| michaelloveusa |
Hi all. First time poster here.
I have an '04 Murano that has been cutting out when accelerating from idle. Most of the time it is a small lag (< 1/2 second) before it kicks in, but sometimes when I am in stop and go traffic, I will step on the gas and it literally will not do anything for several seconds. This is kind of dangerous and I want to get it fixed. What is weird is that once I get the several second lag issue, it will not go away until I turn off the car and start it again (also not too good in traffic). It has been a bit of an adventure driving.
I have no check engine lights on, so I am not sure what it is. I talked to a service writer at the dealership and she suggested that I get the transmission fluid changed. Does that make any sense at all to anyone?
Thanks in advance for any advise.
Mike |
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| zebelkhan |
It maybe a simple case of air leaking into the intake manifold.
It has been reported by some MO owners that sometimes the hose that connects the airbox and the intake manifold slips off of the manifold, or is loose enough, where air is sucked in past the air flow sensor causing issues just as you have described. So before you do anything, pop the hood and make sure the air intake duct system is okay and not slipping off. |
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| njjoe |
quote:
Originally posted by michaelloveusa
I talked to a service writer at the dealership and she suggested that I get the transmission fluid changed. Does that make any sense at all to anyone?
Mike,
It sounds like your service writer is clueless :8: and simply looking to generate revenue for the dealership. If the problem was with the CVT the engine would be revving freely instead of not doing anything.
My first guess would be a problem with the throttle position sensor, gas pedal position sensor, or throttle control actuator. The fact that the problem goes away temporarily after you restart the engine suggests it is electronic in nature. Did anyone at the the dealership hook your car up to a Consult-II tool to interogate the system?
-njjoe |
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| michaelloveusa |
| Thanks for your responses. Just getting back to this. I have not taken it to the dealer. I took it to my local shop and it did not show any codes. Of course they can't reproduce the issue, so the whole thing is in flux. Can the dealer do more on this? |
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| Eric L. |
| Unless the problem can be reproduced at the dealership, they can't do anything with it. I agree with Joe - its probably related to the electronic throttle body or throttle position sensor. This is a fairly common problem with the 1st gen Muranos. Don't forget to report this on the NHTSA website. |
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| Warhammer |
If you're thinking it's a vacuum leak of some sort do this:
Get yourself a can of brake cleaner or electrical component cleaner and spray it all over the seals on the motor while the motor is idling. You should remove the black engine cover when doing this. Hit the throttle body, air box, manifolds, etc. If you notice the engine drop in RPM's then you have a bad gasket or something causing an air leak.
There are also some relearns you can do that might help. Since you've not mentioned anything about stalling shortly after start-up, you don't have to do the idle air volume relearn. Here's an attachment from the Service Manual: |
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| michaelloveusa |
Thanks for your suggestions. I will try the relearns. Also, does the Owner's manual show where all of the sensors mentioned are in a picture of the engine? If not, do you know where I can find one? I am a rookie at this.
Thanks, Mike |
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| Warhammer |
I got the picture above from the Nissan Service Manual for the 2004 Nissan Murano. You can buy it at:
www.nissan-techinfo.com
The Throttle Control Actuator houses the Throttle Control Motor and the Throttle Position Sensor. The Accelerator Pedal Position Sensor contains a variable resistor that detects exactly where the pedal is and feeds that information to the ECU.
Of course, if there are tests that a technician can do to see if each of these are working normally. If you're unfamiliar with how electronics or engines work, I would not attempt the troubleshoot.
I have never seen a picture that labels all sensors at once but here are the 2 you need that covers everything mentioned so far. |
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| kanlyho |
I had this problem for a long time and everytime I take the car back to (different) dealer they just can't replicate the problem.
Changed the TPS at my tech guy's garage recently and problem is gone. |
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