Skip the auto shop - Our mechanics make house calls

Q: Car vibrares for a second when holding the throttle

asked by on

Hi I have a 95 Mercury Cougar XR7 when I drive around and around 40 miles per hour the car starts to vibrate but when I let off the throttle it goes away I don't know what's wrong with it even though the transmission shifts smooth

My car has 80000 miles.
My car has an automatic transmission.

This is a problem with the torque converter chattering. The torque converter on these cars will start to lock up around 40 to 45 miles per hour and when the internal clutches in the converter start to go bad they start chattering. Try to put your car in drive instead of overdrive and see if the problem goes away. If it does then you know the torque converter is bad and will need to be replaced. Sometimes a transmission flush will help eliminate the shutter for awhile and you could try that first but it may not work if the converter is too far gone.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Safe Mode is active on my truck.

Hi there. Your vehicle should have an AODE or 4R70W transmission. In this transmission, in the event there is a power loss to the transmission or if the computer shuts off the power to the transmission, the default gear is...

Q: Erratic RPMs, 1995 BMW 318is

Hello there, there are a few possible causes for your 1995 BMW 318is to have a fluctuation in the RPM's. The most common are a vacuum leak, oxygen sensor, throttle sensor, exhaust leak, or the fuel pump. I recommend have...

Q: cannot figure out how to use the tensioner pulley for serpentine belt removal

Hello, and thank you for writing in. We currently do not have videos available to share with you, however we can do our best to walk you through the process and how the pulley works. What you see when you...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...