Howdy all - I have 2003 zts, i have recently given it to my daughter to drive - she was complaining that the vehicle would surge forward while stopped at a stop light, etc. I replaced the O2 sensors, plugs and wires, still doing the same thing - any help would be greatly appreciated - thank you
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
check for a faulty /loose vacuum hose to the brake booster or a faulty brake booster diaphragm. From you description it is happening when your foot is on the brake and slowing down and there is a vacuum leak that is upsetting the mixture for the engine.
I can relate my experience with a similar noise on my 1994 car with Traction control. A electric valve in the air intake made a "Hum" or "Buzzing" noise when malfunctioning. For my car, the valve was suppose to reduce engine RPM so the wheel spin was stopped by choking off the air to the engine. So the electric valve on your engine may be getting a bad signal from the Traction control system especially since you are not applying power. Or simply the electric contacts in the part you mention are worn out and "buzzing" because the contact points are burned out and can not connect.
If the vehicle only surges when braking sounds like you have a brake pulsation. If the brakes have become overheated like when driving down a mountain this can warp the brake rotors. They will need to be machined or replaced.
Reliability of a car is all bases on experiences of owners with their respectible vehicles. In my opinion they are good car to drive for 50,000 miles, after that period they start giving you trouble. It is costly to repair it and the vehicle depreciation value is very high. Good luck
I have the same car. So far no problems with the Transmision. I had the Trans oil change out every 60 K
Sure sounds like you need to get the Transmision checked. Is the fault light on. I have invested ina fault code reader sure is worth it.
Good luck. Vilmos