20 Most Recent 1991 Volvo 940 - Page 2 Questions & Answers


Have you tested it to see if power is present at the control switch? Do this first.

1991 Volvo 940 | Answered on Jun 06, 2012


check the crank sensor wiring harness. pull on the wires a bit, to see if it will crank over. it should be against the firewall in back of engine. its a 3 wire connector. they are prone to fail.if wire harness is bad, replace it. hope this helps!!

1991 Volvo 940 | Answered on May 26, 2011


It is variable, depending on service, but nearly always 200k miles plus.

1991 Volvo 940 | Answered on Jan 26, 2011


Check the sensor that is connected to the gearbox.thank you

1991 Volvo 940 | Answered on Nov 15, 2010


low brake fluid i think

1991 Volvo 940 | Answered on Nov 03, 2010


what were the specific inspection details like Co, 02, CO2 and NOx readings?

furthermore, have you done any maintenance like fuel filter, oil change and spark plugs?

1991 Volvo 940 | Answered on Sep 22, 2010


OK the battery in good charge should be at 12.5 volts ( as measured with a voltmeter across the terminals) When the engine is running you should expect the reading to be about 14 volts. Put the lights on ( a load on the battery) and the voltage can go as high as 14.5v. Switch everything off (I mean everything..radio etc) and disconnect the negative terminal to the battery. Now put the meter in ammeter mode and measure the current between the negative terminal and the cable that is now disconnected. It should be really very low current (milliamps at most), switch on the lights to show ourself what that current drain looks like. If the residual current looks significant take out each fuse in turn and return it noting on pen and paper any drop in current when the fuse is out. This process will identify the circuit that is draining the battery. Check the wires and junctions in this circuit for shorts etc. If its lights try removing bulbs until the current drain stops If possible leave the fuse out over night on this circuit and see if this effects the battery's ability to charge and stay charged.

1991 Volvo 940 | Answered on Aug 30, 2010


Could be bad battery cables, they wear out, too.

1991 Volvo 940 | Answered on Aug 25, 2010


My volvo 940gl did exactly the same, it turned out to be the fuel injection relay. I changed it and the car ran perfectly happy for the next 2 years until I sold it.

1991 Volvo 940 | Answered on Jun 30, 2010


if the fuse is good i could be the switch itself take out one of the switch and check wires with volt meter

1991 Volvo 940 | Answered on May 07, 2010


The fulerail has welded "fastenig ears" usually one of thease welds causes material fatigue and eventually cracks. exchange the pipe. i seem to remember that it is not to expensive.
I seem to remember that it is a metric pipe so you van always fit a cutring fitting plug to seal it in the end.

1991 Volvo 940 | Answered on Apr 05, 2010

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