Friday, June 26, 2009

AE86 Tech #86-11: TPS swap

Swapping throttle position sensors from the later model engines into the early model engines don't do anything performance wise (as far as I know, but what do I know) and may be a real waste of time. I began using later model plugs because they look cool and much easier to deal with. Unless you like running older model connectors (I really hate dealing with clips) or you live in BFE where all the old TPS are not available from your local parts store. But if you're like me and have nothing better to do than redoing your harness on a kit car or on a race car, this could be for you.

But rather than grabbing another throttle from pick your pocket part. We'll just use the existing throttle body, since RWD t'bodies have all the vacuum tubes and waterlines in the correct position.

As you can see the difference between the two plugs. Just like in preschool, the block cannot go into the hole.

And since the rheostat is 90 degrees off it's not a straight drop in.

Here's key to the whole thing. Note the early style is on the right side.

Old style
New style

Once done, reset the TPS. And you're set.

Oh I tried to do this trick on 20V t' bodies. It doesn't work so don't try.

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