Ecu

[poj20]

Hi, can ECU’s be swapped from car to car without any issues? Rev2 mk2 turbo ,
Thanks in advance

[wilkie senior]

Hi They are specific to the Rev, Turbo / NA

Although those with a lot more knowledge than i can re pin in some occasions

I think there are a few thread re ECUs

Have you something in mind?

[wilkie senior]

heres one article

viewtopic.php?p=1710532

[wilkie senior]

On another forum i found this Question & Answer, (note dont tale as gospel without proper advice)

Q Anyone know if I can swap these ECU's?
I am replacing my 3s-ge powered 1993 mr2's ECU. It has the following written on it: 89661-17370 and 175700-3713.
I've found an ECU from an 3s-ge 1992 mr2, but the last part of the second number is 11 instead of 13. So it says 89661-17370 and 175700-3711.
Are these similar enough that I can use the one I found, or should I keep looking for one with the exact same numbering?


A Yes, according to toyota those are both valid ECUs for any European 1989-1999 3S-GE engine on an MR2.

Just as a heads up, you want to look at only the Toyota part number which in this case are the same, not the denso part number. As you’ve found, those ecu’s were produced a few years apart and likely have some minor pcb hardware revisions/cost optimizations but Denso still supplied it to toyota for the exact same purpose. If you managed to buy a new ecu from the dealer for your car, you would be sold one with the same Toyota part number but it would probably have a yet different Denso number just due to the manufacturing date of whatever was in stock.

[poj20]

Hi, thanks for your info, much appreciated

[poj20]

Hi, my car has had trouble starting and the mechanic says a couple of capacitors had burnt out, he’s replaced but the car won’t start at all now. I’ve spoken to Paul woods who was very helpful and said probably it is the ecu . My garage , I think are not familiar with mr2.

[wilkie senior]

Paul is a s good a source you can get

I have a rev5 NA ECU i bought when i thought it could have been that with mine, it wasnt doooh!!

Good Luck with the car

[poj20]

Hi, a turbo ecu is the one he hasn’t got!

[wilkie senior]

have you tried Steff at MR MR2?

[poj20]

Hi, I’ve discovered them this week, never knew they existed and only 40 mins from me. Yes, I’ve taken my ecu to Alex, and he can get it fixed. Thanks for all your info, much appreciated

[wilkie senior]

glad you are getting sorted

[poj20]

Hi, Alex had my ecu repaired, and after four days the car is perfect! Can’t thank Alex enough , cheers

[wilkie senior]

Great news

[jimi]

Great result