Is this a common replacement for a 2007 2.4 motor with only 40K? And to go into great detail for anyone else that might run across this problem...
2007 Jeep Compass with just over 40,000 miles. My wife said it threw a CEL and the "low traction" light at the same time when she parked at work the other day. (Assuming the low traction light indicates a "limp home" mode?) She got it home after work, and while I was looking it over it suddenly died on me while idling, as if I had turned off the key. Started it back up and took it to Autozone for their OBD tool which spit out a P0339 (crankshaft position sensor) and a misfire code. I'm assuming the misfire would have been caused from the crankshaft sensor issue. I pulled the battery cable to reset the ECU after I got home, expecting it would throw the code again if there was really a problem.
Wife and I both drove it the next day with no problem. Then this morning the expected happened. It died on her in the parking lot at work, and threw the CEL and low traction light just like a few days prior. I went to drop her my car and get the Jeep home. It died on me several times while just letting it idle in the parking lot but once driving never died. Got it home with no problems, although it was obviously in a "limping home" sort of engine management/control state as it lacked power and acted a bit flaky.
Knowing it's an $8 part I first I called a smaller local garage (not a dealer) which has a very good reputation. They said for the all wheel drive model, their book states 4 to 5 hours labor, and sounded like it basically requires "extreme digging" to get to. (Multiply that by about $90 per hour... for an $8 sensor.
) He said the front wheel drive model quotes only about 1 hour, and is much easier to change... go figure.
So then I called the closest (and largest) Jeep dealer. As expected I was put on hold, told they would call me back, didn't get a call back, and had to call them back... etc etc. Everything I'd expect from your typical large dealership. However they firmly quoted me only 1-2 hours labor (confirmed for the all wheel drive) and $24 for the sensor. So I booked an appointment for next week. We'll see how this turns out I guess...
This is after replacing the ball joints and tie rods a few weeks ago on this thing. Trade-in is starting to sound tempting.