Question about 1993 Volvo 940

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93 volvo 940

Fuel pump runs when bench tested
has power only when when cranking cannot hear pump running in tank
tried used relay no different

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Did you check your wiring, make a continuity test on the wiring,
clean all your ground wiring.
ruamado@gmail.com

Posted on Jun 29, 2008

  • ruamado Jun 29, 2008

    I forgot to mention worn pumps work well when bench tested.

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Volvo 940 does not starts. Starter works and turns, battery has charge. Changed a fuel pump, it helped for couple weeks. Then same thing happened. Cleaned fuel relay. It also helped for couple days but...


check your pump if you replaced the pre pump in your fuel tank you must check the seal .remove the plastic ring check the base at the entry to your pump is flat .it may be leaking air due to your seal not seated in correctly.

Nov 27, 2012 | 1994 Volvo 940

1 Answer

My car not getting fuel 94 volvo 940 i have replaced fuel & fuel relay i need help


Does the pump run? If not does the pump get power for 1 second when the key is turned to run position? If it does have power then the answer is very obvious, the pump is defective inside the fuel tank or on the rail which ever you have.

Aug 17, 2012 | 1994 Volvo 940

1 Answer

Whole fuel system


The main fuel pump in a Volvo is really well built and rarely fails (Bosch simply makes great fuel pumps). A good survival trick if you think a main fuel pump might be bad... give it a quick tap with a wrench. For best results, if possible, tap the pump when cranking the engine (while power is going to the pump). If the pump is bad, often the tap will make it come to life and it may stay running until you shut it off. This trick can get you back on the road and get you home in an emergency. If it's a bad fuel pump relay, this will NOT work as there will be no power going to your pump. If this is the case, you might try the below relay bypass "jump" trick to get power going to the pump. TESTING YOUR FUEL PUMP
How to "JUMP" the fuel pump circuit at your Volvo 240 fuse panel:The fastest method to make the main fuel pump run (bypassing the Fuel Pump Relay) is by jumping two circuits at the fuse panel (left side driver's kick panel).

You can make a jumper from a wire with stripped ends or even a straightened paperclip. Jump the circuits on the right side of the fuses for best results
For a 1979-84 240, jump fuse circuit #5 to #7.
For a 1985-93 240, jump fuse circuit #4 to #6.


If the main fuel pump doesn't begin running when jumped (you should definitely hear it humming), you either have a faulty fuel pump or faulty wiring to the pump (bad wiring is really common under an old 240, near the pump). This test of course assumes your battery is good.
If one of the fuses blows during this test, the pump circuit wiring is shorting to ground somewhere between the fuse panel and the pump.

thx



Jan 18, 2012 | 1984 Volvo 240 Series

1 Answer

My volvo want stay crank fuel pump comes on replaced it shop telling me my fuel pump housing needs replaced had that tested its o k what about fuel pump relay


if the fuel pump is new and the fuel filter then you will need to check the fuel pump relay if its good
then the ECM would need to be replaced. thats the computer.

Aug 28, 2011 | 1992 Volvo 940

3 Answers

No fuel to the enging on my 94 940 volvo.


turn ignition key go back of car you should be able to hear a humming sound under neath car if you don't hear anything your fuel pump is bad or disconnect fuel line from injectors and try to crank car if the area is wet pump is working

Feb 24, 2011 | 1994 Volvo 940

1 Answer

I have a 1994 Volvo 940 Turbo. Just lately it has been hard to start. It will crank but won't fire. Sometimes it fires but won't stay running. At first it was doing this only when the engine was warm, but...


Spray some gum out in air flow sensor and see if it starts up.
If it does you need a new fuel pump. To confirm look for schrater valve on fuel rail, put a rag around it and wear eye protection. Push valve and see if fuel shots out while the vehicle IS NOT RUNNING. I fuel does not shoot out you have no residual pressure and need a new pump.
The other thing is to place key in ignition and put it to on position you shoulsd hear a buzzing sound from pump.

Aug 19, 2010 | 1994 Volvo 940

4 Answers

Fuel is not flowing to engine, changed fuel filter but still not running.


Did the engine just quit going down the road? or was it parked and then would not start? Did it have fuel before you replaced the filter? Did you check all the fuses in the fuse box. I think 2 of the fuses is marked ECM, check both Fuel pump relay? swap it with another relay in the fuse box. You should hear the pump come on for 2 seconds when you turn the key on, do you? If not as you are cranking the engine have someone rap on the bottom of the fuel tank with a mallet or block of wood, or hammer and see of the pump will run. If that gets it running, the pump is bad and will need replacement.

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940 GL Stall problem


crank sensor problem

Jun 16, 2008 | 1992 Volvo 940

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