Skip the auto shop - Our mechanics make house calls

Q: Car overheating and losing power

asked by on

I had the spark plugs, plug wires, and coil changed before I took a road trip. While driving, the car began to shudder and hesitate when accelerating. I had most of my spark plugs changed out again. Now the car runs worse than before. It eventually overheated, lost power, and now won't stay started unless my foot is on the gas.

Were you having any problems before having the plugs wires and spark plugs changed the first time? I have seen instances where not all of the spark plugs were changed because the back 3 plugs can be difficult to reach. I have also seen plugs wires misrouted which causes them to get damaged and make the engine misfire and run poorly. The overheating could be caused by a low coolant condition out a head gasket failure. I would ask for help from one of the mechanics at YourMechanic to see what caused your car’s loss of power and determine what fixes need to be made.

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!

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: Carbon fouled #3 and computer shows misfire on #3

If the car is running fine then it will more than likely have an exhaust leak. If the engine is starting to run a little rough again then it may have a valve issue in that cylinder. I would usually...

Q: Key won't turn in the ignition

Hello. It sounds like you may have two different problems with your van. The key not coming out of the ignition may be caused by a failure in the ignition switch or the shift lock. Both of these are common...

Q: Speaking noise in steering wheel

If you are hearing this sort of noise when you are turning the steering wheel and it does not sound the same as the previous power steering noises that you were hearing, the most likely cause is a dried out...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...