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View Full Version : wiring up a 90 TB to 91 engine


Pimpin Dsmstyle
05-13-2005, 05:44 PM
I just looked through all of Vfaq and couldnt for the life of me locate a diagram or an explaination of how you can wire up a 90 throttle body to a 91-94 engine in a 2g. ANY HELP WOULD BE APPRECIATED.

EclipseGST
05-13-2005, 06:20 PM
You cant! The TPS sensor on the 90 only has 3 wires. The TPS on a 2g has 4.

Wizard
05-13-2005, 11:30 PM
Well, TPS on all 1g's have only 3 wires for TPS sensor. 90-94. 90 uses a different sensor with a pigtail. Not only that, but 90 uses a different setup for the ISC motor as well. But, I guess if the wire colors are the same then you could go for it. But, 90's won't work in a 91-94 without some other changes as well. The reason 2g's have 4 wires for their TPS is they integrated the idle stop switch (separate for 1g's) into the sensor.

Wiz