Mustang Shakes When Parked / RPM Drops

[videodroner]

Hello Everyone... New member here.

I've been noticing a problem lately with my 2008 Ford Mustang V6.
Whenever my car is parked, the motor runs fine, but then the RPM drops down to around 500 and it does a weird shake/vibration and then it goes back up to normal.

What could be the problem? I'm afraid to drive it.

Thank you!

 

[jcopin]

did yuo pull the plugs?

i had bosch p[lugs in and read how theyre junk and just put motorcraft plugs in last night and the random engine bumpyness stopped and runs perfectly smooth now

try also cleaning the oxygen sensor/air filter

Hello Everyone... New member here.

I've been noticing a problem lately with my 2008 Ford Mustang V6.
Whenever my car is parked, the motor runs fine, but then the RPM drops down to around 500 and it does a weird shake/vibration and then it goes back up to normal.

What could be the problem? I'm afraid to drive it.

Thank you!

 

[Justin01]

haha, I'm starting to think this is just normal. Been in several new Mustangs that have done this. Mine does it when in park, and you try to roll the windows up when they are already up. My car surges, and acts like it wants to die. Don't know if it's good or bad, but I haven't had issues in the 2 years I've had it.