Skip the auto shop - Our mechanics make house calls

Q: Engine takes too long to warm up runs poor until it warms up.

asked by on

My engine runs poor misses hesitates until it warms up can the clutch on my fan cause this issue keeping the engine to cold

My car has 1730000 miles.
My car has an automatic transmission.

A: There is only two possible causes of an eng...

There is only two possible causes of an engine running colder than it is supposed to. The fan clutch may be locked up and would cause a load on the engine and excessive airflow across the radiator not allowing the engine to get to operating temperature fast enough. It may take a real long time to even get close to the normal operation temperature. The thermostat controls coolant flow through the engine and is suppose to stay closed until the engine starts warming up and then allows the coolant to flow through the motor at a controlled rate maintaining the correct engine temperature. If the thermostat is stuck in the open position or has been removed for some reason then the engine will not warm up very fast or may not have a constant temperature control of the engine. I recommend having the cooling system tested to see if the cooling fan clutch needs replaced or the thermostat is bad. You may have both problems and this would compound the problem causing the engine to run cold all the time and no heater performance. Have a mechanic like one from YourMechanic come to you and do a coolant performance test and determine the cause of running too cold and rough.

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: Fuel door release open

Hey there. This is an electrical release mechanism, consisting of the switch in the glove compartment, and a solenoid that is inside the fuel door itself. Starting with the fuse for this circuit, follow the "power trail" to see which...

Q: My car overheated with smoke coming out, I found antifreeze all over the engine and the temperature gauge was high

This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know, the coolant fan switch helps to maintain the proper coolant temperature by turning...

Q: Brake system, coolant leak, brake fluid leak ,wheel hub

All of these repairs are feasible. Brake systems can leak at a variety of points but the repairs are pretty straightforward. What I would suggest is you visit the YourMechanic Internet portal and request brake leak diagnostic and repair service....

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...
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...