V6 (1994-2004) MustangsTechnical discussions on the 3.8L and 3.9L V6 torque monsters Sponsored by Optima Batteries
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3.8 auto to manual swap, almost done, just need a little help
Hey there, so this is my issue. I have a 97 3.8 (recently replaced) with a t5 (also just installed)... My problem is that when I drive, my speedometer is ridiculously far off from what I'm going, so far off that when I hit 36, the speedometer reads 115 and the governor kicks in I'm not sure how to approach this problem. also I am getting no temperature readout, the radiator fan isn't coming on, and while driving back from the parts yard today, the horn went off and wouldn't stop. what a nightmare. any help would be greatly appreciated
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I didn't, I found the speedo sensor on the trans, so I disconnected it and am able to drive as I please, but no speed readout anymore, obviously. I'm trying to figure out which part exactly I need, I may just remove the sensor and bring it straight to a parts store and ask them to match it. I replaced the temperature gauge and still no temp readout, So I put the fan on a switch until I can figure out the problem. should I replace the ECU??
I have never done the swap so not 100% sure but you could always "borrow" an ecu from someone with a manual and see if it helps. I'm sure there has to be some sort of difference between the setups as I think on auto's you can adjust with a tuner... but again not sure don't have an auto or have ever done this swap.
It's cool that you made the switch, how does performance rate now that you have the 5 speed?
If you can't figure it out, you could get a Garmin GPS with a MPH readout and forget about the speedometer.
2012 Mustang Premium 6 speed Manual
Starkey Fog Lights
5 spoke chrome American Muscle 18" x 9" wheels
Nitto 255/45ZR18 Tires
H&R Sport Front and Rear Sway Bar
J&M lower control arms
TMI adjustable tilt headrests
Gaslock LED Shift ****
Shelby door subs
Sony 200W amp
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