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  #31  
Old 08-04-2016, 10:46 AM
wmj259 wmj259 is offline
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Doing some work now to neat things up.


This crap here:






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  #32  
Old 08-04-2016, 10:51 AM
wmj259 wmj259 is offline
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I am still having the same issue with the rpm. I hate how the relearning don't give a chirp sound or blink to tell if it worked or not.
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  #33  
Old 08-04-2016, 12:00 PM
wmj259 wmj259 is offline
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I lowered my rpm by turning the tps. MY Snap-on scanner is telling me there is a screw on the IACV valve. I do not see a screw on it. Someone help me with this.

I've done the relearns probably 20 times now. But the only one I cant get done is the IACV one. When it says in the step to hold the gas pedal for 20 seconds till the SES light comes and stays on?
But the thing is I dont have any lights on at the moment. cluster is clear of lights.
It comes on and it just doesnt stop flashing. It probably stays on for 2 seconds and flashes and 2 seconds over and over again. Is that what it means?
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  #34  
Old 08-04-2016, 03:02 PM
wmj259 wmj259 is offline
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I guess the issue is with the TPS or IACV that I just got. Not getting any SES light or any codes. :/ :angry: :/ If I follow this

Throttle Position Sensor NAEC0419 Throttle valve conditions Voltage (at normal operating temperature, engine off, ignition switch ON, throttle opener disengaged)
Completely closed (a) 0.15 - 0.85V
Partially open Between (a) and (B)
Completely open (B) 3.5 - 4.7V

I measure this by putting a wire into the TPS brow connector middle port.




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  #35  
Old 08-04-2016, 06:23 PM
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smj999smj smj999smj is offline
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I just checked the service manual for your vehicle. There is no idle speed screw on the IACV-AAC valve. The idle is computer controlled via the IACV-AAC valve. Idle spec is 750 RPM +/- 50 RPM, so your Pathy is within specs. When idle is not in spec, an idle air volume relearn should be performed. You can download the "EC" Engine Control section of the 2002 Pathfinder factory service manual, which has information on how to check/adjust timing and idle and perform an idle air volume relearn; it's under "Basic Service Procedures." You can find the download here:

http://x.nissanhelp.com/forums/Knowledgebase/links/71/
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  #36  
Old 08-04-2016, 07:41 PM
wmj259 wmj259 is offline
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It is only in spec when I adjust the TPS by rotating it, otherwise when its at the middle orientation (meaning halfway rotated to reach either side) the idle is not at 750+/-50. I have to turn the TPS all the way to one side to get it just to 750 rpm. I suppose that's right, but then my issue still remains with the jumping jack of the RPM between 1500 and 2000 rpm.

Thats the EC I used to move my TPS back to spec b/c I had to rotate it the other way and it was at like .01 volts when minimum should be at .3 volts when completely closed. To stay in specs page 722, I had to rotate tps back to about .5 volts which gave me 1800 rpm at idle and engine normal temperature. It may just be the relearning that's killing me right now.

Last edited by wmj259; 08-04-2016 at 08:28 PM.
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  #37  
Old 08-05-2016, 01:19 AM
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smj999smj smj999smj is offline
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Quote:
Originally Posted by wmj259 View Post
I am still having the same issue with the rpm. I hate how the relearning don't give a chirp sound or blink to tell if it worked or not.

If you had a scan tool to do it, it would tell you if the relearn completed or not. That's some wiring mess! Glad mine's not like that! No wonder it's screwed up!
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  #38  
Old 08-05-2016, 05:51 AM
wmj259 wmj259 is offline
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Quote:
Originally Posted by smj999smj View Post
If you had a scan tool to do it, it would tell you if the relearn completed or not. That's some wiring mess! Glad mine's not like that! No wonder it's screwed up!
Yeah that mess was horrible. They cut 2 ignition wires from the 6 wire connector that goes the opposite side where the key is inserted, cut it up and then had a 3rd world fix up for it. MY goodness.


It does tell me that the IACV relearn was complete, I used a friends Snapon Modisultra. It said it was complete but it may take more than 1 try if symptoms don't get better. I did it 3 times. Stupid thing is that the Throttle relearn does make the clicking noise when I turn the key off. Not sure what the ideal clicking operating noise is.
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  #39  
Old 08-05-2016, 05:59 AM
wmj259 wmj259 is offline
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Quote:
Originally Posted by smj999smj View Post
Before adjusting idle or ignition timing, there is a procedure that must be performed. Basically, run the engine at 2000-3000 RPM for two minutes and make sure the engine is at normal operating temperature. Shut the engine off. Unplug the throttle position sensor. Start the engine and rev the engine a few times, then let it idle. Adjust the ignition timing to spec. Adjust the base idle to spec. Shut the engine off and plug the TPS back in.
The TPS has a learned memory. There is a technical service bulletin that shows how to adjust it. It is unplugged with the engine at normal operating temperature and then the specified feeler gauges are used along with a multimeter to properly adjust its position. Afterwards, the closed throttle position needs to be relearned.
Since the IACV screw doesn't exist. Also if I didn't mention, the ECM in the car is not what should be in this car. I had it repaired at a Module Repair in California, but I am not sure if this is the same module I sent in, don't remember.

Looking for that bulletin, I turned the TPS back to original position (I think thats what the whiteout mark is). "PROCEDURE TO COMPLETE IAVL
WHEN IDLE SPEED NEEDS TO BE REDUCED.
" Is that the title of the bulletin?

Last edited by wmj259; 08-05-2016 at 06:08 AM.
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  #40  
Old 08-05-2016, 08:32 AM
wmj259 wmj259 is offline
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Tried doing that bulletin, my scanner says test was completed. But still having that rpm spike at 1500-2000. I adjusted the voltage from the TPS to give me a 775 rpm while staying in specs on page 772 or 722 (whichever was the last page on the EC manual).
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  #41  
Old 08-06-2016, 06:14 AM
wmj259 wmj259 is offline
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Could this be because the ECM is the wrong part number than what it should be?
I have a 23714 4W001 when it should be either 23710 5W511 OR 23710 6W100
based on the parts link Nissan USA eStore
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  #42  
Old 08-06-2016, 12:01 PM
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smj999smj smj999smj is offline
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I doubt the ECM program is what's causing the spike, but, you can have a dealer reprogram the ECM to the most current version for your vehicle.
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  #43  
Old 08-06-2016, 12:30 PM
wmj259 wmj259 is offline
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Quote:
Originally Posted by smj999smj View Post
I doubt the ECM program is what's causing the spike, but, you can have a dealer reprogram the ECM to the most current version for your vehicle.
The bracket for the ecm doesnt match what it should be? I have no clue what to do next... dealer would be my next option.
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  #44  
Old 08-19-2016, 05:41 AM
wmj259 wmj259 is offline
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So I was able to get my friends help on this issue, will post any updates.
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  #45  
Old 08-28-2016, 08:14 AM
wmj259 wmj259 is offline
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Friend told me a bad O2 Sensor or CatConverter could be the problem. Is this possibe when CEL isn't on?
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