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jerking problem 900

hello there,

I own a 1994 model 940gl volvo without turbo and ABS. Currently I am facing a problem with my volvo and I have changed couple of stuff and yet the problem is not solved. The problem with the car is the car starts to jerk after waiting in the traffic jam for a long time. The rpm starts to fluctuate up down between 750 to 500 and couple of times the car engine has died in the midst of a traffic jam but on a rainy day, the car does not jerk eventhough i am stuck for couple of hours. So far i have changed plug cables, oxygen sensor that is near the air filter and many other things. Please advise me and if there is any queries please e mail to me.

Regards
dev








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jerking problem 900

I think that the "OxygenSensor" you replaced was actually the "Inlet Air Temperature Sensor" if it was near the air filter. This indicates a "Regina" fuel injection system (as opposed to LH system).
I have the Regina Service Manual, and may be able to help, but need clarification of symptoms...

"...the car starts to jerk after waiting in the traffic jam for a long time." Do you mean before you start to move the car? Or after you have begun to move?

By "jerking" do you mean the car hesitates-moves-hesitates, etc.? Or are you referring to the 750 to 500 Rev fluctuation?
"....The rpm starts to fluctuate up down between 750 to 500 and couple of times the car engine has died in the midst of a traffic jam..." Again the question: Was this with the car NOT moving?

"...but on a rainy day, the car does not jerk eventhough i am stuck for couple of hours." This problem does not occur in wet weather?

So far i have changed plug cables, oxygen sensor that is near the air filter and many other things. (What "other things" have you changed?)



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jerking problem 900

Not sure what you mean by jerk, perhaps your talking a hesitation, if so, the rpm pick-up at the flywheel might be a cause. In my car the wire was chafed causing intermittant hesitations. Also, for info, the oxygen sensor is at the catalytic converter on your car, not at the air filter.







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