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Engine shuts off when attempting to accelerate from a stop

Tiny
PANDULENI MOSES
  • MEMBER
  • 2002 TOYOTA 4RUNNER
  • 2.7L
  • 4 CYL
  • 4WD
  • MANUAL
  • 250,000 MILES
This (3rz) car will start, it can idle but it will not move if you try revving it will just cut off. Fuel pump is fine, spark plugs are good, the air flow sensor is also good, but there is an unconnected plug with three wires (green /yellow, green/black, green ) in the same loom with the airflow sensor. I also don't know where it goes.
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Saturday, October 31st, 2020 AT 5:27 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

I just went through the entire powertrain management wiring schematic. The only thing I can find close is the throttle position sensor. Take a look below at the pic. Recheck to see if the "black" wire is actually dark blue /black. Also, recheck to see if there is a black wire with a yellow tracer. It can be hard to see colors when they get dirt on them.

Let me know.

Joe
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Saturday, October 31st, 2020 AT 6:59 PM

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