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Fuel pump resistor - 2009 Toyota Land Cruiser

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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

on Mar 01, 2010 | Pontiac Grand Prix Cars & Trucks

3 Answers

Does anyone have a picture of the location for the fuel pump resistor on a 1993 lexus ls400 I cant seem to figure out the location from the diagrams ive looked at. Thanks


Its supposed to be to the right of your battery ( if you are facing the engine from the front of the vehicle) at least thats where it is on my 96LS400

Nov 21, 2014 | 1993 Lexus Ls 400

1 Answer

Put a new fuel pump on and it will not run


Check for a fuel pump resistor which would be external from the fuel pump, my 1997 Pontiac Grand Prix had one. It's reminiscent of the old ignition coil resistors. It's used to regulate the speed of the fuel pump. To test to see if it's bad, jump it out. If the car continues to run, it's bad. You can either then replace it or leave it jumped out like I did.

Apr 04, 2014 | 1997 Pontiac Grand Prix

1 Answer

Fuel pump removale


Hi there,

Note: as your vehicle is 2009, it may still be covered under Manufacturer's Warranty. If still covered, you should have them replace at no charge.

Firstly, unless you have read your codes from your vehicle's computer and confirmed your fuel pump is actually faulty (ie Code P0203), you should should check your diagnostics first - as other electrical components could contribute to the fuel pump not working.

Start by inspecting the following circuit components:


FUEL PUMP RELAY INSPECTION


1. REMOVE RELAY BOX COVER
2. REMOVE FUEL PUMP RELAY (Marked: F/PUMP)


wolfman304_21.gif

3. INSPECT FUEL PUMP RELAY CONTINUITY


(a) Using an ohmmeter, check that there is a continuity between terminal 1 and 2. If there is "NO" continuity, replace the relay.


(b) Check that there is no continuity between terminals 3 and 5. If there "IS" continuity, replace the relay.


wolfman304_22.gif



4. INSPECT FUEL PUMP RELAY OPERATION


(a) Apply the battery positive voltage across terminals 1 and 2.


(b) Using an ohmmeter, check that there is a continuity between terminals 3 and 5.
If there is "NO" continuity, replace the relay.

wolfman304_23.gif

5. REINSTALL FUEL PUMP RELAY
6. REINSTALL RELAY BOX COVER


FUEL PUMP RESISTOR

wolfman304_24.gif

INSPECTION


1. REMOVE FUEL PUMP RESISTOR
2. INSPECT FUEL PUMP RESISTOR

wolfman304_25.gif

Using an ohmmeter, measure the resistance between the terminals.


Resistance: 0.70 - 0.76 W at 20°C (68°F). If the resistance is not as specified, replace the resistor.

3. REINSTALL FUEL PUMP RESISTOR

If all the above components prove satisfactory, then proceed with fuel pump removal.

Access to the fuel pump & sender unit is via a service hole. The service hole is located under the No.1 Rear Seat (through the floor), so you will need to lift the rear seat & carpet, then remove the service cover.


wolfman304_26.gif


Cheers,



"If this has helped you resolve your issue, please be kind enough to leave a testimonial"


Jun 11, 2011 | 2009 Toyota Land Cruiser

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

1 Answer

03 bonneville hard starting,stalls intermittently.seems like starving for gas at times. changed fuel filter and added several fuel injector cleaners


Hello! There are a couple of possibilities for your issue:

1) Fuel pump relay - this tells the fuel pump resistor to turn the fuel pump, either in high or low mode.
2) Fuel pump resistor - see above (very common issue)
2) Faulty fuel pump


Hope this helps and thanks for using FixYa!

Oct 01, 2009 | 2003 Pontiac Bonneville

1 Answer

1998 bonneville. turn key on and you can hear the fuel pump for 2 to 3 seconds. engine will start but only run at the most a minute. then when you turn the key off and back on you cannot hear the pump and...


Hello! You're symptoms sound very much like a common problem associated with the fuel pump resistor. The 3.8L Series II engine has a two speed fuel pump. There are two relays that control the fuel pump via the PCM module. The fuel pump relay and fuel pump hi-speed relay. Tied into the hi-speed relay is a fuel pump resistor that may go bad.

Symptoms vary but primarily the engine will start but die in a matter of seconds due to insufficient fuel pressure.

Here is a picture of the relay (this is the picture for a Grand Prix, but the box is the same for your vehicle) - which is located in the fuse box in the engine compartment:

e3ccead.jpg
What you can do to both diagnose this and either narrow it down to this or disqualify it as the culprit is remove relay #15, and bend out the tab labeled "85", and then reinstall the relay. If this does solve your problem, then you need to replace the fuel pump resistor, you can find it here. Doing this will bypass the resistor, and place the fuel pump in "high" speed mode at all times. Once you have replaced the resistor, you need to bend the tab back to its normal position and replace the relay.
NOTE: while this may be a helpful diagnosis tool, and provide a temporary fix - doing this procedure for a prolonged period of time can lead to fuel pump failure. Use this at your own risk.

Sep 24, 2009 | 1998 Pontiac Bonneville

2 Answers

My car starts but after a while dies waht can be


Hello! You're symptoms sound very much like a common problem associated with the fuel pump resistor. The GTP engine has a two speed fuel pump. There are two relays that control the fuel pump via the PCM module. The fuel pump relay and fuel pump hi-speed relay. Tied into the hi-speed relay is a fuel pump resistor that may go bad.

Symptoms vary but primarily the engine will start but die in a matter of seconds due to insufficient fuel pressure.

Here is a picture of the relay - which is located in the fuse box in the engine compartment:

e3ccead.jpg
What you can do to both diagnose this and either narrow it down to this or disqualify it as the culprit is remove relay #15, and bend out the tab labeled "85", and then reinstall the relay. If this does solve your problem, then you need to replace the Fuel Pump Resistor. Doing this will bypass the resistor, and place the fuel pump in "high" speed mode at all times. Once you have replaced the resistor, you need to bend the tab back to its normal position and replace the relay.
NOTE: while this may be a helpful diagnosis tool, and provide a temporary fix - doing this procedure for a prolonged period of time can lead to fuel pump failure. Use this at your own risk.


Hope this helps and good luck!

Sep 24, 2009 | 1997 Pontiac Grand Prix

1 Answer

The car some times does not start rightaway, some time stalls in the street and I wait a wile then starts


The L67 GTP has a two speed fuel pump. There are two relays that control the fuel pump via the PCM module. The fuel pump relay and fuel pump hi-speed relay. Tied into the hi-speed relay is a fuel pump resistor that may go bad.

Symptoms vary but primarily the engine will start but die in a matter of seconds due to insufficient fuel pressure.

Here is an easy method to bypass the fuel pump resistor which puts the fuel pump in the high speed mode:

b0a8568.jpg

Keep in mind this is a temporary fix and your fuel pump will be running in hi-speed all the time, which can lead to premature failure - and another component you'll need to replace. You can purchase the resistor here.

Hope this helps!

-KC GTO Dad

Aug 12, 2009 | 2000 Pontiac Grand Prix

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