Skip the auto shop - Our mechanics make house calls

Q: my car idles high and will not shift out of first gear

asked by on

the car idles high and will got shift and sometime will not start. when it does start it will not shift I have to do it by hand and it will only go 10 mph

My car has 90000 miles.
My car has an automatic transmission.

A: Hello - there are several problems which co...

Hello - there are several problems which could cause the behavior you mention. A failed throttle position sensor can cause the high idle, and poor shift/no shift behavior you describe since the engine & transmission communicate with each other over how much the gas pedal is depressed. Any problem codes that are set (whether the Check Engine is illuminated or not) are valuable for diagnosis - most auto parts stores will read these for free for you. I would recommend having a car is hard to shift completed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose this problem, get an accurate assessment of damage and cost estimate for repairs.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Major shaking between 25mph and 55mph when slightly turning right.

Hey there: Vehicle shaking on the front end can be caused by multiple loose or worn out components on the front end. At the speeds your talking about, bad tire/wheel balance is most likely not a contributing factor; however, it...

Q: Thermostat replacement without removing throttle body -- easiest way to do?

You do not need to remove the throttle body. Once you remove the air cleaner and air inlet tube to the throttle body then drain coolant. Remove hose from thermostat outlet pipe. Remove the exhaust crossover pipe and then you...

Q: Won't hold idle - 1999 Ford F-150

Hey there. This may be a sign of a dirty or failing idle air control valve or potentially an intake air leak. The idle air control valve monitors the air intake as it is mixed with fuel as it gets...

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.