[Vacuum Line To Nothing?]

2 hours ago, neilca said:

Have you checked your gas cap? I had to replace mine (don't remember the code) and the one on my Mother's Avalon recently.

Yeah i have already replaced it. The loose charcoal in my lines makes me think its the canister

[Vacuum Line To Nothing?]

2 minutes ago, hawairish said:

 

Unfortunately, EVAP systems fly way over my head.  I'd presume that since it's all plumbed together, a stuck-open valve/solenoid and failed canister could be a culprit, but I think the only vent area is near the canister, but ultimately near the filler neck.  Is that the general area you're smelling it at?

I believe its probably that area, i use to smell it near the front but assume that was due to the EGR vacuum line that wasn't attached. i'll pull everything apart tomorrow and figure it all out

[Welcome New Members !]

Hello,

Been reading this forum since the day I picked up my 1997 Infiniti QX4 (pathfinder in a tuxedo) and have learned a great lot about the vehicle since and have already started some modifications and repairs. Vehicle mechanically seems really good and the body has next to no rust besides the side steps. Currently have an Auxbeam lightbar installed in the front grill, a roof basket with an extension and some Cooper AT/W's waiting to be put on.

 

Decided ive posted enough to show off the new rig. This vehicle is primary a winter vehicle (not beater, more defeater ) and hopefully will get to do some light/medium off roading.

 

[Vacuum Line To Nothing?]

1 hour ago, hawairish said:

 

I had the canister fail on my 98 Frontier, too. Cleaning the lines was a real crappy job. I flushed the hard lines with water, air, and even copper wire. One particular note is that if any of the charcoal reached the solenoids, I’ve found the solenoids to be repairable...far cheaper than replacements.  My issue was a P1444/Evan solenoid clogged by the charcoal granules. Also, if you need a new EVAP canister, I’ll note that I got a 98 Maxima canister to work on my Frontier with minimal modification, and a 98 Pathfinder uses the same as the Frontier for that year...not sure if 97 was different...Maxima canister was like $30 instead of $150 for my truck. 

Thanks for the heads up, I knew it was going bad as I have already cleared my lines in the engine bay of charcoal just need to clear the rest. Would you agree that with the canister failing it would explain why i occasionally smell gas?

[Vacuum Line To Nothing?]

Just thought I would update, fixing this did get rid of my P0400 code. still have the 1447 to figure out but one down at least, and for free

[Vacuum Line To Nothing?]

34 minutes ago, Slartibartfast said:

Looking at EC-13 of the '97 manual, that line should go from the BPT valve (what it's connected to currently) to a steel hard line below it, which goes under the plenum forward to the EGRC solenoid valve (which is how the computer controls the EGR, so no surprise it's throwing an EGR code with that unhooked). There are two hard lines under there, looks like you want the shorter one, though it should be pretty clear which line doesn't have a vac hose on it. You might have to feel around under there to find what you're after.

You sir rock. After feeling around forever i found it. Had to remove the valve, to be able to access it and assuming i put it back together all right (valve sits in a really short vacuum line/adapter) I should be good i hope!

[Vacuum Line To Nothing?]

21 hours ago, Smallpathy said:

Give me about an hour and I'll send pics of where it goes

Sent from my Pixel using Tapatalk
 

Any follow up?

[Vacuum Line To Nothing?]

I hate check engine lights and I currently have one and have been working through the various codes. I have P0400 and P1447. I assume the 1447 is related to a bad charcoal canister as i cleared my lines of a lot of charcoal and i think for P0400 its due to either a stuck open EGR Valve or a bad EGRC solenoid. While working around in that area of the engine i found a vacuum line to nothing (attached image) and was wondering if anyone had the same or could show where it connects. I was looking on ProDemand and it shows on a diagram that it should T into other lines but i see no T and it's a short line that doesn't look broken or cut so i doubt it could reach that section anyways.

 

Any and all help is greatly apprecieated

[Tcase Won't Shift Into 4Lo]

10 minutes ago, hawairish said:

 

But if you can feel it going between 2wd and Auto, wouldn't that suggest that the lever is the 4H position?  I think the system would fault on Auto mode if it wasn't (there's a N/4Lo sensor).  Still, no dash lights?  Also, I don't think your shifter requires depressing the lever...is it possible that it's just passing through neutral without providing any feedback through the lever?  On the part-time system, it's pronounced, but I'm not familiar with the QX4 lever or switch (uh, well, aside from having a shift knob in my parts bin, and a newer selector switch controlling my air compressor and locks)

 

Could you also recap your shift procedure?  I presume you're stopped, engine running, and shifting from 4L to 4H?  Is the 4wd dash light lit when the lever is all the way forward and switch set to Lock?

 

Okay, driving normally the transmission in D, lever in N, i can switch the auto mode on and it does a 50/50 torque split between the wheels when required, but stays RWD when not needed. At a stop, transmission in N, i can pull the lever back and engage 4L and see the light on the dash and lock auto enabled, and then swithc back to D. In all other scenarios i can push the lever a bit forward but not enough for it to engage anything or remain forward it just comes back to N (wigglin side to side) with no dash lights. My shift is Top H, Middle N (wiggle side to side), bottom 4L. engine is always running when attempting to switch. 

 

Here is a photo with the chart from Infiniti showing optimal settings and my shifter and such. There is a possibility N is the same as H and im just dumb but i dont think so?

https://www.dropbox.com/s/91z835l54vogv86/Photo 2018-09-14%2C 3 32 42 PM.jpg?dl=0

[Tcase Won't Shift Into 4Lo]

20 hours ago, hawairish said:

 

Not a problem.  We've had a few threads about shifting that have gotten interesting, to say the least, but we've had some spot topics come up.

 

 

Your 97 QX4 is a little different than other R50/QX4 trucks since you have both a mechanical lever (positions H, N, and 4LO) plus an electronic switch (2wd, Auto, and Lock).  4H for you is H+Lock.  When the shifter is in 4LO, though, the switch is disabled/bypassed.  So if 4L works, I might suggest probing or cleaning the switch and seeing if that helps.  Keep in mind the transfer case in yours has a motor to engage things, instead of a physical linkage, so it also relies on input from other sensors (and comm with the AT computer) before it'll act on drivetrain requests.  Are you also basing engagement on the 4wd dash light(s), or are those lights indicating any issues?

 

Also, may want to look at the Owner's Manual, or the Transfer Case chapter of the Factory Service Manual (FSM) (specific links for 97 QX4 embedded into this sentence) for some additional info or guidance.

I appreciate all of the info. In my case the problem is i physically cannot push the lever forward to engage H. I know the electric switch works because I can switch between 2WD and Auto and notice a physical difference.

[Tcase Won't Shift Into 4Lo]

First post and don't want to hijack the thread but how do you shift into 4H? I have a 1997 QX4 and have the opposite issue that i can stay and neutral and shift into 4L but cannot get into 4H