Okay, so I have the 3VZE in my 89 Yota DLX. My TPS has gone bad and I am in the process of fixing it. I have already figured out everything that I feel I need to know about adjusting it from the 4crawler website, although a bit confusing. So now the delema is that I ordered the new one off RockAuto.com (Awesome site) and the blades are 90 degrees different from the stock one. Now a while ago I saw an exact thread that I believe was on here about the exact same problem and how he fixed it. I wanted to know if anyone else as expierenced this same problem. Now for the baller illustration.

 

OMG!!! You're the guy that illustrated last year's Haynes Manuals!!!! hehehe...

Juuuus' kidding.....

Okay, while this seems very odd....as I've never seen this kind of thing before....I don't believe it's going to be a problem so far as the ECU is concerned and how it will read throttle position. And, I believe the thread you refer to....maybe I'm wrong....is the one where the fellow had his on "backwards".

Well, it should not matter where the plastic body of the TPS is positioned so long as the spring loaded tangs move in enough of a range that the full movement of the throttle plate is registered. I'd suggest hooking up a multimeter to the TPS....before you install in on the throttle body....and run it through the complete test. Verify that it will register the idle setting....deflect on IDL-E2....and show a full, smooth transition ohm-wise on a throttle sweep. That's is where you place the probes on the VTA-E2 terminals, move the throttle plate from closed to WOT, and the ohm meter should read a consistent upwards resistance value without any faltering or dropouts.....which is explained, of course, on 4crawler's page. This way you can get an idea of whether or not it's not defective before you install it and are stuck with it/can't return it. On the other hand, you should be able to install it on the throttle body and run this test (without out actually plugging it in to the TPS harness) and STILL be able to return it, if it's defective. Atleast, that's how Toyota's return policy works. If you plug it in, it's yours!

So, I would try that. If it reads fine on the meter, it should work fine on your vehicle.

 

Yeah, but if you think of it, to mount it you have to turn the tps to that it would be reading wide open all the time, and then when you gave it gas it would literally break the tps.

 

Maybe you're right. I've never run into this problem. I guess send it back, if you really think it won't work. Personally, I'd try it first.

 

We ordered a new TPS from Toyota for my brother's '89 22RE pickup and it was wrong also(opposite). We took his in to compare and the parts guy found a match... it was for a Celica. We know the original owner and he says it was never altered. Might be a good idea to at least take it in to find out what it is.

 

Very good point, Pistonman. Something like that would explain this.

 

hey im gonna thread jack for a minute, my friends truck runs ruff then kicks in at 3000rpm!! so i unplugged his tps and it runs way smoother and doesnt do that boost thing at 30000rpm. so i installed a new one and it does the same thing as before. any ideas??

 

There are different TPS's. The older ones (second gen) are 90 degrees off. Don't ask why......... but it will not work. I have tried.