I just bought a manual transmission 2001 Dodge Neon SE 4-door with 139,000 miles. About 15 min after driving it off the lot the check oil light came on. Shortly after, if not at the same time, the check engine light came on. The car sounded and felt like it was running fine. I checked the oil which looked clean and at the appropriate levels. The engine was clean with no obvious signs of leakage. No puddle of fluids under the car.
When was the timing belt changed? It is IMPERATIVE
that you determine if or when
the timing belt, the timing belt tensioner and the water pump was replaced. If it has not been serviced recently, you run the danger of breaking or stripping teeth off of the timing belt - thus causing some bent valves and a expensive repair.
Clear the codes and drive the car to see if the code returns within a few miles or minutes.
Read the FIRST
line in my sig...
When I checked the codes with my OBD2 scanner I got the following message: - - - - - P1390 - Manufacturer Contrl. Ignition System or Misfire - - - - I have no idea what this means or where to start.Thanks!
That particular explanation of the P1390 code is not a Chrysler definition. It is a poor generic attempt to tell you that there has been a fault with the cam position signal.
That (or those) generic fault codes could include - but not be limited to - these Dodge / Plymouth / Chrysler specific code definitions:
P1390 Timing belt skipped 1 tooth or more. (sometimes called "Code 11" on the 1st gen cars)
P1391 Intermittent loss of CMP (C
osition sensor) or CKP (C
osition sensor) During Cranking
No crank reference signal @ PCM
P3298 Misfire adaptive numerator at limit - CKP sensor target windows have too much variation.
My sneaking suspicion is one of two things:
1. The timing belt was replaced and the CEL was thrown because the new cam position was not within the allowed range (too much variation) from the position of the worn belt.
If you clear the code and it does not return SOON - you can pretty much discard #1 as a factor - not totally discard, but there is a high probability that it is not the problem.
2. OR - the more likely scenario - and the reason for a THOROUGH VISUAL INSPECTION
- - The mere fact that the oil pressure light has come on for no apparent reason - and the loss of CMP at the "same" time - but the engine continues to run well - makes me think that there is a intermittent wiring issue in that area of the harness. This is not unusual on the 1st gen cars. Is it also a problem on the 2nd gen cars? I do not know. Someone on this board will know....
Do a thorough visiual inspection of the engine harness in the area of the cam sensor, the coolant temp sensor and the oil pressure sensor. This area of the harness is most likely to suffer damage where it goes around the rear corner of the head on the drivers side of the head.