Q: Why does my Car idle at 1500 and struggle to go faster than 25mph.

asked by on

I have been having some issues with my car this past week. One day I got in and started it like I normally do and as I was driving how the neighborhood I felt as if the front of my car was shaking. I couldn't go past 25mph and the check engine light came on. This has happened before but it eventually stopped doing that and drove like normal. Now it's acting up again. When I start my car the engine takes a while to heat up and I idle at 1500 or more while in park. After waiting for about 10 minutes the engine temp is in the middle and I idle at 500-600rpm but my check engine light is still on. I haven't changed my oil in awhile, I'm over due for an oil change. I was supposed to change it at 126271 miles but I haven't and now I'm currently at 126983 miles. Could changing the oil fix my problem or is there a different issue?

My car has 126983 miles.
My car has an automatic transmission.

When the check engine light (CEL) illuminates, and stays on, you should have the engine problem diagnosed in a check engine light diagnostic. An illuminated CEL means that the computer controlling the engine has detected a fault or faults. If the faults go unaddressed, it is possible for other vehicle components to be be damaged or wear out early. The specific cause of the high idle and lack of acceleration will be revealed in the Diagnostic Trouble Codes that are downloaded during the CEL diagnostic. As far as the engine being slow to warm, that could be due to a stuck open cooling system thermostat although, of course, there is always the possibility of a malfunction in the temperature sending unit and/or dash gauge. Your interests will be best served if you request a check engine light diagnostic after which the Mechanic will be in a position to inform you of the exact required repairs and their cost.

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. Why does my Car idle at 1500 and struggle to go faster than 25mph.

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: Have 300RX lexis 2001 it misfires ,slow accleration ,loss powder, I have had full tune-up with all sensor and plugs replaced.

Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft...

Q: Where is the canister purge selinoid located at?

The EVAP system is located in the rear of the vehicle near the fuel tank, which may be part of your problem in the event there is a leak in the EVAP system. Your car has a small purge valve...

Q: My car has been overheating and now I see a crack where the radiator cap is

Claimed by Jeff Engstrom

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...