90 throttle body on a 2g help

[jpmxrider489]

I just baught a 1990 throttle body. I know i should of done more research before the purchase. I know the 91-94 swap is easier. Is there anyway to get this throttle body on the car? RRE has a write up but everyone says not to mess with a 90 throttle body? I dont know if this helps but i am getting dsmlink in less than a month. I dont want to sell it and buy another. Any tips and tricks would be great. I have just uploaded the pictures of the throttle body I have.

 

[ozz9186]

all I know about the difference is the plugs I belive

 

[V12 Killa]

Most tuners use the 91-94 for the sole purpose of still being able to keep your emissions (4 plugs).

 

[jpmxrider489]

So all i have to do is wire a plug in? The 90 throttle body has 2. Do I use my 2g tps? Can i make this work with dsmlink? Whats the reason people say that a 90 wont work?

 

[snowborder714]

The '90 has a different ISC motor, which is why most people always recommend getting a '91-'94. The '90 ISC always seems to cause issues, and I have yet to see a proper wiring diagram on how to use one in a non-'90 car.

The '90 has 4 vacuum ports - 2 on top and two on the side.

No, you can't use your 2g TPS (you can in any '91-'94 throttle body). The '90 TPS is different.

Another issue is if you try to rebuild it, you need two different size shaft seals. And you can't easily do an FIAV bypass/block off seeing as the FIAV is one with the throttle body.

 

[jpmxrider489]

So am i basically screwed? Or is it possible?

 

[snowborder714]

It might be possible, but I've never heard of anyone doing it successfully. Granted, any time a '90 throttle body is mentioned I usually turn away

 

[jpmxrider489]

I saw you posed in this link. I believe he was doing the same as me. So do i have to wire a plug? Should i just sell it and buy the right one?

http://www.dsmtuners.com/forums/newbie-forum/407102-90-throttle-body-tps-swap.html

 

[SrKegler]

I'd just sell it and get the right one.

 

[snowborder714]

^Same.

I have no idea if that guy ever got his working. Might be worth it to ask before you look for another.

 

[jpmxrider489]

Im real reluctant to sell just because I baught it for a reason. So this ISC motor, what does it do and why does it normally cause problems? Could I fix this with dsmlink?

 

[snowborder714]

The ISC motor helps regulate the idle of the car. If it is broken or missing, the car can idle very poorly.

The '90 model is just a different unit than the rest of the years use. I don't know how it's wired and if it even works the same as the other years. If someone has successfully used one in a later year car, I'm unaware of it.

No, link can not help you fix that.

 

[jpmxrider489]

Ok thanks for the help. It wasnt the news i wanted to hear but it helped.