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Help Id Ecu With This Part # Md166262

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sweet97

15+ Year Contributor
2,386
18
Mar 6, 2004
auburn, New_York
I took it from my running '91 AWD that I am parting out. The car was manufactured in June of 1990. I was told by a yard it would work in a 90 or 91 and an owner of a 90 said 90's were a 1 year only. I want to sell this but need to know what years and models it will fit. Thanks, Mark
PS: what is a fair price?
 
CAPS reports the following 1G manual transmission ECU part numbers and their respective manuf. dates:

MD145903 -- 03/89 to 06/90
MD166262 -- 06/90 to 06/92
MD193299 -- 07/92 to 05/93
MD304484 -- 06/93 to 05/94

Unfortunately, it looks like there is some overlap in the 06/90 production dates, so if it is going into a car built in 06/90, it may or may not be the right one.
 
Rob, Great info! I guess I need to estimate the years and the part #'s will have to match. Thanks, Mark
 
tigerstalon said:
CAPS reports the following 1G manual transmission ECU part numbers and their respective manuf. dates:

MD145903 -- 03/89 to 06/90
MD166262 -- 06/90 to 06/92
MD193299 -- 07/92 to 05/93
MD304484 -- 06/93 to 05/94

Unfortunately, it looks like there is some overlap in the 06/90 production dates, so if it is going into a car built in 06/90, it may or may not be the right one.

I have teh md 145903 part number so all i have to do is swap the pins 14 and 6 and it will work in a 91 fwd tsi thats is what your saying
 
I just bought an ECU, 145903, sockeed for my '93. I swapped pins #6 and #14 on the large harness for my car. Haven't gotten the chip yet but that's what I was told to do. Mark
 
My '93 has the sme # ECU but it is not an EPROM unit.
I bought a '90 ECU, #145903 that was refurbished and socketed so I can run a www.dsmchips.com stage 3 chip. I will be refining my tuning with this keydiver chip as DSMlink is out of my league. The dsmchip continues to be upgraded. Mark
 
I know this is an old thread but I just bought an eprom with MD166262 and it is an for sure eprom but i dont know if i will have to do the 90 to 91 conversion no big deal but doesn anybody know if that computer was a 90??? i see the manufacture dates for this one overlap..... ????
 
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