Can i use auto harness and auto ecu with 5speed trans
#1
Can i use auto harness and auto ecu with 5speed trans
Is it possible to use both auto ecu and harness from a 98 tacoma with the 5 speed trans from my 91 pickup? Need help asap!
#3
Ive heard you can just make the ecu think the truck is in neutral then your good to go but im not completely sure how and i dont feel like spending anymore money on the swap
#6
Registered User
Depends on your definition of "works". It'll run and function but you will get a check engine light that won't go away.
In some states that is an automatic failure for smog.
In some states that is an automatic failure for smog.
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#8
How are you guys "fooling" the auto ecu? I assume you are connecting the NSW from the ECU to the 7.5A Start circuit?
Or is there more.. I just wired a swap but wasn't able to see it fire. It is not getting spark and i'm wondering if I still need to fool this ECU somehow. I haven't had a chance to trouble shoot anything else but trying to do some homework till I can get back to the shop.
Or is there more.. I just wired a swap but wasn't able to see it fire. It is not getting spark and i'm wondering if I still need to fool this ECU somehow. I haven't had a chance to trouble shoot anything else but trying to do some homework till I can get back to the shop.
#9
Registered User
As for making the auto ecu work with the manual tranny you will have one code po1700 which will not go away because of the lack of a rear trans speed sensor resulting in a check engine light but will not effect the engine systems.
The others can be fooled with 3 resistors for the shift solenoids and the trans temp sensor just plug it back into the harness.
Jump neutral and park wires or run them to a clutch cancel switch I never did.
#10
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The wiring diagram is identical between the 98 auto and 98 manual ECU's I have looked, if your getting a check engine light I would like to know what code for.
As for making the auto ecu work with the manual tranny you will have one code po1700 which will not go away because of the lack of a rear trans speed sensor resulting in a check engine light but will not effect the engine systems.
The others can be fooled with 3 resistors for the shift solenoids and the trans temp sensor just plug it back into the harness.
Jump neutral and park wires or run them to a clutch cancel switch I never did.
As for making the auto ecu work with the manual tranny you will have one code po1700 which will not go away because of the lack of a rear trans speed sensor resulting in a check engine light but will not effect the engine systems.
The others can be fooled with 3 resistors for the shift solenoids and the trans temp sensor just plug it back into the harness.
Jump neutral and park wires or run them to a clutch cancel switch I never did.
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