|
I've experienced it, but much more subtly in the Volvos, and about the same as your experience in my former 1985 RX-7 GSL-SE (fuel injected by a NipponDenso built, licensed version of the Bosch Jetronic system).
My guess is that there is a problem with sensor drift in these older cars. That is the numerous sensors that the FI computer uses to monitor the engine, 15 in the case of the RX-7, are all changing the signal they provide to the FI computer as they age. And, the changes in the signals are not all in one direction together, they are all over the place, so to speak. This confuses the FI computer, and results in the rough running until the engine warms up enough for the computer to get a clear handle on the condition of the engine.
Of course there could be a bad sensor or sensors, like you mention. If your car has a Bosch computer, you can make it run through a test of the sensors to try to isolate the bad one. I think the Rex/Regina cars can do this too, but I'm not sure about that. Check the FAQ for more info.
--
1955 Human, Scott; 1991 745 Turbo, Brunhilde; 1990 745GL, Snuggle Bunny
|
