuse and relay box. Good luck and keep me posted, at worst ti's going to be a bad fuel pump and your going to have to drop the gas tank to replace the fuel pump. When you bend the #85 pin from the relay, will set the fuel pump on high mode bypassing the resistor.

Dec 22, 2009 | 2004 Pontiac Grand Prix

3 Answers

98 GRAND PRIX GTP


If you checked the power to the fuse , relay & pump and no power then it is time to check the cam and crank sensor which will tell the pcm to shut power to fuel system. But first make sure their is no power to the fuse relay and pump. Their is no resistor on the frame rail . You can find the resistance values of the cam and crank sensors and ohm them out . you can also put on a scanner and look at live data to check each one and a scope as well.

Aug 05, 2009 | 1998 Pontiac Grand Prix

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