Sudden lost of power. 06 m35x

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
nissan789
Posts: 324
Joined: Sun Nov 19, 2006 2:33 pm

Sudden lost of power. 06 m35x

Postby nissan789 » Tue Jul 31, 2012 4:13 pm

So today an embarassig situation happened when our 06 m35x suddenly lost power during a test drive. (car is forsale!) it was running perfectly fine until we pulled into my subdivision and all of a sudden it wouldn't pass 1k rpm. It would only move 1-3mph. A couple having a walk were faster than us. The VDC off and "slip" showed on the gauge cluster.

When I got home, I disconnected the battery to reset the computer and cranked it back up. Everything was normal and te lights went away.

Could this be indicating that my brake pads are low? Does the car just cut off power? I checked te fluid and it's full. (that's what my search results came up with but I didn't read anyone loosing power)

Really weird and scary.

Thanks!


zerg711
Posts: 384
Joined: Thu Sep 02, 2010 10:23 am

Re: Sudden lost of power. 06 m35x

Postby zerg711 » Tue Jul 31, 2012 6:00 pm

Sounds like your car went into limp mode to protect the engine.

This has nothing to do with your brakes... I'd be more concerned about the engine. You should probably have it checked or at least have the stored engine code read to make sure it's nothing serious.

cruzad3r
Posts: 1319
Joined: Fri Mar 05, 2010 6:34 pm
Car: 2006 M35x fully loaded
Location: CT

Re: Sudden lost of power. 06 m35x

Postby cruzad3r » Tue Jul 31, 2012 6:50 pm

Probably the engine sensor. Check for code then post here. If it's the sensor than it's an easy fix. Both part and labor are minimal.

uh2
Posts: 28
Joined: Sun Jul 31, 2011 12:16 am
Car: 2006 M35x

Re: Sudden lost of power. 06 m35x

Postby uh2 » Tue Jul 31, 2012 9:25 pm

A bad MAF caused the same thing for me. Pull the codes.

nissan789
Posts: 324
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Re: Sudden lost of power. 06 m35x

Postby nissan789 » Tue Jul 31, 2012 9:58 pm

Well of now I unplugged the battery and restarted it and it's running normal again with no codes

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The Bodyguard
Posts: 1371
Joined: Wed Nov 17, 2010 9:52 pm
Car: 08 M35 black loaded custom VIPDOUT
08 G35s sold 92k miles
08 M45s-sold 78k miles
07 M35-traded 53k miles
95 J30-sold 155k miles
Location: Cypress, TX (Houston) o.g. from southern cali (North Hollywood)!!

Re: Sudden lost of power. 06 m35x

Postby The Bodyguard » Wed Aug 01, 2012 1:17 am

nissan789 wrote:Well of now I unplugged the battery and restarted it and it's running normal again with no codes
Same thing just happened to me yesterday, July 30, 2012! I posted on my Facebook group but hadn't got around to posting up here...

At 70k about a month ago light went on and before I could take it to AutoZone to run the code, the light went off!! Car was running fine the whole time (about two days).

Yesterday at 72.5k my "Service Engine Soon" AKA CEL goes on along with the VDC/SLIP combo and shuts down while driving... I followed by turning car on and only CEL stayed on and car returned to running normal!! Today I took it down to AutoZone and got the code read giving me P2138 APP Accelerator Position Sensor!

After reading up quite a bit I have found that the sensor could be open, on it's way to going out, or out already... I have taken some precautionary steps and reset my CEL off to see if light stays off and doesn't return!! Checked accelerator position sensor connection, depressed pedal down many times all the way to the floor and back, adjusted my floor mat to where it wouldn't move on top of accelerator pedal when I turned car off... I also filled gas tank because I had left it on empty (with light on) and parked for about five days without starting it!!

And that's it... For now, light had stayed off and hopefully stays off!! Possibly my sensor was staying open since my floor mat would rest on top of the pedal from time to time (from what I had noticed) :gotme

nissan789
Posts: 324
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Re: Sudden lost of power. 06 m35x

Postby nissan789 » Wed Aug 01, 2012 6:43 am

Wierd. Well we havn't driven the car much. Only 3k for the past year. It has 120k miles now. I'll check my floormats since I have 2 mats resting on top of each other. Where is the throttle position sensor located?

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The Bodyguard
Posts: 1371
Joined: Wed Nov 17, 2010 9:52 pm
Car: 08 M35 black loaded custom VIPDOUT
08 G35s sold 92k miles
08 M45s-sold 78k miles
07 M35-traded 53k miles
95 J30-sold 155k miles
Location: Cypress, TX (Houston) o.g. from southern cali (North Hollywood)!!

