Engine Performance problem
1996 Ford Probe 6 cyl Front Wheel Drive Manual 240000 miles
Car died a few days ago after just leaving work. 240k on car, but only about 80k on this engine. Background on the car is that it has been recently intermitently missing and stumbling when I accelerate especially under load and more often when it's wet outside. I checked a plug and there's bright blue spark. Fuel pressure is fine ~30-35 just after cranking. Plugs get plenty wet. VAF is moving smoothly. Throttle open and closes smoothly. No restrictions in the intake. Cat convertor is less than a year old. I pulled codes P0335 (Crank Position Sensor) and P1345 (Cam Position Sensor). I checked the connection to the Crank Position Sensor since it's known to be an issue and after multiple disconnects and re-connects, there's no change. I even wiggled the wiring in case there's a short/open. The resistance on the sensor is around 520 Ohms which is in the range. The crank position sensor is not loose either. The timing belt is fine and the timing marks line up so it didn't skip a tooth. The car will crank all day until the battery is dead, but not even a hiccup. I at least got a little sputter once the night it died - nothing at all now. I had the original distributor in the car with an MSD external ignition module and Blaster coil. I thought that perhaps I would get a no start condition with a bad cam position sensor. Since the cam sensor is part of the distributor, I replaced it with a distributor from another car. No luck - still sparks fine, but no firing. Stumped, I then replaced the crank sensor even though the one on my car checked out OK. No luck. I swapped the spark plugs for a new set at the same time and no luck. I've hit a wall with this car and about to have it towed to a graveyard. Any input?
I can get a 3rd distributor and try it if it's worth the effort. I don't know what else could be causing this issue. I'd expect to at least get the engine to cough when I have spark fuel and air. I suppose I should put a gauge on one of the cylinders and test for compression, but I've assumed it's there if the timing belt is not busted or loose.
By the way this car is currently parked at work and it's freezing cold outside and snow everywhere so it's not so easy to work on it.
have the same problem?
Monday, January 12th, 2009 AT 7:43 PM