Recently my 94 SL2 automatic with ABS has been unable to start. The problem appeared once, went away, and then reappeared for good a few days later. The problem is that the car will turn over and immediately die. The engine appears to fire for a few revs, and the tach deflects, but will not continue running. I ran some tests based on the Chilton, and replaced the IAC based on the faulty specs given in this book. This did not help, so I performed some half-cocked diagnostics and replaced the crankshaft position sensor as well. No codes in the PCM. My nose tells me that fuel is getting in, and my ears tell me that the fuel pump is moving. Spark is good at the plugs and coil towers. The intake tract and filter is in tip top shape. I clamped off the canister purge line without effect so the purge solenoid doesn't seem likely. The EGR solenoid tested good as well. After spending a few evenings lying on the cold concrete and testing parts in the dark, I towed the car to a mechanic who ran his scanner on it and has determined that the PCM is bad. I am suspicious of such a claim since the PCM is being blamed as a result of a lack of other problem rather than a positive test on PCM performance.
ideas? The dealer is quoting ~$600 for a new PCM and re-program. Is the reprogram needed? I can install the PCM myself and get a cheaper one as well as long as the reprogram is not required. It is getting too cold to keep riding my bike!
Thanks
-Jon