[iwd18]

2004 Se-R Spec-V

So I was on my way to work and my car began to idle really rough and when I would press down on the accelerator the exhaust would sound like my car was a go-kart (sounded like mini-backfires). I took the car to a local shop (maybe tire kingdom, I think) and they pulled the codes and said I needed a new ECU (which obviously they quoted me some insane amount, like $1,500) so please let me know what I can do to fix this issue.

the codes are:

P0335 Crankshaft Position Sensor A Circuit Malfunction
P0183 Fuel Temperature Sensor A Circuit High Input

Now in the past I have changed the cam shaft sensor so I'm going to give changing the Crankshaft sensor a shot (I hope its this), but what is the other code about? How do i fix that (I do have a megan header and my SEL light has been on ever since so I don't know if it has something to do with that).

Now I saw the write up on how to change the Crankshaft sensor but I still can't find my sensor in my car! I tried locating it on the top but I couldn't see it, I'm going to try from underneath but does anyone have any specific way of letting me know where it is or by what other part in the engine?

Any help and/or suggestions is appreciated, as I am not a handy car person but I always try.

Thanks.

 

[ten-sec Spec]

crank sensor is easy to get to from underneath the car. reach up behind near where the transmission bolts to the engine and its around there somewhere.

 

[i68k]

double check your battery terminals for tightness, and good ground contact. check your voltage with motor on & off. also, give the wires to the ecu some wiggling while your car is idling normally, see if it stumbles.

there are also recalls for both of your issues, check your vin with a dealership to make sure youve received all the recalls, including the ecu reprogramming.

what are all the codes you have? the crank sensor is a common problem, but does come included with a recall if you havent done the recall yet.

to fix the ses light due to your header, you need to foul out your lower o2 sensor thats on your midpipe. you must have really bad gas mileage from not correcting your header and having issues with crank timing and fuel. you should check this out for your header fix:
http://www.b15u.com/sentra-specific...oulers-remove-ses-light-o2-sensor-spacer.html