Skip the auto shop - Our mechanics make house calls

Q: Car shudders after spark plug replacement

asked by on

I had the spark plugs on my car replaced with the OEM motorcraft ones. Ever since I did this, the car has been shuddering. Also, the AC stopped blowing cold air. What could be wrong?

Hey there, thanks for writing in about your 2009 Ford Flex. If you had the problem only after the spark plugs were replaced, then you may have damaged one of the plugs when you put it in. If Check Engine Light comes on, then you may have misfire. The A/C should be checked to see if a wire got disconnected during the work you have done. If you want to have this looked at, a certified professional from YourMechanic can inspect the shuddering issue and let you know what needs to repair.

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

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: Mileage is very low;

If you have not had any maintenance done then have a complete computer scan test done to see if any codes are present. Perform any maintenance needed like air filters, fuel filters, and oil changes. You didn't mention the mileage...

Q: does the repair include coolant recycling and line drying

Refrigerant cannot be charged to an empty system without first thoroughly evacuating the system, preferably down to 500 microns. Therefore, if you see a price quoted for charging an empty system, of course that includes a proper, professional and complete...

Q: Hello my name is Ian and i have 2009 Infiniti G37. I've been having some issues with my rear driver side TPM for a few months now.

Hi there. Is the TPM light on steady or flashing? If it is on steady then there is a leak somewhere. This could be a slow leak that may not have had the proper time dedicated to determining its location....

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...