What is this connector

[Additivewalnut]

I thought it was for the MAP sensor but I still have one.... so I'm already out of ideas

 

[GoToGuy]

Did you try looking around for a connecter missing it's other half. It can't be far, within about one foot.

 

[Additivewalnut]

Did you try looking around for a connecter missing it's other half. It can't be far, within about one foot.

Yeah, there's nothing nearby. Previous owner put an edelbrock chrome air cleaner on it so I think im missing a sensor

 

[AK49BWL]

The only connector with three wires in those colors on a TBI engine is the one for the throttle position sensor. But I can see the TPS on the throttle body is plugged in, so that empty connector probably has no purpose. Kind of looks like that connector was hacked on for whatever reason.

 

[Schurkey]

Kind of looks like that connector was hacked on for whatever reason.

Exactly right. No matter which style of TPS connector the throttle body has--you've got the correct plug to make it work.

Perhaps someone replaced the throttle body or TPS with the "other" style connector, and just spliced the second TPS connector into the wire harness to make the incorrect part work OK.

 

[Additivewalnut]

Exactly right. No matter which style of TPS connector the throttle body has--you've got the correct plug to make it work.

Perhaps someone replaced the throttle body or TPS with the "other" style connector, and just spliced the second TPS connector into the wire harness to make the incorrect part work OK.

I hate the previous owner of this truck, man.

 

[someotherguy]

Exactly right. No matter which style of TPS connector the throttle body has--you've got the correct plug to make it work.

Perhaps someone replaced the throttle body or TPS with the "other" style connector, and just spliced the second TPS connector into the wire harness to make the incorrect part work OK.

Yep. OP has a 1990 which would use the larger 3 pin flat row connector; has a TBI in it from a 1991-up which uses the small round 3 pin connector. Looks like a quick strip, twist, and tape job. Easy to correct, but annoying to find.

Richard