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I have a 1992 Volvo 940GL with 225K miles that has started randomly stalling out while driving at highway speeds. So far there is no correlation to gas level in the tank or weather, it does it on sunny days as well as rainy, and with full tank. Fuel pump, plugs, wires, distributor are all new and have had no effect. It immediately starts again when the key is turned off and then restarted. Sometimes it does this several times per day, sometimes it won't do this for several days or even weeks. This is very frustrating and every time I bring it to a garage it is running fine and they can find nothing wrong. Anyone have any ideas ??

2007-01-09 18:34:11 · 7 answers · asked by Anonymous in Cars & Transportation Car Makes Volvo

7 answers

I have owned over 20 Volvos and have had this exact same thing happen on 3 of them (all 700/900 series). This doesn't include the 4 I have serviced with this exact issue. Open the airbox and remove all that crappy foam glued inside the lid. After so many years, they begin to disintigrate and flake off - usually in assorted chunks that plugs up the air mass meter (AMM). This effectively suffocates the car and it stalls. Wait a minute and the pieces fall off, clearing the AMM. The foam is semi-pointless so you won't be losing anything by eliminating it. Also be sure to remove the AMM and clean the screens on both ends. Contact cleaner works great for spraying everything off as there's a filiment inside (that measures air content) that is very thin and delicate.

Another very probable cause is the fuel injection relay. You might have one sticking - then when the key is turned off, it resets itself and acts normal again. They had this issue big time on the later 200's, which, depending on the FI system/year, had the same relay as your 940. You should have the LH2.4, which was the same relay as the later 200's.

2007-01-12 15:27:28 · answer #1 · answered by Verizonsuxx 2 · 0 1

Greetings -

I used to have a '87 740 with 225k, and a '89 740 with about 100k, and both would stall out (once in a while) - usually after coming to a rolling stop. Once I hit the gas, it would stall. It was dangerous, as sometimes it would stall right in the middle of an intersection.

I took the first one all over the place looking for an answer, and noone could help. Everything is fine they told me.

Solution? I read the owners manual, which clearly states to run 89 octane gas in the car, and I was using 87 octane.

From that day forward, I used 89 octane - the stalling problem went away. Sometimes I even gave it a jolt of 93. Anytime I used the cheap stuff in either car, it would start stalling out again.

You might also want to check out brickboard.com - lots of people with similar Volvos there.

Check your owners manual to see what type of gas your Volvo needs. Good luck.

2007-01-11 23:31:36 · answer #2 · answered by John L 1 · 0 1

Start with the easy stuff...filter. Then make sure the pump, although new, is functioning properly. It sounds suspiciously like vapor lock but that doesn't usualy occur in FI systems. The expensive part is the mass air sensor or whatever Volvo calls it on the 940. It could be something as simple as dirt. I do think your problem is fuel related since electronic ignition components are either good or not, no intermittent failures.

2007-01-10 02:07:05 · answer #3 · answered by Arthur O 5 · 0 0

your 940 has a crankshaft position/speed sensor at the rear of the engine and on top of the bell housing it senses cutout windows in the flex-plate this is probably what is bad to diagnose use diagnostic connector box plug pig tail into socket#6 and press button for 2.5 seconds and watch L.E.D. it will flash out a code [3 digit] and most likely # 214 [speed sender signal missing of faulty] diagnostic socket #2 is for fuel injection #6 is ignition
system pass code is 1 1 1 for both systems [good system once you get used to it.

2007-01-12 11:27:09 · answer #4 · answered by hobbabob 6 · 0 0

The cap and rotor and plugs all wires, Spark is intermittent when the car heats up and stalls.
Check the fuel pump relay too. Sometimes they cut out and the car does not get gas which makes it stall.

2007-01-10 03:12:19 · answer #5 · answered by ? 7 · 0 1

It has to be the fuel relay, its located in the fuse box just in front of your gear or under the stereo. You need to reach out as the location a little difficult to reach.

2016-03-27 10:05:55 · answer #6 · answered by richard 1 · 0 1

If its an automatic transmission then I would say without a doubt its the lock up torque converter.....

2007-01-09 21:01:25 · answer #7 · answered by lemans81 3 · 0 1

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