Car starts fine but sometimes stalls when idling or first putting in gear. Code 506 came up when a friend tested it . Is that the MAF sensor?
No is AIC dirty throttle body try to clean,could be PCV valve,vacuum leak,
SOURCE: stalls when put into gear
Its possible it could be other things causing the problem, but seeing as you've checked most of the likely causes, it is most likely your Torque-Converter. The lockup clutch in your Stator-Fan located inside the Torque-Converter could be siezed, causing the car to stall.
SOURCE: idle too high +goes higher when put in gear (manual transmision
IAC valve problem. Nissan has a updated harness (with one way diode inside of the harness) to prevent backfeeding for the IAC valve and a new IAC valve also gets installed. That's where I would look. IAC valve or "idle air control" valve.
SOURCE: Vibration when in gear, and stalling.
The problem is the torque converter solenoid. I had it happen on my 94 Cavalier a few years back and was a cheap fix at the local car mechanic. What happens is the transmission warms up and hits a certain speed where the solenoid engages, but then it sticks and won't disengage until it cools down sufficiently. When it sticks, it causes the car to shake when slowing down and will snub out the engine if you come to a stop.
SOURCE: car is stalling and idleing irradically.
I Would Suggest That You Complete A Engine Cylinder Leak Down Test.....(not A Compression Test But A Leak Down Test) this will tell you if you have internal problems....possible worn rings or a burnt valve(s) I would use a smoke machine to check for vacuum leaks also. Good Luck
SOURCE: 1995 CHEVY VAN 20 305 WONT IDLE
Check your fuel pump presure. Pump is in the tank. Also try and loosen the fuel cap, the tank vent may be stopped up.
Engine stalls, car stalls while
starting, vehicle stalls while starting, Engine stalls and dies, Car stalls and
stops,
http://alltypesofpartsreplacing.blogspot.com/2012/12/engine-stallscar-stalls-while.html
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These will help.
Thanks.
Engine stalls or RPM
fluctuates at idle up and down or dies near idle.
This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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