First off the car is a 2003 spec v CAI and exhaust thats it one day the intake filter came off then the rpm went erratic. I put the Filter back on unplug battery, car still boggs at high speed and feels like it HESITATES to go I opened the Intake TOOK OUT Throttle body. JUST for visual inspection pluggs and coils are fine also. Turned on car CHECK ENGINE LIGHT CAME ON! now idles at 1500rpm I went to a performance shop check code saying the throttle sensor is fried. Is there any other way other than buying a 600dollar part. PLEASE HELP!
If it's a code P0507. Try doing the Idle Air Volume Relearn.
1. Perform "Accelerator Pedal Released Position Learning".
2. Perform "Throttle Valve Closed Learning Position".
3. Start engine and warm it up to normal operating tempurature.
4. Make sure all prep items are completed before moving on.
5. Turn ignition "OFF" and wait at least 10 seconds.
6. Confirm that accelerator pedal is fully released, turn ignition switch "ON" and wait 3 seconds.
7. Depress and release the accelerator pedal 5 times within the next 5 seconds.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approximately 20 seconds until the "SERVICE ENGINE SOON" light stops blinking and turns on.
9. Fully release the accelerator pedal within 3 seconds after the SES light goes off.
10. Start engine and let idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure that idle speed is within specifications. (700+/-50 RPM unless you had it altered.)
13. If idle still doesn't work right, curse and spit because you gotta start over. Check the following 3 before starting over: throttle body is closed when the vehicle is off, PCV works in stock form, and no intake manifold leaks
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So. . . Your face is dumb!
Last edited by saint0421 : Oct 19th, 2006 at 12:55 PM.
Thanks for the great info will try to do this tonight i tried the 10 seconds on and off 1 sec that didnt . I guess there was more to the instruction thanks again will update with the outcome!!!!
I did the Re-learn and everything as directed the Check engine light blink and everything. IT still didnt go back to normal idle still idles at 1500rpm, now i went back to the shop got the codes again the CEL throws 1st-code=P1122, 2nd=P0507 3rd=P0223. 4th=P0123, and the last one is still P0507. If you can Help me out on this that would be great. note I DID the RELEARN on it and im thinking the First CODE is still making it idle at 1500rpm.
I just looked around and checked I found that P1122 is TPS Inconsistent with MAF sensor low voltage.....does this mean replacing it then resetting the car ecu should fix all the other problems......note this is the first code showing up also....
Clear your codes before attempting the relearn again. Also, use your VIN# on the nissan site to check for your recalls. I remember hearing recalls for 2003 spec for the foam around the ECU and/or the CPS. I could be wrong but it can't hurt to check your recalls.
THanks..for a update my Check engine is still on....good thing the idle is now back to normal im definitely thinking the MAF is messed up from all the vibrations from the intake when launching the car!!!!.......
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2003 Nissan Sentra Spec V
CAI
FULL Cat-Back Exhaust
THanks..for a update my Check engine is still on....good thing the idle is now back to normal im definitely thinking the MAF is messed up from all the vibrations from the intake when launching the car!!!!.......
i seriously doubt you MAF sensor would become defective by the "vibrations" of launching your car... especially if the code says that it's low voltage... you might want to check and see if you have a pinch on the line and are shorting a wire...
Linear Mode
