Redtop 4age

[stevanj1985]

Hey guys am new here want some info on my redtop 4age can anyone help

[gotzoom?]

Like what?

[stevanj1985]

Thanks for ur response can i run a silver top tps on it

[yoshimitsuspeed]

We don't use top colors on the 16 valves because no one can agree on them.
Use either gen 1, gen 2, gen 3 or use defining features such as 7 rib largeport or smallport.

Test the TPS per the FSM of the ECU you are using if it passes it will probably work. It's only really worth trying if you absolutely can't find a stock TPS but I can't imagine that should be hard.

[stevanj1985]

Parts are hard where i am in jamaica am not a pro just learning have to explain a little more plz how to test it and its a 3gen smallport

[stevanj1985]

And am using the stock ecu

[stevanj1985]

Another question, are all 16v tps the same?

[yoshimitsuspeed]

I think the function is the same on all 16 valves but I am not positive. I am pretty sure there are at least two different connector styles just on the 16 valves.
To test them you will want to find a FSM (Factory Service Manual) for a smallport and then test it as instructed in the manual. If the Silvertop TPS tests correctly per the book then it should be okay but I really recommend not trying mods like this without a wideband to monitor the effects of the change.

[stevanj1985]

Ok thanks alot for the info

[stevanj1985]

Question? Where can i get a pic of the original map sensor for the 3gen smallport 4age

[stevanj1985]

Or how can I identify it

[stevanj1985]

[stevanj1985]

Am using this one don't know if it can work

[jondee86]

The MAP sensor 89421-12020 with the round yellow plug is the
correct MAP sensor for a TVIS bigport engine. The smallport engine
uses a 89420-12040 sensor with a black plug straight onto the sensor
body. I would expect that either one could be used with the wiring
changed to suit.



The 16V TPS rotates in the opposite direction to the 20V TPS, so they
are not interchangeable.

Cheers... jondee86

[yoshimitsuspeed]

The 16V TPS rotates in the opposite direction to the 20V tps, so they
are not interchangeable.

Cheers... jondee86

Good catch. I should have thought of that considering I learned it while trying to get my BT running on my GZE ECU.
So much to remember. So much I have forgotten.

[stevanj1985]

Ok guys good info thanks alot

[stevanj1985]

So here is wat happen to me when i got my smallport it was using a 1 Gen setup ecu, wire loom, distributor etc, but all t-vis is non knock sensor so i try to use a blacktop setup but ran into problems couldn't get it to work wasn't clearing out properly so i decided to go stock Smallport but didn't know wat some of the stuff look like map sensor etc

[stevanj1985]

Is there a pic of the original tps for the smallport part number would be a big help

[oldeskewltoy]

smallport TPS SHOULD be the same one as in the Lexus LS400

any LS400's in your local bone yards??

[stevanj1985]

Ok i didn't know that [emoji106]

[stevanj1985]

But that would still maybe hard to find cause i live in Jamaica

[jondee86]

The bigport (TVIS) TPS is Toyota 89452-28010 with a rectangular plug.
It is the one on the left in this pic.



The smallport TPS is Toyota 89452-12050 with an oval plug. This one
is also listed as the Lexus TPS.



But for the real lowdown, dig into the club4AG archives here...
http://forums.club4ag.com/zerothread?id=65337

Fkn club4AG General Tech and Jeff Lange FTW

Cheers... jondee86

[stevanj1985]

Ok thanks alot for the Info you guys save me alot of trouble [emoji106]

[stevanj1985]

Anyone have the FSM (factory service manual ) for the 3gen smallport 4age?

[oldeskewltoy]

Anyone have the FSM (factory service manual ) for the 3gen smallport 4age?

what do you need from it??

[stevanj1985]

Nothing special right now, would just want to read it to have some more knowledge on the smallport i have