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87 Pathfinder Coupe 3.0 Auto 4x4 Transmission question

 
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87PathyCoupe



Joined: 20 Jun 2015
Posts: 1
Location: Bremerton, WA

PostPosted: Sat Jun 20, 2015 10:58 pm    Post subject: 87 Pathfinder Coupe 3.0 Auto 4x4 Transmission question Reply with quote

Hello! I just bought my first ever Nissan Pathfinder. I don't know much about these SUV,s but the guy I got it from says that it's a 3 speed trans. When I'm going 60 it sure seems like it should be dropping into a final drive gear. How many drive gears are there in these transmissions? And if there is 4 gears, at what speed should that 4 gear drop in at?


Unfortunately, my tach is not working so I am not sure where my RPM's are at when the tranny shift, any help with that would be appreciated, not sure where to start with that.

Please help!!

Thanks!![/img]
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smj999smj
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Joined: 22 Jan 2012
Posts: 4746
Location: Prospect, VA

PostPosted: Sun Jun 21, 2015 1:15 pm    Post subject: Reply with quote

If you have a 3-speed, then it will have 3 forward drive gears; a 4-speed will have 4 forward drive gears, the last being an overdrive gear. The 3-speed used in these early Pathfinders was a weak unit and not a desirably one, either. It will rev the engine high at the higher vehicle speeds and will not provide very good gas mileage at those speeds, as well...not that any WD21 offered particularly good gas mileage.
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2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
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1987PathyCoupe



Joined: 08 Sep 2015
Posts: 2
Location: Bremerton, WA

PostPosted: Tue Sep 08, 2015 10:37 am    Post subject: Reply with quote

Thank you very much SMJ!

Do you know if a newer transmission 1990+ will bolt up and work fine? Or do you know of a better year transmission that might work?

Thanks!
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smj999smj
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Joined: 22 Jan 2012
Posts: 4746
Location: Prospect, VA

PostPosted: Wed Sep 09, 2015 4:39 am    Post subject: Reply with quote

The later, 4-spd. transmissions were electronically controlled by a TCM whereas the 3-spd. was not, so there's that big obstacle to overcome.
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2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
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stangkilla1



Joined: 12 Sep 2012
Posts: 19
Location: saltspring island,b.c, canada

PostPosted: Wed Oct 26, 2016 10:02 am    Post subject: Reply with quote

ok first of all my pathy 89 se v6 4x4 has the 3speed with power button and with lucas trans fluid ive got 280,000km and its one of the strongest trannys ive ever had the pleasure of using.second the only way to improve your trans is to get a manual valve body and some good trans fluid and change the filter and your trans will work pass the motor. 3rdly no you cant use a newer trans to older wd21 truck it wont mate unless you go to advance adapters they make a conversion plate. rugged rocks offroad is only pathy aftermarket company i know thats really good.
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