Question about 1990 Nissan Stanza
My car starts, but you have to hold the pedal down to keep it from stalling out, and when you put it in gear-it stalls out. I was told it might be my air flow sensor.????
Clean out the throttle body if you get a chance, You might be surprised how dirty it gets in there.
Try looking below the throttle body mounted to the intake,you may have to remove the snorkel that goes between the throttle body and the air filter. I believe that's where your EGR valve is and it may need to get cleaned too or replaced, you might also try removing and cleaning your idle air control.
The idle air control is mounted on the passenger side of the intake,at the very end of the intake. make sure the engine isn't hot when you remove it because two of the rubber hoses have coolant from the engine in them and if it is hot it could spray you. I sprayed CRC throttle body cleaner on mine and it cleaned it up pretty good. also be careful not to turn the adjusting screw on it as you could make your idle worse.
You can check the EGR to find out if it is bad or plugged,with the engine idling reach under the body of the EGR valve and push up.if it is working the engine should try to die when you do this. I would also check to make sure there are no cracked or broken vacuum lines.no cracks or leaks in the snorkel going to the throttle body and with the engine running tap on the top of the maf sensor with your knuckles,if the idle changes than your maf sensor is probably bad. you can unplug the wires from the maf sensor with the engine running and if the idle doesn't change then its bad. These engines are temperamental,for instance they have to maintain vacuum in the engine to run properly_something as minor as the seal on the oil cap allowing air into the valve cover will make it run poorly. Have you checked for any codes or is the check engine light coming on?
Good luck and hope this helps.
Posted on May 13, 2009
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Posted on Jan 02, 2017
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