Q: Car shakes in idle and reverse

asked by on

My 1966 mustang has driven pretty well for the 2 years I have had it. Recently I changed the oil pan gasket and valve cover gaskets. A few days later I noticed when I would put the car in reverse i could feel something was off. It seemed to be running rough and would shake. I only notice it when in park and reverse. I changed the motor mounts and the harmonic balancer. The issue is still present. When in drive everything feels ok and it shifts through the gears just fine. I also changed the spark plugs as they needed it but that has not resolved the issue. Had a mobile mechanic come look at it and pretty much wasted an HR of time and found nothing and cost me nearly $200. Any ideas?
My car has an automatic transmission.

Hi Cyrel. Thanks for contacting us today. To be honest, there could be multiple issues going on here. It’s more than likely that you have a loose or damaged vacuum line or your ignition timing is off. A damaged torque converter (on an automatic transmission powered vehicle), could cause this type of vibration. I would recommend an onsite inspection, but since it was a waste of your time and money, you might want to consult with a local mechanic or Ford performance expert.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car shakes in idle and reverse

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: Will a 5.7 hemi from a 2011 charger fit a 2002 ram 1500 quad cab that had a 4.7

Hi there. Unfortunately, this type of engine swap would most likely require some major fabrication with motor mounts, a new or reprogrammed ECU and other enhancements most likely to work correctly. Since we don't offer this type of service, it...

Q: 2004 Ford Explorer stuck in 4x4 high

Faults in the tires and wheel bearing are not related to the failure to shift out of high. Wheel bearing service can be scheduled at YourMechanic's wheel bearing repair service page. Some reported fixes for failure to switch between high...

Q: Q: Shifter will not go into gear

Hi there. This can be an issue with your shift linkage being loose or not correctly adjusted. It also can be something malfunctioning inside of your transmission. I suggest having a certified mechanic, such as one from YourMechanic, take a...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.