FITech Experiences ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HAULIN' IT · 09-20-2016, 12:07 AM

Sure! I had another inquire in a PM as well as you...I'll just put the info here.
My thinking was the same. I wanted to not have to deal with mounting a second sensor somewhere, somehow & didn't want to start cutting on wiring on something before I ever used it...both for the possibility of there being a problem, it coming back to shoot me in the foot & also, there wasn't much wire there to "get ahold of" anyway.

I started by doing a bit of research on the plugs. The "older" style TPS that looks somewhat like a triangle is what I mounted to the Q-jet years ago...it uses a regular 3 pin weatherpack plug (easy!).
The male end to go into the sensor on the FItech proved to be an easy find as well. A quick stop @ my friend's mechanic shop scored me an injector harness from some V6 that had this plug & some correct colored wiring to boot.

The female plug needed in which to plug the wires going to the FItech unit proved difficult to find. After exhausting GM wire pigtail charts, ect. I gave up & grabbed the TPS sensor from the same V6 fuel rail. (the "lollypop" type" of sensor)

I carefully ground away the round part until I had three flat blade contacts sticking straight outward from the plug, found out which pin was for what (it was NOT as it seemed it would be. The center pin was NOT the center blade) & soldered the wires from the male plug end on. Then I formed up a mold out of a paintstick wrapped with duct tape in a square shape & carefully poured in Fusor heat-set plastic glue...insulating the three bare areas from each other & sealing up the whole deal. Simple huh? Works like a charm. All I had to do was re-establish what idle & full throttle voltage was in the transmission controller once it was up & running.

If the harness/TPS plug you have for the trans. is the same plug as the FItech, you'll need to make a second one to plug the wires going to the transmission in unless someone can come up with a source/location that a female of that plug is available. Hope this helps! Lorne

09-20-2016, 12:07 AM	#11
HAULIN' IT Registered User Join Date: Dec 2015 Location: Beaver Falls, Pa Posts: 165	Re: FITech Experiences ? Sure! I had another inquire in a PM as well as you...I'll just put the info here. My thinking was the same. I wanted to not have to deal with mounting a second sensor somewhere, somehow & didn't want to start cutting on wiring on something before I ever used it...both for the possibility of there being a problem, it coming back to shoot me in the foot & also, there wasn't much wire there to "get ahold of" anyway. I started by doing a bit of research on the plugs. The "older" style TPS that looks somewhat like a triangle is what I mounted to the Q-jet years ago...it uses a regular 3 pin weatherpack plug (easy!). The male end to go into the sensor on the FItech proved to be an easy find as well. A quick stop @ my friend's mechanic shop scored me an injector harness from some V6 that had this plug & some correct colored wiring to boot. The female plug needed in which to plug the wires going to the FItech unit proved difficult to find. After exhausting GM wire pigtail charts, ect. I gave up & grabbed the TPS sensor from the same V6 fuel rail. (the "lollypop" type" of sensor) I carefully ground away the round part until I had three flat blade contacts sticking straight outward from the plug, found out which pin was for what (it was NOT as it seemed it would be. The center pin was NOT the center blade) & soldered the wires from the male plug end on. Then I formed up a mold out of a paintstick wrapped with duct tape in a square shape & carefully poured in Fusor heat-set plastic glue...insulating the three bare areas from each other & sealing up the whole deal. Simple huh? Works like a charm. All I had to do was re-establish what idle & full throttle voltage was in the transmission controller once it was up & running. If the harness/TPS plug you have for the trans. is the same plug as the FItech, you'll need to make a second one to plug the wires going to the transmission in unless someone can come up with a source/location that a female of that plug is available. Hope this helps! Lorne



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