Skip the auto shop - Our mechanics make house calls

Q: High idle, loss of power, overheating

asked by on

My car has been idling high. While I'm driving, it seems to lose engine power and gets a bit overheated. However, the temperature gauge is showing normal operating temperature. I had the transmission fluid and coolant levels checked and they are at appropriate levels too. What should do to improve the way it runs?

Hello. Thanks for writing in about your 1994 GMC K1500 Suburban. A dirty throttle body will cause the power loss and RPM fluctuations. Also, a thermostat opening slow could be the cause of your overheating concern. This should be checked to see if the thermostat gauge is returning readings that are inaccurate. If you want to have this looked at, a certified professional from YourMechanic can come to your car’s location to diagnose your vehicle’s loss of power and overheating.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. High idle, loss of power, overheating

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: The A/C quit.

The problem may be a cycling switch or an A/C compressor clutch problem. The system would need to be tested for power to the compressor coming from the controls inside the truck. You do not need to go to the...

Q: Why my car may be overheating

Hello - I think your observation is correct, your engine is definitely overheating. The cause could be one of several things - low coolant level, failing thermostat or water pump, clogged radiator, radiator fan not coming on due to a...

Q: Car does not accelerate when pressing gas pedal, 2002 Suzuki Vitara

Hello there. This is a usual issue for a 2002 Suzuki Vitara. There are a few possible causes for the lack of power and engine surging. The most likely would be the throttle plate, throttle cable, MAF sensor, vacuum leak,...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.