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Fuel problems topkick fuelpump runs few secons then stops

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1994 GMC Topkick not getting power from the fuel pump. Where is the fuel pump relay located?


Before going there, check your INERTIA SWITCH (INTERTIAL CUTOFF SWITCH). A small accident or a sharp bump can cause the cutoff switch to trip. The switch is located adjacent to the passenger side rear shock tower, and there is a pushbutton to reset (on most Topkick tucks). Carbureted Topkick trucks do not have cutoff switches, and some custom trucks have the inertia switch relocated.

May 13, 2015 | GMC Cars & Trucks

1 Answer

1990 GMC TopKick Dump Truck Shutdown Issue


Electrical problem. Something gets hot and stops working. Could be fuel pump or something in the ignition system, so losing spark. After it stalls, spray starting fluid in the intake and try to start. If it fires up and runs a few seconds, you know it's a gas problem. If starting fluid doesn't do anything, check for spark, it's probably an ignition failure-possibly the coil or the ignition control module. The module can be tested at a parts store.

Dec 23, 2013 | Cars & Trucks

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Car moves about 2 kilometeres and then engine will stop running. But after waiting for some few minutes you turn the engine on and it responds.


If you have a "check engine" light on, take it to Autozone, Advance, or Oreilys for a free scan.

One thing to try is borrow a fuel pressure test gauge from the above 3 places and when the car stalls turn the engine off, open the hood, and put the gauge on the fuelrail test port. You should have pressure.

If you do not have pressure, then either the fuelpump is getting hot or the fuelpump relay is shutting down.

If you do have fuel pressure, pull a sparkplug wire and see if the engine has spark by shorting the wire to a ground and have someone crank the engine.

Nov 11, 2012 | 2003 Kia Rio

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1988 ford f150 won't stay running


I You can get free fusebox layouts at Autozone.com by registering your vehicle.

Try changing the fuel filter. May be too much resistence is causing the fuelpumps to trip their limit switches.

If you have not used a scanner, someone may have one for this old style system. An bad O2 sensor can adjust the fuel mix too lean to run.

If you have a fuelpressure regulator, it may only cycle once for starting and then fail to trigger the fuelpump a second time to restart the fuelpump.

Check with FordF150blog.com or some of the 4x4 truck offroad sites for some pretty good info about problems like yours in the Backwoods and how to fix them.

I hope my solution is helpful.

Aug 10, 2012 | Cars & Trucks

1 Answer

2005 ranger 3.0 truck starts pump runs presser good pump stops no presser after a few minnits


If you are talking about the fuel pump, you have only a few cheap fixes before blaming the expensive fuel pump. The fuel pump relay can overheat and kick out. A new relay could fix this. Autozone.com offers free fusebox layouts and wiring diagrams just for registering your truck with them for free.

Sometimes the horn relay will interchange with other relays. Look at the part numbers and use the horn to test the fuel pump relay. Or switch the 2 relays.

A fuel filter could be clogged and overloading the fuel pump. Put in a new filter.

After that, its a case of testing the fuelpump leads and see if the fuelpump is shut down.

I hope my solution helps.

Jul 16, 2012 | 2005 Ford Ranger

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We have a 2004 Ford Escape that had the fuel pump replaced at 29,000 miles, 2 1/2 years ago. We just experienced the same problem and our mechanic again replaced the fuel pump. The mileage is now just...


Hello, I looked at the Reports for TSB's (Service Bulletins) for your vehicle and there are none for this problem. There are a few things that you can try to replace that are not expensive. The fuel filter and some Relays.

I would suspect that aside from using additives to the fuel, there can be only a few possible problems. The fuelpump is either running when it should not or there is a ground problem. For the running when it should not, there are Relays for the fuelpump and I believe a PCM Relay which can turn the fuelpump Relay on.

These Relays have more than 1 set of contacts in them, and 1 set may work fine and the other set may be sticking or failing to make contact. Sometimes it is a problem like yours, an underlying long term problem that causes a part to fail over and over. What I feel may be happening is your pump is not shutting off when it should or something is grounding through your fuelpump because of a bad Relay.

The Power side of your fuelpump has a fuse, the Ground side does not. If the Relays stick and allow a different device to ground through the fuelpump, that could be your problem. I would try a new fuel filter and a few new Relays. They are in the Powerbox under the hood and should be labeled. They would be handy as backups as many are identical. Just mark them for ID.

Feb 08, 2011 | 2004 Ford Escape

1 Answer

Fuel pump not getting power checked fuses and relay and fuel pump is relay board bad


Check in the trunk on the drivers side for an opening in the carpet. There can be 2 switches and 1 is for the Air ride and the other is a fuelpump safety switch. The safety switch is called an "Inertia switch" and it has a push button for Reset. Just hold the button down for 3 seconds and it will reset.

Then turn on the Ignition and you should hear the fuelpump run for a few seconds. It should be ready to start. If the Inertia switch was tripped it is made to kill the fuelpump upon impact. Slamming a door or the trucklid can make it kill the fuelpump.

Jul 25, 2010 | 2003 Mercury Grand Marquis

1 Answer

1987 ford 150. Here is the problem. She will cold start and even run but once she gets warm up the fuel injectors stop pumping and she shuts off. You can tell it's not getting gas.


There are 2 possibilities that I know of. First, the module has a cold start circuit that switches to a RUN circuit after a temperature switch warms up. I can't say if the spark would stop before the gas does so if you feel this is a gas problem the module may not be your problem.

The second possibility is the fuel pump. There should be a fuel pump relay in addition to the fuse. Since it is not blowing the fuse, your relay may be cutting out. You may have a clogged fuel filter making the fuelpump overwork. It would help if you can get a pressure reading from the gas line.

Autozone and Oreillys do loan out tools with a deposit. They also scan your vehicle for free. Then you can test fuelpump pressure cold and hot.

May 16, 2010 | Cars & Trucks

1 Answer

You start the truck it'll run about 30 secons then stop running


check for any in-line fuel filter, if so that might need to be changed.
its possible your fuel pump is beginning to fail.
also check your coil to spark plugs

Aug 17, 2009 | 2002 GMC Yukon Denali

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