Skip the auto shop - Our mechanics make house calls

Q: My truck shakes while idling when the heat, AC and in-cab fan are on

asked by on

My 2008 Ford F150 5.4 L runs and drives smoothly, but i just figured out that during idle and the heat,ac and in-cab fan are on the truck begins to shake. When I shut the ac, heat and in-cab fan off the truck runs perfectly and doesn't shake. My truck doesn't have Iac valve, i pulled out the throttle body and cleaned it I relearned the computer and I still have the same problem, I also changed the spark plugs and coils. What else could create the shaking?

My car has 140000 miles.
My car has an automatic transmission.

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
  1. Home
  2. Questions
  3. My truck shakes while idling when the heat, AC and in-cab fan are on

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: hi my car backfires with in 5min of it been on thank you for your help.

Hello, thanks for writing in about your 2002 Chevrolet Camaro. There are several things that can cause a backfire. Spark plug wires in the wrong location, a faulty fuel injector, a failing sensor and more. It looks like you already...

Q: How do I use the trip timer?

The trip timer allows you to keep track of how long you have been driving for. When reset, the trip timer will run anytime the car is running, and pause whenever the car is stopped. That way, you can measure...

Q: Car running and idling rough

This is a common problem on this engine. When you get symptoms such as this with this code it is caused by an issue with the variable valve timing. Most of the time it is because the timing actuator has...

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...
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...
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.