Question about 2001 Nissan Sentra
Ive replaced the harnes both crank sensors the computer andthe car will run but rims rough and is still throwing the crank posision sencer I can't get rid of the code? Please help I've dumped 2500$ into this and got no where
The car only blue books for about $3000. I hate to suggest it but financially it may be better to cut your losses on this one. A used engine with 7000 miles on it for this car could have been purchased for $1200.
The code that you are getting does not necessarily mean that the crank sensor is defective. Those codes are to be used as symptoms only. If the crank sensor is bad the car won't run at all.
If it's running rough you need to check the health of the ignition system, fuel system, and the timing.
Starting with the easiest to the more difficult.
1. Pull the spark plugs and read them. Are they fouled/damaged/wet/burnt?
2. Check the engine compression. Is the compression low?
3. Check the timing marks. Did the timing belt slip off a tooth with the cam gear? Is the timing belt worn out? Make sure these marks line up with what your manual shows.
4. Check your fuel pressure with a gauge. Does it match what the manual states it should be?
5. Is the coil pack weak, out of tolerance? Check it with a multimeter, make sure the ignition wires are in good shape. If you've never changed them, this would be a good time.
If you check these things you should find the problem...throwing parts at it till the problem goes away is the most expensive way to fix it.
Posted on Nov 27, 2012
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Posted on Jan 02, 2017
cerebral_eni: The crank position sensor is located at the back of the engine block just below the cylinder head. It actually projects into the bell housing and reads the teeth on the flywheel where it references TDC for #1 cyl and RPM's of the crank. It's a "Hall effects generator". Unless you are into electronics and have a lab scope to look for a square wave pattern, I will continue with my other input.
Nissan has a recall campaign on the crank angle sensors.
The campaign # is 07V527000:ECM update for stalling;
NHTSA07V527000 NOV 07,
The symptom was brief malfunction of sensor causing the engine to quit running which could potentially put the vehicle at risk for a collision. The sensors would ultimately fail. There was also a voluntary recall on the reprogramming of the ECM's due to stalling problems. TSB# NTB07-081, Campaign ID#R0712
I hope this information is of some assistance to you. You may be able you get your car repaired under warranty! Good Luck!
Posted on Apr 08, 2009
I would have the charging system checked for over-voltage and AC ripple. There maybe a hidden wire harness problem if the charging system is okay. Wiggle test the wire harness while the engine is running to help locate the problem area. That is way to many parts replaced.
Posted on Oct 28, 2009
Are you sure it was the crank sensor that you replaced? The cam and crank sensors look identical. Was the engine hard or slow to start? If so, this will sometimes set this code.
Posted on Nov 09, 2009
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