Re: Sudden lost of power. 06 m35x

Postby The Bodyguard » Wed Aug 01, 2012 7:14 am

nissan789 wrote:Wierd. Well we havn't driven the car much. Only 3k for the past year. It has 120k miles now. I'll check my floormats since I have 2 mats resting on top of each other. Where is the throttle position sensor located?
Mine was reading only one code p2138 APP accelerator position sensor, not TPS. The APP is located at the top rear of the accelerator assembly (gas pedal). You can disconnect it and check connection for a bad connection... I did not completely disconnect it but fiddled with it a bit making sure the connection was true. I depressed the pedal and released it firmly with my hand many times as I was down there checking the connection to the sensor. That and clearing the floor mat from a top the accelerator pedal is all I've had to do at this time...

Again, the only code I'm getting is: P2138

What code or codes are you getting??

nissan789
Posts: 324
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Re: Sudden lost of power. 06 m35x

Postby nissan789 » Wed Aug 01, 2012 7:32 am

I currently lights what so ever after rebooting the car. I will hook up a code scanner anyways

asavage
Posts: 33
Joined: Tue Apr 20, 2010 1:01 pm
Car: 2006 M35 Sport RWD
Location: Duvall, Wash.
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Re: Sudden lost of power. 06 m35x

Postby asavage » Sun Nov 11, 2012 10:52 pm

We had a P2138 last May. There was a sudden loss of power and a SES light. We limped it home, I pulled the code, and rolled the dice on replacing the APPS without doing actual thorough diagnostics. IOW, I threw a part at the problem. I replaced the APPS myself. I didn't have time to shop around and get the best price on the part, I just bought it at the dealer the same day.

The Accelerator Pedal Position Sensor (APPS) is the pedal assembly minus the actual pedal. Part No. 18002-EH000, $250 at the dealer (May2012). It was in stock (what does that tell you?).

It took about an hour for me to replace, including taking pics. If you knew what you were doing, it could be done in a lot less time. I'm just now getting around to posting the pics, six months later :(

(click on any image for larger)

The replacement APPS. The part you put your foot on does not come with it, but everything else does:
Image

Pry up this cover:
Image Image

Remove the 10mm nut below:
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Next is the tricky part: removing the two plastic pins that retain the pedal to the link. Unless you know what you're dealing with, you'll break it (as I did). Fortunately, the part the breaks comes with the new APPS.
Use needle-nose pliers to squeeze the end of each pin. IIRC, the part needed to be squeezed on mine was facing the right side of the pedal, and I assume that bent-nose pliers would have been necessary.
Image Image

I broke my link before I figured out how to remove the pins:
Image Image

Better pic of the pins:
Image Image Image Image

Jumping ahead of myself, here's the pedal with the new APPS:
Image


Remove the vent from the left/upper side of the tunnel:
Image Image


Carefully pull back the carpeting to reveal two more 10mm nuts to remove, then begin manouvering the old APPS down. I admit, I cannot recall if there was one more fastener higher, but I don't think so. Once you've begun to pull it down, you'll have to snake your hand to the top of it and remove one cable guide/clip, and then disengage the harness from the APPS.
Image Image Image

Installation is the reverse of the above. Reconnecting the wire harness and the harness guide/clip was the hardest part of that.

When reassembled, run though the re-train procedure (search for it) to train the ECU to the new sensor. I cleared the P2138, retrained the ECU, and never had a recurrence of the problem.

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The Bodyguard
Posts: 1371
Joined: Wed Nov 17, 2010 9:52 pm
Car: 08 M35 black loaded custom VIPDOUT
08 G35s sold 92k miles
08 M45s-sold 78k miles
07 M35-traded 53k miles
95 J30-sold 155k miles
Location: Cypress, TX (Houston) o.g. from southern cali (North Hollywood)!!

Re: Sudden lost of power. 06 m35x

Postby The Bodyguard » Mon Nov 12, 2012 6:29 am

Excellent write up!! Better late than never :dblthumb: this should be stickied as a DIY APPS replacement!! :bigthumb:

asavage
Posts: 33
Joined: Tue Apr 20, 2010 1:01 pm
Car: 2006 M35 Sport RWD
Location: Duvall, Wash.
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Re: Sudden lost of power. 06 m35x

Postby asavage » Mon Nov 12, 2012 7:58 am

It looks like there is one more 10mm nut higher up the bracket that needs to be removed, that I forgot. That's the problem with waiting so long to post :(

Image Image

A couple more pics of the APPS. There was no visible damage to the wiper areas; I expected to see wear.

Image Image Image

asavage
Posts: 33
Joined: Tue Apr 20, 2010 1:01 pm
Car: 2006 M35 Sport RWD
Location: Duvall, Wash.
Contact:

Re: Sudden lost of power. 06 m35x

Postby asavage » Fri Jan 24, 2014 3:44 pm

For the search engines: Replacement of this pedal assy. is most likely covered under NHTSA Recall 13V-430. We are getting a reimbursement from Infiniti for the cost of the pedal assy too.

(click on image for full-size)
Image


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