Skip the auto shop - Our mechanics make house calls

Q: Wrench light came on truck has no power and the rpms constantly get higher if put in park

asked by on

Got in truck after work and cranked it up went to pull out of parking lot and truck had no power a wrench light came up on dash and if put in park the rpms climb slowly took to auto zone and wasnt showing any codes if the truck is in motion and you put in nuetral turn the key off and then fire it up again it gain power for a second or two and then goes right back to limp mode

My car has 126990 miles.
My car has an automatic transmission.

Hi there:

The wrench light is service light indicator that alerts the driver that maintenance or service is due for a component. Most of the time, scan that Auto Zone will complete uses a basic scan tool, which does not factor or is unable to download all stored codes in the ECU. Anytime the vehicle goes into limp mode, an error has been detected inside the transmission or with one of the electrical sensors or components that are critical elements of the transmission system. It’s probably a good idea to have a professional mobile mechanic complete a check engine light is on inspection; even if the light is not activated, any stored codes caused by the transmission limp mode activation will be accessible and should pinpoint the source of your Ford Super Duty’s issues.

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
  1. Home
  2. Questions
  3. Wrench light came on truck has no power and the rpms constantly get higher if put in park

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: Electronics not working after leak

Depending on the severity of the leak that your vehicle had can help determine how much damage occurred from the leak. If any of the wiring was exposed to the water from the leak it could have caused corrosion or...

Q: Cylinder five misfire code

In most cases a misfire condition can be corrected by inspecting and replacing the spark plug and ignition coil for that cylinder. For your Ford Expedition, I would recommend replacing all of your spark plugs and ignition coils to be...

Q: How long and what is the process to replace a fuel pressure sensor?

A professional mechanic would require roughly 5 hours. (If just the regulator is replaced that takes about 1 hour). Some parts, as noted below, cannot be re-used, you need a precision inch pound torque wrench, FSM instructions (and TSB updates...

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...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...