mxkite24

alright, got it running, but my tps is still only reading 125, no matter where it really is.
I am also having to jump my fuel pump in the diagnostic box to get it to turn on.
Thank You!

curly

iTrader: (25)

You have two common problems, both from not reading the directions or searching on this forum.

1. You do not have a variable TPS on your '93. Until you upgrade to an automatic, BMW, etc. unit, you have to keep it unplugged and use MAP based tuning, which really does work great.

2. You did not unplug the ST fuse like the directions clearly state, and you blew the circuit for the fuel pump. You'll need to buy and solder in a replacement resistor to fix it, or keep it jumpered, which is super annoying.

mxkite24

Never ran with st sig
If previous owner of ms ran it with the fuse in, would that still screw me up?

curly

iTrader: (25)

Yes, the circuit is all in the MS, if he blew it, it's still blown on your car.

rndmheroxx

iTrader: (1)

Also your flood clear TPS value is likely lower than what you have your TPS "Calibrated" to on your MS.

GV1390

iTrader: (2)

Bump.

Car is a 90 with MSPNP9093 (I'm the second owner of MS)- ST Fuse is disconnected and was before install.

I'm having similar issues. I have the Wells TPS201. It reads like 128 no matter what it was at. If the two grounds on the head are on, the fuel pump will not go on, if they are disconnected it stays on. Also, if the grounds are off the MS turns on with ignition off, it you turn the ignition on the MS turns off- opposite when grounds are on. To add to it, the MS will not read my GM IAT, coolant temp (even though its on my cluster) and TPS. On top of that, with my ignition on my oil gauge reads pressure, turn the car on and it reads zero when it actually does have oil pressure. I cleaned the main ground strap on the back of the head and even added another ground to the block, still the same outcome. Any input would be great as I'm scratching my head here. Thanks!

Sorry for thread jacking! lol

-Gennaro

Braineack

iTrader: (62)

how many god damn "I have no idea how to wire three simple ******* wires" threads are we going to have in one month?

GV1390

iTrader: (2)

The three TPS wires are wired correctly.

Braineack

iTrader: (62)

your whole car sounds like it's wired like dick and you're wondering about just your TPS issue?

GV1390

iTrader: (2)

No, was referring to your three simple wire comment.

The only things I wired in from when I last drove it with the old motor/stock ecu are: TPS and IAT. Other than that, I extended the wires for the coolant re-route, thats it.