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Ron
Ron, ASE Certified Technician
Category: Chevy
Satisfied Customers: 33439
Experience:  35 years experience with ASE Certs
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My 94 Chevy keeps losing power on acceleration and won't

Customer Question

My 94 Chevy keeps losing power on acceleration and won't shift into overdrive. One day it's drives great next day it can't even spin the tires in my gravel driveway.
Submitted: 1 year ago.
Category: Chevy
Expert:  Ron replied 1 year ago.

Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

If you are sure you have proper fuel pressure and there are no exhaust restrictions then the next steps would be to scan the computer system and see if there are any fault codes setting. Post back with the results and we can work from there.

Customer: replied 1 year ago.
Got a choice 81. The 2-3 shift solenoid is bad?
Customer: replied 1 year ago.
Code
Expert:  Ron replied 1 year ago.

Can you tell me what model and engine size your Chevy is?

Customer: replied 1 year ago.
Silverado 1500. 5.7 350 tbi
Expert:  Ron replied 1 year ago.

The code 81 can be set due to any of the following,

  • Powertrain Control Module (PCM)
  • Shift Solenoid
  • Wiring

    In order to determine which is failing you need to do some testing, I have enclosed the test steps in the link below, copy and paste the lin to your browser to open the link.

    https://dl.dropboxusercontent.com/u/104923897/Code%2081%20Oct%2017.pdf

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