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Old 10-19-2011, 07:47 PM   #1
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1997 TJ auto to manual swap

Hello,
I'm new to the forum. I'm changing out my 3sp automatic for a NV3550 transmission in my 1997 Wrangler TJ Sport. So far its gone rather smoothly. I have a few questions for the forum.
Has anyone swapped out their auto to a manual like this before?

Does anyone know were I can find the backup light switch harness/jumper? I have the OEM part number, but the dealership doesn't carry it and I can't find it on ebay. I tempted to build my own harness/jumper. Any suggestions? It seem rather simple to build.

I know I have to reprogram the PCM so it knows there a manual transmission. Is this something the dealership can do?
Or is there a place I can ship it and have it reprogrammed?

Any help would be much appreciated.

Kurt

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Old 10-19-2011, 08:10 PM   #2
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Jerry Bransford did the opposite by putting a 3 speed auto into his manual Jeep. He might be able to give you some insight.

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Old 02-07-2012, 03:37 PM   #3
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how much did it cost you to do the swap?
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Old 02-07-2012, 07:42 PM   #4
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The wiring harnesses are the same between Jeeps with autos or manual transmissions. You shouldn't need to change or add any wiring for what you're doing. You'll also need to swap your engine computer for one programmed for a 5-speed. Your present ECM (engine computer) is programmed to look for a drop in RPMs once it signals the automatic to lock its torque converter which naturally won't happen once you get the new 6-speed working, which will generate a Check Engine Light. Make sure you get a ECM for a '97 with the same engine type and for a manual transmission. You can most likely find one at a good price on eBay.

By the way, as mentioned above, I converted my previous TJ (stolen last year) from a manual transmission to the same 32RH transmission you're removing. I miss the heck out of that 32RH 3-speed automatic, it was an awesome offroad and rockcrawler transmision. I LOVED that transmission... it makes me cry that you're removing yours.
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Old 02-08-2012, 09:49 AM   #5
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I want a auto.
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Old 02-11-2012, 09:58 AM   #6
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I still have the 3 speed 32RH in my garage and all the cables and attachments. Would you be interested in buying it?

Kurt
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Old 02-11-2012, 10:56 AM   #7
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Quote:
Originally Posted by Jerry Bransford View Post
The wiring harnesses are the same between Jeeps with autos or manual transmissions. You shouldn't need to change or add any wiring for what you're doing. You'll also need to swap your engine computer for one programmed for a 5-speed. Your present ECM (engine computer) is programmed to look for a drop in RPMs once it signals the automatic to lock its torque converter which naturally won't happen once you get the new 6-speed working, which will generate a Check Engine Light. Make sure you get a ECM for a '97 with the same engine type and for a manual transmission. You can most likely find one at a good price on eBay.

By the way, as mentioned above, I converted my previous TJ (stolen last year) from a manual transmission to the same 32RH transmission you're removing. I miss the heck out of that 32RH 3-speed automatic, it was an awesome offroad and rockcrawler transmision. I LOVED that transmission... it makes me cry that you're removing yours.
Jerry, he's swapping in an NV3550, which would have never originally came in a 1997 TJ. Even though I know nothing about the NV3550, my guess would be there are some differences in the connectors.

OP, your jeep doesn't need anything from the manual transmission to run. I would get the transmission in and new/reflashed ECM set, then worry about the wiring. Or do some LED tail lights and forget about the reverse lights altogether.
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Old 02-20-2012, 11:44 AM   #8
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I did it last month with a five speed from a YJ in to an auto TJ. The hardest part is mounting the clutch rest is cake. You must ground the neutral safty harnesses, the rest I just taped up. I do have my CE light on tho.

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