Stevepie

Ok So I bought this 1990 Toyota 4x4 SAS'D with new lift, new shocks, 37's, new brake lines and 220,000 miles. After draining the gas, replacing the fuel filter, i finally got it running. It is having a hard time reving up. If i accelerate slowly its ok most of the time. If i rev it to 3500 rpm it revs niceley to about 5500. So checking out some of the wiring under the hood and noticed an additional red wire attached to my brown VSS wire? it is grounded to a bolt on the throttle cable bracket. I tried cutting this wire and it wont start. If i disconnect it while it is running, and try to throttle up it sounds as though it is starving for fuel and will stall. So why would someone ground this wire, how can i fix it correctly? I traced the brown VSS wire it is still attatched to the ECM. Trying to post a pic of it on here. Please help me with this problem
Also all new exhaust Cat back on truck. checked all fuel lines for blockage, kinks all looks good. Check engine light is on and getting an O2 sensor code.

Thelast83inNJ

Is this a brown with black trace wire that is the ground for TPS and runs to and is spliced into MAF(AFM) sensor ground? #4 terminal at TPS, and #3 terminal at MAF. Is the wire open and someone added extra ground? Is this the part of the wiring harness that rubs through by injectors 2 and 3? Is someone making up for weak MAF door spring?That's all I got.

iamsuperbleeder

why would someone even begin to think that tapping into a TPS sensor and grounding out a wire would be a good idea?


yeah something's screwy with that... were it me, I'd cut that ground off and reconnect the wire ends back together in the stock wiring harness

or if the plug is screwed up, go to the junk yard and grab a new plug end and cut the old one off and wire the new on in