How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask K. Wiggins Your Own Question
K. Wiggins
K. Wiggins, ASE Certified Technician
Category: Car
Satisfied Customers: 2432
Experience:  AA in automotive Technology, 15+ years in the trade
Type Your Car Question Here...
K. Wiggins is online now
A new question is answered every 9 seconds

1992 chev corisa 3.1: No signal being received at the throttle

This answer was rated:

1992 chev corisa 3.1: No signal being received at the throttle position sensor. 3 wires, black, blue, gray. Which one is the power supply wire and could it be wired direct and use a shut off switch?
The Grey wire is power from the ECM. However it is only 5 volts. If you are receiving no voltage at the TPS you need to check for a break in that wire between the TPS and ecm connector. You cannot apply 12 volts to that wire as it will damage the ecm.
I'll post a wiring diagram below for your reference. If I can assist you further let me know.
K. Wiggins and 4 other Car Specialists are ready to help you