Skip the auto shop - Our mechanics make house calls

Q: Won't run right since my son replaced the thermostat

asked by on

Starts fine then dies and runs rough afterwards

My car has 190000 miles.
My car has an automatic transmission.

If the engine was running without a problem before work was done then the repairs most likely have caused the problem. You should have the engine scanned and the entire engine checked for loose or disconnected connectors on the mass air sensor or coolant sensor. If you need help then contact a mechanic like one from YourMechanic.

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: Installed a new thermostat and now it won't hardly idle and Boggs down when driving

Hi there: Typically swapping out the thermostat only won't be the source of idle issues. However, if your 96 Ford F-250 overheated which stimulated the thermostat change, it's possible that other components may have been damaged. Some things you might...

Q: I just had a water pump put in 2 weeks ago, now the fan belt is squealing and the water gauge is jumping around.

The fan belt squealing may simply be related to the belt just needing to be adjusted or lubed with some belt dressing. Your temperature gauge jumping around is a cause for concern and may or may not be related to...

Q: squealing, losing power

Hello. From the symptoms you describe, it sounds like you may have some sort of mechanical failure. A squealing sound can be caused by many things, but none really that should cause your vehicle to lose power, unless the sound...

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 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.