1996 Nissan Truck Repair Question
Mileage: No information provided.
1996 pickup will not idle
Asked by kaptindanAnswer
Find the IACV/AAC valve and EGR clean it out and test the TPS.
I've removed the EGR valve and cleaned it out, it was closing properly. I removed the TPS and measured it against a new one at the parts store and it seemed to be fine. Not sure how to check the AAC vavle....
To include all the symptons, the check engine light was coming on prior to it not running with a cylinder 3 misfire. Bad gas smell associated with idling, and when it stalls it will sometimes diesel like its running lean.
Did you fix the misfire on 3? Check the fuel pressure with a gauge.
Working on making an adaptor to check the fuel pressure...I plan on replacing no.3 fuel injector anyway...
So the fuel pressure for the system was 32psi and stayed consistant. So I am at a total loss as to what this problem is......the misfire I beleive is gone as well, it won't stay running long enough to write codes....
I connected a scanner to the ODBII port as well and noticed the O2 Sensor reading fluctuating between .04 to .880...O2 sensor was replaced..
I want to add that theres no throttle response at all....when you give it gas it acts like its not getting fuel....
Inspect/adjust the throttle position sensor's closed and WOT voltages. The TPS is like the accelerator pump on a carb system. If the computer don't see the correct position of the throttle is will not give fuel for acceleration.
I was sure it was the TPS and put a new one on and it still does the same thing....