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1999 Pontiac Sunfire changing solenoids

Tiny
SAMII1
  • MEMBER
  • 1999 PONTIAC SUNFIRE
  • 2.2L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 210,000 MILES
When I start my car and put it in drive it struggles to change gears when it hits 3rd and 4th it runs great sometimes it will start off as if I had it in neutral I was told it is my solenoids don't know which one or how to replace it I can not seem to find a diagram
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Sunday, February 15th, 2015 AT 6:08 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
This happens when catalytic converter starts to clog up which lower the vacuum of the engine and fools the PCM into thinking you are going up a steep hill. Here is a guide to help confirm the issue.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Check out the images (below). Let us know what you find.

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Monday, February 16th, 2015 AT 6:09 AM

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