My 240's performace is degrading, and I haven't even had it on teh road for a week. Been trying to run down a problem, but no luck.
SYMPTOMS- it will start, rev to 2000 rpm, stay there for a bit, then either die, or when warmed up a bit the RPM drops from teh 200 point to about nil, baerely running, then revs agan, then drops, etc. SOmetimes it "stabilizes at a round 100-1150rpm, and other tims bumbles around 200rpm or so unless reved up a little. Revving the motor seems to cause it to get lean, and repeatedly depressing and releasing the motor gets it dunning to higher speed more smoothly, but it is running rough. O2 sensor reporting the mixture incorrectly?
It is not in "limp" mde. I verified that by disconnecting the AMM and starting the car. it ran in limp mode, and you could smell the richness of the mixture. At that point it actually did set a "CHECK ENGINE" light and post a 1-2-1 code. I turned off the car, reconnected the AMM, cleared the code, and it was back to the original poor running car, but it has not been posting an AMM fault (as it had been in earlier posts).
I have checked the brake booster, and it holds vacuum for (literally) hours. Cleaned the AMM and its contacts, cleaned the IAC and its contacts, cleaned the contacts on the throttle position switch, cleaned the.. well you get the idea. I also did the two tests on the AMM as described in the Bentley.
At this point the frustration is such that if I could get it to drive decently I would take it in to the mechanic I live about 30 rural miles away).
I guess I am venting as much as looking for ideas... I suppose I can open the throttle body and check the shaft seal, and I could do a compression check just to make sure (but there is not excessive blowby or crankcase pressure)..
I did spray WD-40 about (around teh injectors, intake, throttle body, etc., but found no leaks.
Computer coolant temperature sensor? There are no errors for it posted. It is a bitch to get to and get out.. :-/
Arghhh...... I want my car back!
__ __ Randy & \ \/ /alerie's \__/olvos '90 245 Estate - '93 965 Estate "Shelby" & "Kate"