Q: Check engine light flashing motor shake could tensioner making water pump or anything else belt driven be it

asked by on

Runs good tell turn on AC to highest setting then check engine light flashes and motor shake noticed the tensioner was loser then I thank it should be other then that everything looks ok does over heat when setting but one fan is out I know that
My car has an automatic transmission.

The flashing Check Engine Light means the engine is misfiring, which can be very harmful to your catalytic converter. If it starts doing this when the A/C is turned on, then there could be a problem with the ignition system being unable to handle the increased load placed on the engine at idle. This could be as simple as worn spark plugs or a weak ignition coil, but it could be more serious like low fuel pressure or low compression in one cylinder.

The overheating is also a problem, but most likely a separate one entirely. I would strongly recommend having the ignition system checked by a qualified professional, as well as having the overheating issue diagnosed as well. Consider YourMechanic if you decide to get this fixed, as a certified technician can come to you and perform these checks on your vehicle.

Was this answer helpful?
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. Check engine light flashing motor shake could tensioner making water pump or anything else belt driven be it

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: Q: car won't start

Hello. If the battery is testing good and has the correct CCA and voltage, I would look towards a faulty starter or wiring fault such as insufficient ground. I recommend that a technician check the starting system . If the...

Q: Misfiring and p0300 code

It may be possible the misfire is from coolant leaking onto the plug wires. You will need to fix the coolant leaks first and at the same time make sure the camshaft and crankshaft position sensors did not get coolant...

Q: Performance chip messed up my car

Since I don't know what kind of chip you have or the specifics of how it was installed, I'm not sure how much advice I can provide. But first, I would start by double checking that everything is exactly how...

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 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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.