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rpmdiag, Tech and Instructor
Category: Chevy
Satisfied Customers: 8150
Experience:  Since 1975
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2002 cavalier will not go over 35 mph, check engine light

Customer Question

2002 cavalier will not go over 35 mph, check engine light has been on for a long time prior, transmission fluid clean, cat converter replaced year ago with aftermarket cat, transmission appears or acts like it will not shift up to higher gears to get normal speeds. car has 170,000 miles. 2.2 engine.
Submitted: 1 year ago.
Category: Chevy
Expert:  rpmdiag replied 1 year ago.

Hi, welcome to Just Answer. I’m Ron and I’ll be helping you today.
Before we get started though, Please understand that I don't know
your skill level or tools you have to assist us. Also understand that
I can't see, smell, hear, or touch the vehicle either, so patience is
appreciated. JA is a great Q/A site, but it does NOT replace a
repair shop.
My goal is to make you happy and get a great rating in return for
my time. Sometimes I have to give you bad news that I know you
didn’t want to hear, so please don’t shoot the messenger.

So you know that it is time to scan the computer for codes and data. there are a number of things that can be causing this from the computer to the fuel pump to a bad/plugged CAT if you're running too rich. Always find out why that light is on when it comes on, this only leads to more expensive repairs later on. Let me know what the codes are and we'll go from there.

Thanks, Ron

Expert:  rpmdiag replied 1 year ago.

Just doing a followup to see if you needed any thing else.