Transmission Problem? - Nissan Forum

 
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post #1 of 14 Old Feb 25th, 2009, 08:55 PM Thread Starter
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Transmission Problem?

Well I have been going through all the threads on the forum trying to diagnose a transmission problem and haven't found the answer yet, so I thought I would start my own.

I have a 98 Pathfinder and all of s sudden out of nowhere, my transmission will not shift out of third gear. P, R, N, 1 and 2 all work fine, but when I am going down the road, it cycles through first and second just fine but when it should shift into 3rd, the tach revs up to 4000 RPM and acts like it shifts into nuetral. If you let off the gas the RPM's will drop right down immediately, but it won't go into third gear.

I have a 4 speed Auto w/OD and tried running the tranny with the OD turn off, still no shift. I tried to manually shift from 1 to 2 to 3 (D) and it wil shift fine from 1 to 2, but won't shift manually into third either. I thought maybe the TPS was bad, but I bought a new one and it didn't fix the problem. I read on the forum somewhere that the TPS has to be adjusted but I am not exactly sure how to complete that process. It looks like you can rotate it backwards, but how do you know when you have it in the correct position. Again, that's assuming this has anything to do with TPS. The other thing I noticed mentioned on the forum was potentially a bad A/T Shift Computer. Don't know where it is located to even check, but this doesn't seem like it would be the problem to me since it works in all the other gears.

Anyone think they can help?
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post #2 of 14 Old Feb 27th, 2009, 12:01 PM Thread Starter
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Well I got my answer on the Transmission issues on my 1998 Pathfinder. Apparently the trans cooler in the radiator clogged and ultimately burned up the transmission. The dealer wants 3500 to replace it along with the radiator. I am thinking I might ty to find a used tranny for under 500 and just do a swap in my garage.

Anyone else done a tranny swap on thier own? I would think it would be pretty straight forward if you buy a matching tranny, but I haven't done one in the past, so I am not sure it worth the hassle.

Any advice would be appreciated.
post #3 of 14 Old Feb 27th, 2009, 01:44 PM
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yea me too, i have that very same problem with my 90 pathfinder, it would shift from 1st to 3rd and wont go into 4th, at first i thought it was the transmission fluid would want to change or something and then a mechanic told me that prolly the transmission is done.
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post #4 of 14 Old May 18th, 2009, 12:11 AM
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My 94 has the exact same problem... Haven't figured out what the real problem is... I did drain and fill the trans fluid about a month ago and it was a little brown but didn't smell burnt. So did you end up changing the tranny yourself? If so were there any problems you encountered that would be worth noting. I'm going to check the electronics in the tranny and if they are okay then I guess I'll be swapping in a new tranny... just want to make sure there aren't real "pain in the butt" issues with doing the swap. Any info would be greatly appreciated... thanks
post #5 of 14 Old May 18th, 2009, 11:54 AM Thread Starter
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Thanks for following up through the forum. No, I did not change out the tranny myself. I had a problem finding a tranny at a reasonable price to start with the closest slavage yards wanting 1K or more for what they had in stock. The further I looked into the project and the fact that it was my son's vehicle and was already 11 years old, he decided to liquidate the vehicle at a reasonable price and buy a newer car.

He ended up selling the 98 Pathy to a local dealer for $1700.00 and the dealer was going to use his repair staff to drop a new tranny in the vehicle and sell it on his lot. It was a nice little 4x4, but being 11 years old with no guarantee of additional problems down the road, my son opted to replace the vehicle.

Good Luck.
post #6 of 14 Old Aug 3rd, 2009, 06:57 PM
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i just took mine offroading for about 10 min with my brother and on are way home it would not shift to 3rd or 4th and i guessing the way to fix it is a new one but if any one else has any luck post please

89 king cab se 4x4 137k
90 pathfinder se 4x4 252k
301x amp 2 punch z 12s
post #7 of 14 Old Aug 5th, 2009, 12:13 PM
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skipping over second gear

I have the problem of skipping over 2nd gear in my '91 and '96 path's , the '91 we had the trans rebuilt , which didn't last long. the '96 i drove for a long time that way , then when my g/f's '99 broke down she drove mine for a day or two and now it only has 1st. chk'd codes and got the 1103,1st gear solenoid code. i'll have to do all the steps to learn more tho. I was wondering if anyone has ever actually fixed a trans. with this problem , hopefully by replacing the solenoids.
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post #8 of 14 Old Aug 5th, 2009, 12:16 PM
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wat would be the signs tat the tranny is finished, caus i have changed my trans fluid and filter and i dont have the overdrive gear jus t 1st to 3rd
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post #9 of 14 Old Aug 5th, 2009, 07:44 PM
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on mine i was off roading and when i went to go home it would not shift in to 3rd or 4th so after days of hope i finally unplugged the tps and started it up drove it around the block and the transmission started shifting right. so so happy afterward

89 king cab se 4x4 137k
90 pathfinder se 4x4 252k
301x amp 2 punch z 12s
post #10 of 14 Old Aug 5th, 2009, 10:04 PM
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well i kno the two cables was tampered with, so i wonder if i plug out my thorttle position sensor tat will help, but does that cause anything else to happen
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post #11 of 14 Old Oct 31st, 2009, 10:39 PM
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i have mostly dealt with domestic 2wd trannies so the space issue is not fun on my 91 4x4 pathfinder and one problem i am having is one of the plugs in the tranny i cant get out has a clip removed that no nuts or bolts its on the rear of the trans passenger side it is a electrical plug anybody who knows how to get it out in one piece i would appreciate it
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post #12 of 14 Old Nov 1st, 2009, 08:28 AM
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yea i had the same problem just pull the harness with the tranny when you pull it out

89 king cab se 4x4 137k
90 pathfinder se 4x4 252k
301x amp 2 punch z 12s
post #13 of 14 Old Nov 1st, 2009, 09:48 PM
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the problem is the replacement tranny i got out of a cash for clunker the wires were already cut to the harness so i have to get the plug out of the tranny in the truck to go into a new one and i cant complain too much the tranny came with 30 day warranty and cost me 83 bucks dropped the pan on the new one not a conventional plug just a holder for the wires goes to 3 plugs inside the pan but if anyone can tell me how to get it loose i would be extremely grateful
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post #14 of 14 Old Nov 1st, 2009, 10:44 PM
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i wish i could help but i never faced that problem but that is a steal on the tranny

89 king cab se 4x4 137k
90 pathfinder se 4x4 252k
301x amp 2 punch z 12s
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