I have a 1992 Volvo 940 non-turbo that stalls while I am driving down the road at highway speeds. I will be driving along at 75mph and the engine will just stop runnning without warning. Everything else electrical is not interrupted. It will restart just fine after turning the key off and waiting 30 seconds or so. It seems to mostly happen when the car has been running for 10 or 15 minutes and is almost warmed up. Once it is warm completely it does not do this. It does this on both dry and wet days. I have replaced fuel pump, fuel pump relay, air and fuel filters, plugs, wires, ignition module, and distributor cap and rotor and it still does it. It is very intermittent and very annoying. Anyone have any ideas ?
2007-04-10 15:10:35 · 7 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Volvo
I assume it's an automatic. That sounds like everything that happened to my 91 740 wagon. Love those 2.3 litre 4 cylinder engines. Check all the wires (spark and ignition) again and re-visit the cap and rotor. Also check the overdrive solenoid and relay. Check the mass air flow sensor too.
Get an oil change as well. Al that cranking, the oil may have mixed with raw gas.
2007-04-10 15:45:43 · answer #1 · answered by ? 7 · 0⤊ 0⤋
The noise suppression relay suggestion is a good one (look for it on the right strut tower). Also, check the flywheel position sensor. The wiring may have degraded insulation and be shorting. It is on the top of the transmission bell housing close to the engine. Reach down between the engine and the firewall with a 10mm socket on a long extension to remove it.
Another possibility is the hall effect sensor in the distributor. It can develop an intermittent fault that appears when warmed up (may or may not be used depending on the ignition system in your 940)
2007-04-12 10:56:54 · answer #2 · answered by Roller 1 · 0⤊ 0⤋
crank position sensor will probably fix this. when it happens again if you can coast to a safe stop in a safe place leave ign on and go to diagnostic socket plug pig tail into socket #2 and press button for 2 seconds if red led blinks out code 131 [rpm signal missing you will have your answer
note 92 models do not have the hall effect distributor and while the radio supression relay is indeed a possibility it usally causes a no start condition rather than an intermittant stall good luck
2007-04-12 13:26:17 · answer #3 · answered by hobbabob 6 · 0⤊ 0⤋
That was a warranty item on our 2004 V70 it is was the "MAP SENSOR." Same thing happened to us. It is part of the emissions system I think. Also, you need to make sure you always click the fuel cap several times after putting fuel in your tank. The gas cap is part of a total system and if the pressure is not right the same thing you are having could happen.
2007-04-11 17:07:29 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i'm not sure no count if your engine has an overhead cam or not - if it does, then it sounds like the cam or crank place sensor is going undesirable. those sensors enable the engine understand if the engine jumps time, or if the timing belt breaks. on account that maximum overhead cam vehicles are interference engines (in different words, the pistons might hit the valves if the engine isn't timed properly) the sensors at cutting-edge close the engine down in the event that they think of it has jumped time. on account that they typically only type-of-fail (whilst the motor vehicle is warm) that's almost impossible to tell which one is the wrongdoer, so the main suitable guess is to alter one (usually whichever is the extra inexpensive one first) and notice if it stops, if not, then replace the different one - and according to risk take the 1st one returned while you're fairly broke. or you are able to replace them the two, and notice if that fixes it. If not, then it might have something to do with the gasoline injection equipment, yet that sounds precisely like the indicators of a crank or cam place sensor. reliable luck!
2016-10-28 09:42:42 · answer #5 · answered by ? 4 · 0⤊ 0⤋
look under the hood for two black relays one is called a noise suppression relay but it actually controls the injectors opening the other is the cooling fan relay but they are identical swap them around and see if that cures the problem
2007-04-11 02:30:36 · answer #6 · answered by Anonymous · 0⤊ 0⤋
check the injectors for dirt, fuel filter, condensation in gas tank. and last the turbo pressure could be off-set.
2007-04-10 15:16:13 · answer #7 · answered by Anonymous · 0⤊ 0⤋