Mechanics

NISSAN 200SX RPM PROBLEM

1998 Nissan 200SX • 154,000 miles

I recentlhy did a fuel injection service cleaning, through the intake plenum and in the gas tank. When I start the car when the motor is cold it idles fine but when I start to drive it acts like not gitting enough fuel. After a couple min it doesnt do it any more then when its wormed up and I come to a light I push in the clutch and the rpms jump up and down a couple times then goes to about 800 rpm. Also when im at idle I push the clutch in and push on the gas the rpms will start to drop like norm then it will jump up to 1500 or 2000 rpms then go back to 800 rpms.
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Jonp069
March 24, 2013.



Adding injector cleaner to the tank has little or no effect on injectors. Direct injector cleaning the the only way to clean them correctly.

Check for vacuum leaks. Make sure the passages for the idle air control are clean.

Roy

ASEMaster6371
Mar 24, 2013.
Thanks I have checked all the vacuum lines no leaks I have tryed to find where the iac is there is two different kind of things there and I cant tell whitch one it is.

Tiny
Jonp069
Mar 24, 2013.
There is a tps sensor and the other is the iac motor.

Roy

ASEMaster6371
Mar 24, 2013.
Thnaks I appreciate the help

Tiny
Jonp069
Mar 24, 2013.
Good luck

Roy

ASEMaster6371
Mar 24, 2013.