I have got the same p1390 code again. However the idle is smooth as hell and it drives fine. This is racking my brain :wallbash
Ive been through 4 crank sensors. On sensor #3 the code went away for a few days (and trips to Tampa), but it had oil blowby, so I returned it to Autozone and got a crank sensor from Napa. It took 30 miles to throw a 1390. I reset it and 40 miles later got the code back. Today I hooked it up to a SnapOn novus (or whatever its called) and it monitored the car for like 20 minutes. It said that besides running a bit rich, everything is fine. It also is throwing a 0442 (small emission leak, but thats moot). Ive read that a crank sensor thats not reading right will cause a "sporadic, severe loss of power", which I have as well.
So yeah we cleared the code with the snapon and it came back within 2 minutes. The tool said something about using the MUT II tool to relearn the crank and cam. I have over 800 miles on it with the new belt,the ECU usually relearns these type of things, it relearned the idle by the 2nd day...
Where do I get another crank sensor from, coz although driveability is not affected at all except for power loss, I dont like that code, it makes me nervous...
Here, we have Autozone, Advanced Auto, Napa, Carquest Pep Boys and of course Satan
Ive been chasing this ghost for a about a month now...

I hate buying important things like that from an aftermarket dealer. Satan may be overpriced a tad, but you get what you pay for...

P1390 means your timing is off.

Originally posted by DarkOne
P1390 means your timing is off.

Yup, cam sensor out of sync with crank sensor, there's only a 3 degree window before it complains

Exile Racing Technologies
http://www.exileracing.com
Go that way, really fast, if something gets in your way... turn.