Q: The RPM is racing up and down when in park. Dashboard lights come on one at a time and then the car runs badly

asked by on

My 2006 ford 500 rpm goes up and down in park/ when I shift is gear I got a hard shift like jump into gear. Check engine light comes on then the wench light comes then all the lights come on. and then the car does not want to excellorate. I cleaned the trollel body with trollel body spray. worked good one day then back to all the above. I have no money. Please answer my question about the car. Thank you

My car has 141000 miles.
My car's transmission is unknown to me.

Hi there. I understand your situation and concern. Fist we need the codes that are stored when the Check Engine Light comes on. Any diagnostic scan tool should be able to give us the codes that are set and give us the direction we need to diagnose what is happening to your vehicle. The computer and electrical systems in vehicles are more complex than ever and are more difficult to diagnose without the proper tools and training.

With that said, your RPM fluctuation could be the result of an idle control, air leak, misfire, etc.. If you cleaned the throttle body and it worked for a day, the idle air control valve could be faulty and need to be replaced. If the idle air control valve is shorting internally, this could be the cause of the lights coming on.

The transmission feeling like it jumps into gear could be enhanced by the drivability concern and may be an indication of a broken motor mount or broken transmission mount. A visual inspection of the mount bushings should reveal which one(s) are broken.

I strongly suggest a qualified technician perform an inspection for the idle and Check Engine Light to prevent the replacement of unneeded parts. YourMechanic has several available technicians that can assist you with an idle inspection, Check Engine Light inspection, and provide an estimate and direction of needed repair.

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. The RPM is racing up and down when in park. Dashboard lights come on one at a time and then the car runs badly

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: My car got hot and it stop starting but i let it sit in the location it stop working at thrn came back crank it up and it worked

Hello, thanks for writing in. These types of issues can be frustrating and hard to diagnose. Most of the time though this will be caused by a fuel system problem. It can either be a failing inertia switch, a failing...

Q: Tires making noise and vibrating

It sounds like one of your wheels has come lose. I would check all the lug nuts and make sure none of them are loose. A licensed mechanic can come out and help you perform this and further inspect the...

Q: Engine loses power occasionally

First thing you'd want to do, if you haven't already, is to change the fuel filter. If you did, you'd want to check the catalytic converter, because when the catalytic converter starts to clog up, it can't exit the exhaust...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...