Hello friends- A 240 white belt here has been unsuccesfully trying to find the culprit behind a very rough idle. I began the quest of trying to clear the lamda codes for fuel economy by replacing the MAF about four years ago. So far, so good. On my way home from a road trip, I noticed mileage betwee...

thanks again for the sage advice, and same to you with your 244!

i also happened to bring along my bentley manual, which has a description of the CPS job and i found an OEM from voluparts marked down $60 that's on its way by friday.

i got EZK codes for knock sensor and ECT (replaced ECT 7,000 miles back), and ECU codes for ECT and the idle and load richness. the distributor looks good, as far as i can tell.

you were correct on both counts volvolugnut! the wagons harness has snapped apart, and after i rigged a spark plug to a long dowel so it would stay in a place i could see through the bonnet's gap, there was neither sight nor sound of spark, which would certainly cause the fuel from the jumped inline...

ok, i'll report back when i can find a helper. not sure if this information is useful, but there were a few other electrical/mechanical symptoms ongoing beforehand. namely reverse lights, rear wiper, and directional indicators were out, but i have brake lights and hazards, and i checked the engine c...

am i correct to assume that i have fuel, air (no leaks or clogged airbox) and most likely compression but no spark which is keeping the manual jump on the fuse from giving me a start?

fair enough, my name ain't paul getty either! just sort of running out of ideas and the only other thing i could think of was the crankshaft position sensor which we could probably say the same thing about. unfortunately i am in a situation where i am alone, miles down an old country road in florida...

update- removed seats and carpet to clean ground, still in a no start with crank. still getting power to the pump by jumping fuses, but not able to get running anymore. talked to a tech at a volvo dealership and he suggested replacing the ignition switch, does that sound like it's worth a try?

thanks again, will give it a try in the morning light. sorry to ask such a basic question, but i have not done this procedure. does gaining access involve removing the square dash panel in order to peel back the upholstery where i will find the ground?