99 xj shift slow

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Wagonman

NAXJA Forum User

Location

Republic Mo.

• Dec 31, 2014

• #1

Just picked up a 99 xj. Runs great but when it shifts from 1 to 2 it's very slow. Sometimes it'll shift @2200, other times it's all the way to 4000. Once it shifts the rest of the gears are fine. It's giving 3 codes : input speed sensor, and shift solinoid A. Anyone delta with this?

 

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thatxjguy

NAXJA Forum User

Location

Florida

• Dec 31, 2014

• #2

Did you try fixing/replacing what the codes are saying are bad?

 

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Wagonman

NAXJA Forum User

Location

Republic Mo.

• Dec 31, 2014

• #3

I checked the connection on the speed sensor for dirt like what was suggested online, and made sure the magnetic side wasn't corroded...it all looked good. I haven't pulled the pan yet, just want to get some feedback from people that may have had the same issue.

 

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thatxjguy

NAXJA Forum User

Location

Florida

• Dec 31, 2014

• #4

Well honestly it sounds to me like you might be due for a transmission rebuild in the future.

 

Tim_MN

Freakish Hand Strength

NAXJA Member

Location

Minneapolis, MN

• Dec 31, 2014

• #5

thatxjguy said:

Well honestly it sounds to me like you might be due for a transmission rebuild in the future.

Click to expand...

Based on what diagnostics ?


Wagonman, what were the exact trouble codes, by the exact numbers, that were downloaded ?

You will have to decipher the trouble codes and troubleshoot each one. Repairs may be as simple as some new, or good used, shift solenoids.

 

Last edited: Dec 31, 2014

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Wagonman

NAXJA Forum User

Location

Republic Mo.

• Jan 1, 2015

• #6

My buddy has a .mechanic shop out here and he did some research for me and he's gonna order some parts for me to start replacing the cheapest one first. I've read several posts about TPS so wasn't sure if that could be related. This is my 4th jeep and the first one I've ever had any issues with a transmission in any of them, sucks!! It's taking $$ away from my long arm kit and all of the other mods.

 

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Wagonman

NAXJA Forum User

Location

Republic Mo.

• Jan 8, 2015

• #7

So found a complete tranny 139k on it for 200....with a 90 day warranty!!! Turns out that's less expensive then what orielly wanted for the sensor, and shift solinoid. Also helps I've got great friends with lifts and all the tools I could need. Thanks for the responses.

 

kcox506

NAXJA Forum User

Location

Concord, NC

• Jan 8, 2015

• #8

Check ohms? at the TCU check the pins 22 23 24 (please google it! I'm not 100% on thos pins) Should be 11-16ohms~ each if they're good. The input speed sensor and output should read around 600ohms~ If I recall correctly.

I went through this pain recently. It turned out to be B solenoid and TPS wires were loose the connector causing some inconsistencies in Ohms and shifting.