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Lou P.
Lou P., ASE Certified Technician
Category: Chevy
Satisfied Customers: 4573
Experience:  building and driving chevy's since i was in the womb!!!! camaro and corvette enthusiest, access to factory diagrams and tsb's
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Chevy Cavalier. 04 Check engine light is on. I dont have a

Customer Question

Customer: Chevy Cavalier. 04 Check engine light is on. I dont have a code. Car seems to run fine, but it does jump a bit when hitting the brakes. ***** ***** is my name
JA: Thanks. Can you give me any more details about your issue?
Customer: The check engin light has come on 147,00 miles on the car. Unfortunately I dont have a code for it. Gas cap is tight. Car starts and runs fine for the most part. Car seems to speed up a bit when applying the brakes for some reason. Not sure if related
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Submitted: 1 year ago.
Category: Chevy
Expert:  Lou P. replied 1 year ago.

Hello, first off you can run by any parts store and they can read your codes at no charge, by the symptoms you are explaining it tells me that you have a failing power brake booster and its leaking vacuum into the engine which will give you a check engine light, and also make the engine speed up when pressing the brakes. if you start the car and press the brake you may hear a slight hissing noise that would be a dead ringer for a failed power brake booster. let me know if this helps and if you get the codes i can make sure i get you any additional info , Lou.