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Old 01-29-2008, 12:40 AM   #1
mkiiisupra
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Default 1990 ecu paired w/ a 1986.5-1989 engine

Any complications with this? found out the engine in my 1990 supra is from a pre 90 and i know 90 was when supra changed alota stuff...

Mainly refering to the TPS does the 89 and 90 have the same resistances? becuase they TPS are of diffrent designs.
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Old 01-29-2008, 05:54 AM   #2
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I have no idea.
I put a 90 wire harness and ecu into an 88 car, but I think I used most of the 90 sensors.
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Old 01-29-2008, 06:04 AM   #3
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It won't work right the ecu's are engine coded.

From what I understand anyway.

Find out what year engine you have.

Thats the ecu you need.
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Old 01-29-2008, 06:13 AM   #4
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well if that is the case erm my ECU only throws a code with one componant, the TPS which is pretty busted up, and currently replacing it. I cant seem to find info on pre 90 resistances for the TPS, i mean if resistances are the same then......

One thing i noticed was MKIII Supra Graveyard has the 7mgte auto ecu/ect all grouped together.

Why i bring this up is my TPS part number is for a 86.5-89... and the 90 sensor doesnt fit the same, the plastic bit on the inside is verticle instead of horizontal if i remember right.

I guess ill just install it and see if engine code goes away if not you think just a throttle body from a 90 and the 90 tps will fix the problem ? lol
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Old 01-29-2008, 06:36 AM   #5
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Did some looking around on the parts catalogue.... aparntly all the throttle body are the same... so kind of confused as to why one sensor has a verticle plastic peice and the other a horizontal one

And all the TPS are the same lol..... i guess they just sent me the wrong one... ahh well

good to know i have nothing to worry about and another reason i have to not trust the toyota dealer in sumter sc...... guy even asked for my vin number to make sure it was the right part

know of a way to check to year on my engine just so i know for sure?
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Old 02-29-2008, 08:21 AM   #6
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Quote:
Originally Posted by mkiiisupra View Post
well if that is the case erm my ECU only throws a code with one componant, the TPS which is pretty busted up, and currently replacing it. I cant seem to find info on pre 90 resistances for the TPS, i mean if resistances are the same then......

One thing i noticed was MKIII Supra Graveyard has the 7mgte auto ecu/ect all grouped together.

Why i bring this up is my TPS part number is for a 86.5-89... and the 90 sensor doesnt fit the same, the plastic bit on the inside is verticle instead of horizontal if i remember right.

I guess ill just install it and see if engine code goes away if not you think just a throttle auto body part from a 90 and the 90 tps will fix the problem ? lol
How is your car now?? I didn't know that.... The ecu is grouped together???
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Old 02-29-2008, 09:15 AM   #7
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I had actually just run into the same problem with the TPS... I got one of the newer sensors (with the metal exterior as opposed to plastic) from a local pick a part (fits in the pocket, so you can't beat that price). Got home and found out that the interior's of the sensor were different. After thorough inspection and a little reading, found out resistances are the same for all the TPS's, just design difference. So I went and picked up a newer TB to go with my sensor (as I couldn't find an older sensor), calibrated it and installed it on my engine, and *VOILA* TPS CEL goes away.
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Old 04-23-2008, 02:30 AM   #8
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