About Roger Patricio Expertise Can answer all Volvo car questions. European and Canada spec cars are different but I can try to help you.
Experience I am a Certified Volvo Tech at in Independent Volvo Repair shop. I grew up around Volvos and decided I wanted to do it professionally. I worked at the dealer for about a year then I went to work at an Independent shop which I have been with for 10 years.
Question i have a 1994 Volvo 940 turbo after a 30-60min drive when coming to an idle the vehicle will run rough, i have done the usual tune up, and have found that when the rough idle concern happens by removing one injector plug at a time i found the first injector doesn't change the concern rough running, when removing all the other injector plugs at a time, the vehicle wants to stall run worse, so is it the injector or possible the wiring harness?
Answer Joseph, this sounds like an ect sensor issue. It may be overfueling when it gets hot. Did you replace the dist cap, rotor and wires? What brand did you use? Ive seen when junk parts are used other than bosch, crazy stuff happens. I would do a compression test on cylinder 1 and 2 also. Roger
