View Full Version : Nissan Pathfinder querks.

11-13-2012, 04:17 PM
Well I put the new(used) fuel pump in, and it starts good now and I can drive it, been to ridge and back twice now. However, at about 80km/h it will start acting weird. (I noticed this on the 80km stretch after the bridge from poco to pitt meadows)

Anywho, if I'm at a steady highway speed, it will drop RPM and start shaking, until I give it a fair amount of gas and force it to speed up. So, it doesn't like to cruise at a highway speed. In the city it's alright.

In the city however, if I come to a complete stop, and I'm in drive, it will vibrate and have a hard time taking off again.

Not sure really, thought maybe TPS... Heard it might be the Auxialiary Air Valve as well... Not sure how to test these components to see if they are malfunctioning or not. I don't want to throw money at parts on a guess..

ROBO also mentioned it might be a tranny thing, the Torque Converter wearing out. I put some DURA GARD in it, making sure not to overfill the tranny. The tranny fluid doesn't smell very sweet, but it doesn't smell burnt either. It's sort of dark but when I rub it between my fingers it feels slick. No idea when it was changed last. Haven't tested it since yet was hoping to check the sensors first.

Cheers, ideas or thoughts?

11-13-2012, 04:41 PM
Pull the plugs and check them, put a vacume guage on might see what it reads look for loose motor mounts or tranny mounts too

Punk in Drublic
11-13-2012, 04:44 PM
sell it to the highest bidder.

11-13-2012, 05:01 PM
sell it to the highest bidder.

That's an option I've been thinking about lately lol

11-14-2012, 09:40 AM
Fuel filter plugged pull it and try to blow through it
If there is little or no restriction throw it back in
If restricted throw it out

11-14-2012, 10:10 AM
Check all you vacuums (possible map/maf), grounds. If the fuel filter looks like it's never been changed, just buy a new one, they're only like $18. Also, check you crank shaft position sensor, make sure the mounting bolts are tight and that the wires are in good shape.
Test you Crankshaft sensor, you can find tons of info on it. My friends blazer used to drive fine, until it got to 3K rpms, then it would run like shit. It would also run like shit if it sat idling for to long and he tried to go

11-14-2012, 11:49 AM
Sounds like a torque converter to me.

11-14-2012, 06:41 PM
not tranny mount or motor mounts

not fuel filter

not a vacuum line

not spark plugs or cap/rotor/wires

have to check crankshaft sensor still... looks like its leaning towards the torque converter though.

Might be selling it to the highest bidder after all.

Punk in Drublic
11-14-2012, 06:56 PM
give ya 100 bux.

11-15-2012, 12:28 PM
Hey Just had a thought. I had the exact same thing happening to my old blazer k5, thought it was the tranny or torque converter. Swapped it out, problem still there. Ended up cutting out my catalytic converter. It was Rusted almost shut inside, thing bolted like brand new

11-15-2012, 04:13 PM
Air filter or cat

11-15-2012, 08:04 PM
air filter is new

i put the cat on less than a year ago could it be fuckered already??

i have it on craigslist now anyway

Thanks for all the help guys but I think it's time to get rid of this thing anyway. It's been around.