Q: Fast idle - 1983 Mercedes Benz 380SL

asked by on

My car has a very fast idle when you first start it up. It will idle high. But when you tap on the accelerator the idle will slow down for only a minute. Then it'll go back to the fast idle. Do you know how I can fix this?

Hello. There could be a problem with the throttle cable sticking, causing the high idle. There also could be a problem with the throttle position sensor malfunctioning, causing a high idle. Sometimes a dirty throttle body can cause this problem as well. All of these components should be inspected by a certified technician, like one from YourMechanic, who will be able to diagnose the high idle and make a recommendation for repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Fast idle - 1983 Mercedes Benz 380SL

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: Battery replaced, engine malfunction warning

Hello there. With any Check Engine Light, the first step is to have the code read to determine what system is involved with the fault. It is possible that this fault was caused by the vehicle losing power when the...

Q: Very low idling during cold start, stalling engine, 2007 Toyota Corolla

The first thing you should do is scan the engine and repair any codes. Have the fuel vapor system checked to make sure you do not have any problems with a leaking purge valve leaking vapor into the intake when...

Q: Noticed car leaking after alignment.

Hi there. It is not too common for a transmission service to cause a leak on this vehicle unless something was left loose. If there is a lot of fluid then the area needs to be cleaned and monitored to...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...