Why does my car shudder at 40 mph?
The only issue was that the car would shudder pr even buck a bit ONLY at speeds around 40 MPH and ONLY when the accelerator was backed off of slightly and when an attempt was made to feather the pedal and maintain a steady speed. This was traced back to a light film of corrosion on a coil wire.
Why does my Ford F150 shudder at 45 mph?
The only issue was that the car would shudder pr even buck a bit ONLY at speeds around 40 MPH and ONLY when the accelerator was backed off of slightly and when an attempt was made to feather the pedal and maintain a steady speed. This was traced back to a light film of corrosion on a coil wire. Cleaned that off and the problem went completely away.
What to do if your car shudders when accelerating?
Finally, I bought 2 X2 oz of the anti-shudder compound. from Amazon and had my ATF (Dextron6 for the GM transmission in my car) changed for ~$450. The problem is gone completely and has not reemerged.
What’s the vibration frequency of a TCC Shudder?
If TCC shudder is present, a vibration peak will appear at approximately 43Hz +/-3Hz. (Fig. 18) If the vibration frequency follows engine, tire, or driveshaft speed, then it is not a TCC shudder vibration. An alternative diagnostic for TCC shudder is to road test the vehicle and monitor commanded and actual TCC slip speeds.
The only issue was that the car would shudder pr even buck a bit ONLY at speeds around 40 MPH and ONLY when the accelerator was backed off of slightly and when an attempt was made to feather the pedal and maintain a steady speed. This was traced back to a light film of corrosion on a coil wire.
The only issue was that the car would shudder pr even buck a bit ONLY at speeds around 40 MPH and ONLY when the accelerator was backed off of slightly and when an attempt was made to feather the pedal and maintain a steady speed. This was traced back to a light film of corrosion on a coil wire. Cleaned that off and the problem went completely away.
When does the torque converter start to shudder?
It generally occurs at part throttle and light acceleration, between 15 and 50 miles per hour, just before the shift to one of the top gears where the converter reaches “lock-up.” Since it is temperature-related, it tends to happen on hot days, after idling in traffic for long periods of time.
How can I test my car for Shudder?
An alternative diagnostic for TCC shudder is to road test the vehicle and monitor commanded and actual TCC slip speeds. Road test the vehicle under light throttle acceleration at 55-65 mph (88-104 km/h) during steady state driving when the transmission is not actively shifting gears and monitor the following GDS2 parameters.
What makes the engine go away at 35 mph?
Around 35 mph (common street speeds) the engine will sometimes surge with noticeable tach fluctuations. Pressing further on the gass pedal will make the surging go away. The throttle position sensor change did not help. Would like to get this fixed if possible.
What’s the average speed of a 2004 Ford F150?
I have a 2004 Ford F150 FX4 and I’ve been having a (hopefully) minor problem for the past 15k miles or so. At normal city driving speed, 45-55 mph, Big Red (that’s her) tends to shudder a bit.
What happens if you run a car at 40 mph?
The engine will continue to rev as the car tries to accelerate above that speed, but the car will not be able to shift into gear for further speed. Continuing attempts to accelerate can result in severe engine damage. The car likely would still run fine at lower speeds, but it should be taken to a mechanic immediately.
How can you tell if your transmission is bad at 40 mph?
If you’re driving 40 miles per hour and think the transmission might be going bad, check for these several symptoms. A bad transmission often will kick violently when trying to change gears. As the car approaches 40 mph, the RPMs will increase in the engine. When the transmission shifts, engine noise usually will quiet down, and the RPMs will drop.
What happens when you shift gears at 40 mph?
A bad transmission often will kick violently when trying to change gears. As the car approaches 40 mph, the RPMs will increase in the engine. When the transmission shifts, engine noise usually will quiet down, and the RPMs will drop.
Around 35 mph (common street speeds) the engine will sometimes surge with noticeable tach fluctuations. Pressing further on the gass pedal will make the surging go away. The throttle position sensor change did not help. Would like to get this fixed if possible.
Problem Description. A shudder or vibration may develop while driving at speeds between 35 and 40 MPH. Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter. It is recommend to replace the torque converter and install an updated powertrain control module (PCM) to correct this concern.
What makes a torque converter shudder at low speed?
Torque Converter Shudder Problems. A torque converter is the fluid coupling between an engine and transmission that allows the engine to idle at low speed without engaging the transmission. A torque converter uses an engine-driven turbine (fan) to push fluid through a matching turbine attached to the transmission.
What causes Acura MDX to shudder at 35 mph?
Acura Acura MDX Shudder or Vibration While Driving at Speeds Between 35 and 40 MPH Problem Description A shudder or vibration may develop while driving at speeds between 35 and 40 MPH. Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter.
Problem Description. A shudder or vibration may develop while driving at speeds between 35 and 40 MPH. Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter. It is recommend to replace the torque converter and install an updated powertrain control module (PCM) to correct this concern.
What does it mean when your car makes a droning noise?
Your car makes a droning noise This droning noise doesn’t change pitch or volume while turning, but it’s louder as you accelerate. What it could mean: This noise may be coming from your tires—particularly if they’re old or of poor quality.
What does it mean when your transmission is whining?
Whining indicates a problem with the transmission fluid pump and could be due to a low level or a failing pump. Humming is usually an indication that there is bearing going bad in your transmission, but can also be confused with carrier bearings and wheel bearings so make sure to check all those bearings before jumping to conclusions.
Acura Acura MDX Shudder or Vibration While Driving at Speeds Between 35 and 40 MPH Problem Description A shudder or vibration may develop while driving at speeds between 35 and 40 MPH. Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter.
What to do when your Mercedes goes into limp mode?
You may also get a check engine light if your transmission goes into limp mode. When a Mercedes-Benz goes into limp mode, it only operates in second gear and reverse only. When you put it in gear, you may also feel a bang as transmission engages. The first thing you should try is to check the transmission fluid level.
Whining indicates a problem with the transmission fluid pump and could be due to a low level or a failing pump. Humming is usually an indication that there is bearing going bad in your transmission, but can also be confused with carrier bearings and wheel bearings so make sure to check all those bearings before jumping to conclusions.
When do you feel the shudder in your car?
The shudder vibration may be noticed mostly during light throttle acceleration of 30-64 mph (48-104 km/h) during steady state driving with the transmission not actively shifting gears. It also may feel like driving over rough pavement or rumble strips.
What are the signs of a bad drivetrain?
Common signs include intense car vibrations and abnormal noises, like clunking, rattling, and scraping, coming from under the vehicle. 1. Intense Vibrations from Underneath the Vehicle 2. Abnormal Noises 3. Turning Problems 4. Shuddering During Acceleration Average rating from 130,153 customers who received a Vehicle Drivetrain Inspection.
What happens when you drive at a constant speed?
While driving at a constant… It acts like a dirty or clogged fuel filter or a slip in the tranny. The check engine light is not coming on and there is no codes available.
How to calculate the speed of a car?
if you are in a plan going 140 miles an hour how do you make observation from an airplane to determine the speed of a car on the road. needing speed = distance /time. Distance = speed x time. Time = distance/speed.
Why does my truck shudder when I go up a hill?
If I am going up a hill, the shudder occurs at a lower speed, depending on how steep the grade is. I did a tranny flush about 8k miles ago and it did not have any noticeable affect.