Car is running rough at idle. Not sure where to start. What could be the problem?


Asked by Mar 01, 2014 at 07:55 PM about the 1989 Volvo 240 DL

Question type: Maintenance & Repair

At idle it while surge and does not settle down even when warmed up.  Appears to be giving the motor more fuel that it needs.  With excess coming out of the exhaust. Acceleration lags  and is very sluggish.

4 Answers


How long since your last major tune up?


Been a while but really don't what to spend money on a mechanic when I got the car for free.

1 out of 1 people think this is helpful.

Ok if you are running old/bad spark plugs, plug wires, fuel filter, air filter, dist cap, rotor, ect(all other items for a tune up) (and that might very well be all that's wrong with it) The vehicle will not operate properly.

1 out of 1 people think this is helpful.

So there is no possiblity that it could be a mass air sensor or the TPS. Tune up parts installed still has same problem and over 100+ in parts. Any other ideas? obviosly this isn't the first car I have ever wrenched on but first with the fuel injection like the volvo.

2 out of 2 people think this is helpful.

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