Q: When I start the vehicle it idles at 1500 rpm and never drops down.

asked by on

I have a 1994 Ford explorer and it idles high at all times (1500rpm and up). I tried to disconnect the battery to see if the computer would reset the idle and it didn't work. I replaced a ($30) sensor on top of the intake manifold by the water inlet to the thermostat (has two prongs and is right under the air intake). It seemed like it worked for about a day then started to idle high again. When I am driving and come to a stop sign I can feel it pushing the vehicle forward and when I stop and place it in park the idle jumps way up to 2500 rpm. I am at a loss to what could be causing the engine to run so fast.

My car has 189000 miles.
My car has an automatic transmission.

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. When I start the vehicle it idles at 1500 rpm and never drops down.

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: making a grinding noise when I drive the sound seems to be coming from the rear. Noticibe all the time but more when I am turning

You will need to have the rear brakes checked first to see if brakes are worn down to metal. If brakes are okay then you will have a problem in the rear axle bearings and a mechanic can isolate the...

Q: Car jolts on starting and sometimes is fine

The vehicle may have more than one problem and would need to be thoroughly checked in order to properly diagnose the problem. I would recommend having a certified mechanic test the system's computer and perform a road test to see...

Q: Rattling noise in front of car.

Usually a small rattle is caused by a loose piece somewhere, common culprits include strut dust boots and foam insulator, wheel center caps, plastic inner fenders and splash guards that have come loose, sometimes whole pieces of a bumper or...

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 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...
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.