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by captngrif
Thu Jun 27, 2024 5:06 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: Rear O2 Sensors Needed???
Replies: 2
Views: 3825

Rear O2 Sensors Needed???

I have had my old 2005 Nissan Pathfinder for a while now, probably 2015 or so. Been through a lot with the old dog. For the last two years I have kept it to be just a towing rig for my boat. It gets about 1000 miles a year now. Hoping to keep it going for one more summer. This spring, the exhaust wa...
by captngrif
Mon Oct 10, 2022 7:23 am
Forum: R51 Engine, Driveline and Powertrain
Topic: 2005 Pathfinder Died on the Boat Ramp This AM!!
Replies: 14
Views: 2214

Re: 2005 Pathfinder Died on the Boat Ramp This AM!!

Got the new alternator in, fired it up and voltage measured 14.40 at the battery everything looked good, let it idle for a while while I pumped up the tires and such. Went for a drive, noticed the voltage reading on the dash wasn't as high as it was at first. Came home and voltage at battery measuri...
by captngrif
Mon Oct 03, 2022 6:18 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: 2005 Pathfinder Died on the Boat Ramp This AM!!
Replies: 14
Views: 2214

Re: 2005 Pathfinder Died on the Boat Ramp This AM!!

One can kill the other, both ways. The battery is definitely trashed with a 12.3V float. Before you replace the alternator, check the field fuse. If it's blown, it's a telling clue that the alternator went bad and chronic undercharging probably depleted the battery. If it isn't, check your charge v...
by captngrif
Sun Oct 02, 2022 6:00 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: 2005 Pathfinder Died on the Boat Ramp This AM!!
Replies: 14
Views: 2214

Re: 2005 Pathfinder Died on the Boat Ramp This AM!!

Update: I charged the battery over a couple of days, measured about 12.33V once fully charged. Fired her up and the voltage across the battery dropped to about 11.99-12.00V. Truck sat for a week, measured the battery this afternoon, 12.26V Went ahead with the belt, tensioner, and pully change. The ...
by captngrif
Sun Oct 02, 2022 3:29 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: 2005 Pathfinder Died on the Boat Ramp This AM!!
Replies: 14
Views: 2214

Re: 2005 Pathfinder Died on the Boat Ramp This AM!!

Update: I charged the battery over a couple of days, measured about 12.33V once fully charged. Fired her up and the voltage across the battery dropped to about 11.99-12.00V. Truck sat for a week, measured the battery this afternoon, 12.26V Went ahead with the belt, tensioner, and pully change. The p...
by captngrif
Mon Sep 19, 2022 6:38 pm
Forum: R51 Engine, Driveline and Powertrain
Topic: 2005 Pathfinder Died on the Boat Ramp This AM!!
Replies: 14
Views: 2214

Re: 2005 Pathfinder Died on the Boat Ramp This AM!!

On vehicles which have the "smart" charging system controlled by the IPDM (as yours does), a very crappy battery can cause exactly the symptoms you describe without the alternator being bad. So if the IPDM sees a lousy battery it will throttle down the alternator voltage? I was thinking b...
by captngrif
Sat Sep 17, 2022 9:17 am
Forum: R51 Engine, Driveline and Powertrain
Topic: 2005 Pathfinder Died on the Boat Ramp This AM!!
Replies: 14
Views: 2214

2005 Pathfinder Died on the Boat Ramp This AM!!

Well, it was a heck of a morning. Backed the boat down into the water, tied it to the dock, got back into the Pathfinder, put it in drive and NOTHING, no revving, no throttle response, nothing. Put back into park and revs fine. Tried all drive gears and nothing. Luckily there was a line of nice full...

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