My 2000 Chevy Impala drives great, but when I shift from Park or Drive into Reverse, there is a thump in the transmission. Sometimes it's barely noticeable, sometimes it's very distinct and metal-sounding. I recently had the transmission flushed, so what may be the problem here?
I want to know what to expect before I take it to the dealer for service - don't want to get hosed.
2007-02-07 09:02:27 · 4 answers · asked by annar12002 4 in Cars & Transportation ➔ Maintenance & Repairs
The transmission is 3 years old - was replaced in 2003. I take really good care of my car - it gets regular maintenance: oil and filter changes, regular check-ups and such. I recently replaced the catalytic converter, exhaust manifold and the air flow sensors.
As mentioned, the transmission has been flushed about 3 months ago.
2007-02-07 09:15:03 · update #1
Sounds like and engine mount or transmission mount has cracked allowing the engine to move forward or back under the load applied to it while shifting.
2007-02-07 09:12:11 · answer #1 · answered by Timer2 3 · 0⤊ 0⤋
Sara- With the transmission in the Park position the engine will idle from 800 to 1000 RPM. This is normal. On cold days, such as we have been having recently, the engine may idle as high as 1100 RPM until the engine is warmed up. With the transmission in Drive, Reverse or Low, (2,1), the engine RPM should be about 850 to 950 RPM as the transmission has now been engaged, but the torque converter has not yet "locked" the transmission and engine together to move the car. I should also state for the "Super Techs", the transmission is not really locked together with the engine. The Torque Converter is a fluid coupling which "locks" at a certain RPM. Unless the transmission is "banging" into gear, or slipping while you are driving, it sounds like everything is normal. Just a tip though. If you have not had the transmission serviced, this would be a good time to have it done. This is a simple process by which the internal fluid filter is replaced with a new one, and the transmission fluid is drained and replaced with new fluid. Regardless of what manufacturers may state, I would recommend having this done on an annual basis along with your coolant, (anti-freeze), even of the anti-freeze is the "100,000 Mile" type anti-freeze. Its cheap insurance that your car will continue to give you reliable service. Good Luck!
2016-05-24 04:08:51 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It might be best to have the rear axle checked for oil and replace the oil if there is over 25K miles on it, there is also a possibility of a worn u-joint as well and there not to expensive but the rear axle is gear replacement is. Hope this helps, Good Luck and GOD Bless,
Jackie
2007-02-07 09:11:31 · answer #3 · answered by Anonymous · 0⤊ 1⤋
First check your trans fluid levels if low go back to where you had it flushed make them repair it. Also let them know if the trans has problems that they will be held liable for all costs of the repair. Good Luck
2007-02-07 09:12:08 · answer #4 · answered by scokeman 4 · 0⤊ 0⤋