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by PattiM
Thu Jan 20, 2022 5:21 pm
Forum: Southwest US
Topic: Arizona Pathfinders
Replies: 8
Views: 16719

Re: Arizona Pathfinders

Are there any decent older pathfinder mechanics in AZ? (1992 6-cyl. 4x4) Prescott area.
by PattiM
Wed Jan 19, 2022 11:56 am
Forum: 1986-1995 Pathfinder (WD21)
Topic: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)
Replies: 14
Views: 3502

Re: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)

I replaced the MAF sensor and it didn't seem to make any difference. Something is making this engine run rough. Could it be something in that maze of rubber hoses and sensors? Also, there's a high-pitched whistle that varies with accelerator pedal position - as if it's coming from the butterfly in t...
by PattiM
Tue Jan 18, 2022 8:34 pm
Forum: 1986-1995 Pathfinder (WD21)
Topic: scanner for 1992 pathfinder?
Replies: 1
Views: 2552

scanner for 1992 pathfinder?

I have a 1992 Pathfinder 6 cylinder 4x4 and was wondering if there's a reliable OBD tool for reading computer errors (like bad sensors)? It suddenly started running rough all the time. For a few years before that, it would suddenly run rough for a few minutes - maybe up to 10 minutes - once or twice...
by PattiM
Thu Dec 30, 2021 10:56 am
Forum: 1986-1995 Pathfinder (WD21)
Topic: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)
Replies: 14
Views: 3502

Re: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)

I'll have to look on Tuesday, I'm not at the shop and don't have access to ASIST. If I haven't posted anything by around noon Tues, freshen-up this thread to remind me. Thank You! I'd really appreciate that. I'm hoping that whatever is putting oil into the MAF sensor is what is causing this engine ...
by PattiM
Sat Dec 25, 2021 12:46 pm
Forum: 1986-1995 Pathfinder (WD21)
Topic: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)
Replies: 14
Views: 3502

Re: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)

BTW: What manual is that? The Nissan shop manual? Yep. I couldn't find that section here in Nico, but it's in the EC section of the FSM. Could you look in your manual for the two 1/2 inch diameter inlets on the air duck and see what they're connected-to? I found that the one closest to the air filt...
by PattiM
Tue Dec 21, 2021 8:54 am
Forum: 1986-1995 Pathfinder (WD21)
Topic: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)
Replies: 14
Views: 3502

Re: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)

GREAT!! Thank you. I've got to try all that!! I think this car was driven for years in Phoenix where especially high under-hood temperatures may have congealed oil vapor on the rocker arm cover internals and in the PCV system. FWIW: I had the compression checked and it's nominal. Plugs look nominal....
by PattiM
Mon Dec 20, 2021 9:17 am
Forum: 1986-1995 Pathfinder (WD21)
Topic: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)
Replies: 14
Views: 3502

Re: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)

See if you can blow through the PCV passages from the valve covers into the crankcase. You may have a clogged cover. Oil really doesn't have any route to reach the MAF except via the PCV system, so either your problem is there or something very unusual is pressurizing your crankcase. Oh, wait - the...
by PattiM
Mon Dec 20, 2021 8:32 am
Forum: 1986-1995 Pathfinder (WD21)
Topic: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)
Replies: 14
Views: 3502

Re: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)

See if you can blow through the PCV passages from the valve covers into the crankcase. You may have a clogged cover. Oil really doesn't have any route to reach the MAF except via the PCV system, so either your problem is there or something very unusual is pressurizing your crankcase. Thanks! Great!...
by PattiM
Tue Dec 14, 2021 6:46 pm
Forum: 1986-1995 Pathfinder (WD21)
Topic: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)
Replies: 14
Views: 3502

Re: Oil in air mass flow sensor? (92 pathfinder 4x4)

Most likely a bad PCV Valve, could also be a collapsed hose in the PCV system or a clogged air gallery inside one of the valve covers. It's probably causing your poor performance as well. As I said, I replaced the PCV valve and none of the hoses seem collapsed. There are three ports going into the ...
by PattiM
Tue Dec 14, 2021 3:18 pm
Forum: 1986-1995 Pathfinder (WD21)
Topic: Oil in air mass flow sensor? (92 pathfinder 4x4 V6)
Replies: 14
Views: 3502

Oil in air mass flow sensor? (92 pathfinder 4x4 V6)

My 92 Pathfinder started running rough all the time - sort of like it's running of 5 cylinders, but I think it's a fuel mixture problem. (problem with air mass sensor) The cylinders have good compression and the spark plugs are pretty clean. I took the air mass sensor off, and there is clean engine ...
by PattiM
Sun Nov 14, 2021 3:52 pm
Forum: 1996-2004 Pathfinder (R50)
Topic: Quick general question
Replies: 2
Views: 2264

Quick general question

So, apparently the 2002 Pathie has a timing *chain* - so this is more robust than a timing belt, right? I mean, it should last longer than 145,000 miles - or is this year pathie in need of a preventative chain/tensioner replacement?

THANK YOU,
patricia
by PattiM
Fri Jan 29, 2021 12:57 pm
Forum: 1986-1995 Pathfinder (WD21)
Topic: some 1994 pathfinder questions
Replies: 2
Views: 2988

Re: some 1994 pathfinder questions

Wow! Thank you for all the great information. The misfire is REALLY intermittent - a few times a year maybe? I did have a full tune-up and that didn't have any effect. The only thing I'd ever heard was a cracked distributor cap allowing arcing when it's wet - but the misfires, when they happen, aren...
by PattiM
Thu Jan 28, 2021 11:06 am
Forum: 1986-1995 Pathfinder (WD21)
Topic: some 1994 pathfinder questions
Replies: 2
Views: 2988

some 1994 pathfinder questions

Hi Again Everyone: I love my 1994 4x4 XE-V6 pathfinder (185k Miles) 5-speed manual which seems to run OK (no smoke). I had synchro/bearings/rearmainseal/clutch installed and a few thousand miles ago had the timing belt and tensioner(s) replaced (as a preventative measure). The rear mainseal was a so...
by PattiM
Sun Jul 21, 2019 8:17 am
Forum: 1986-1995 Pathfinder (WD21)
Topic: Clutch/bearing change for 4WD?
Replies: 3
Views: 6856

Thank you very much for the reply. Not a squeal - more of a rumble/vibration, with maybe a hint of low-frequency squeal in it... As time goes on I'm hearing things (and feeling through the shifter) as I shift other gears (not just initially). It's getting more difficult to get back into first someti...
by PattiM
Sat Jul 06, 2019 10:12 pm
Forum: 1986-1995 Pathfinder (WD21)
Topic: Clutch/bearing change for 4WD?
Replies: 3
Views: 6856

Still interested - how long do these take to fail after they start making noise?

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