Awesome-X

I wanna put stock whatever back in my car but I'm not sure what it is. I think its TPI so I took a pic to see if you guys could verify it..I think its an awful lot of wires for tbi and I know it wasn't carbed. There's also a few on the other side. I'm just glad they didn't cut it all out when they did the conversion..wonder if the tpi's pump is still in the tank lol

Awesome-X

Anyone? at all?

snowman383

the one three prong plug looks like ether a maf or a tps sensor plug..the others look like they go to the a/c lines that ran on the frame..tps sensor on a tbi would be on the driver side of wiring harness..i will take a pic tommorrow in the light..i have not put my harness in yet for my tbi so you can see it

Awesome-X

Alright that works thanks alot!

kcallais

Depending on what year, 88 and earlier will have a 9th injector plug, and the 89 and later wont. There will be a 3 pin plug next to a square 4 pin plug. Thats the TPS and IAC respectively. The MAF is a 5 pin plug. CTS will be 2 pins, one yellow and one black. Locate these, and it should be a TPI harness.

Pocket

iTrader: (24)

Check the numbers on the ECM, if it's still there

You can also compare C100 pinouts as TBI had a unique layout
You're going to have a hard time telling if its TPI/TBI/V6 just from the harness unless you know what each plug is as you look at it or can find 8-9 injector plugs

Also, if its the 87 in your avatar then its original carb, TPI or V6. TBI wasnt introduced until 88

Thinking about it it looks like a TPI harness, namely from the pair or A.I.R. diverter connectors which the V6 didnt have

tom86iroc

iTrader: (1)

that pic looks like tbi not tpi there's no injector wires or such and what are those lines with the clamps on them where do they go they look like fuel if so tpi ran on the driver's side not the pass side

Pocket

iTrader: (24)

Carb cars were the only ones with pass side fuel lines

By the stupid pinch clamps, Id guess those are emission lines rather than pressurized fuel lines

The OP's pic is not the best, maybe the injector wires were cut off or are on the opposite side of the engine

Awesome-X

All wires are still attached, none have been cut. It was originally a 305, not a V6 and it wasn't originally carbed. I dunno what work was done after we got it I was only 14 and dad did all the work to it all I know is that he converted it to carb. I picked up all the MPFI stuff for $50 a few days ago and I'd like to put it on, but there arent any wires that go to the injectors so unless there was another little harness that attaches to the main one..well I dunno really.

tom86iroc

iTrader: (1)

it was TBI then NOT tpi

Awesome-X

Alright well will any GM throttle body and intake fit on this then?