1996 pickup will not idle

1996 NISSAN TRUCK
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KAPTINDAN
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I have a 1996 Nissan pickup with a KA24DE that will not idle. It starts fine but after 5 minutes or so will start to sputter them eventually die. Bad gas smell goes along with it as well. I am at a loss as to what it is. I was sure it was the MAF sensor but it was not. Lucky me!! lol
Nov 15, 2007 at 4:41 PM
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RASMATAZ
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Find the IACV/AAC valve and EGR clean it out and test the TPS.
Nov 15, 2007 at 7:24 PM
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KAPTINDAN
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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....
Nov 16, 2007 at 7:57 AM
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KAPTINDAN
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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.
Nov 16, 2007 at 9:03 AM
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RASMATAZ
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Did you fix the misfire on 3? Check the fuel pressure with a gauge.
Nov 16, 2007 at 12:05 PM
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KAPTINDAN
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Working on making an adaptor to check the fuel pressure...I plan on replacing no.3 fuel injector anyway...
Nov 18, 2007 at 6:17 PM
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KAPTINDAN
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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....
Nov 20, 2007 at 12:29 PM
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KAPTINDAN
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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..
Nov 20, 2007 at 12:36 PM
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KAPTINDAN
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I want to add that theres no throttle response at all....when you give it gas it acts like its not getting fuel....
Nov 20, 2007 at 3:38 PM
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RASMATAZ
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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.
Nov 20, 2007 at 5:05 PM
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KAPTINDAN
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I was sure it was the TPS and put a new one on and it still does the same thing....
Nov 20, 2007 at 5:47 PM
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RASMATAZ
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Have you check the ignition timing and also for excessive backpressue in the exhaust system.
Nov 20, 2007 at 10:53 PM
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KAPTINDAN
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another poster had a issue where his truck would not respond to the throttle as well and he replaced the distributor and it fixed the problem. I will try that next....everything else is new. lol!!!! And there is no back pressure due to the cat being removed...
Nov 21, 2007 at 5:53 AM
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KAPTINDAN
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update on my issue. I replaced the distributor and that corrected the problem. At first, I looked at the spark and it was bright blue...thinking that the distributor was good. Don't let that fool ya....mine was bad...
Nov 21, 2007 at 4:06 PM