Skip the auto shop - Our mechanics make house calls

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?

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • 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 takes a long time to start

Hi there. From the description you have provided, I don't believe a bad fuel rail sensor could cause the ECM (electronic control module)/PCM (powertrain control module) to set a P0335. The crankshaft position sensor could set the P0335 and cause...

Q: Do I need new gaskets when replacing the Y-pipe back?

Hi. Yes you should put in new gaskets for your exhaust system. If you do not replace the gaskets there is the potential that the old gasket will leak and cause exhaust noise. When replacing anything that has a gasket...

Q: Cannot shift out of park and the engine won't start

Hello. The shift interlock system keeps your car in park until you turn the key and step on the brake. It will not release the shifter until these two things occur. The first thing you need to do is...

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...
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...
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...