Skip the auto shop - Our mechanics make house calls

Q: Engine loses power when i put radiator cap on

asked by on

I put a new radiator in after my other radiator crack and made my car over heat. Now when I start the car which takes longer then usual the engine lose power and cutoff when I put the radiator cap on but if I pull it off fast enough the engine idles back up to its normal level any ideas

My car has 200000 miles.
My car has an automatic transmission.

A: When you overheated the engine before when ...

When you overheated the engine before when the radiator broke, you must have blown the head gasket. Have the radiator pressure tested to see if the engine cylinder gets coolant in to the cylinders. This will indicate a blown head gasket and possibly a cracked head. If you want to have this checked, a certified mechanic can come to your home or office to inspect the car's loss of power and verify what the issue is.

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・Save up to 30%

Get a quote

What others are asking

Q: grinding noise at idle on vvt like chain noise

Hello there, many different things can cause a grinding noise. The most common causes would be a belt tensioner, water pump, belt idler, or the alternator. If the noise started just after repairs than it is possible that it was...

Q: was running in idle. went to reverse and it died. i turned it back on and it seemed to shake.

Hello. If the vehicle is turning off and idling rough then there is a problem with the powertrain. It can be an issue with the throttle body or possibly an issue with one of the engine sensors. I usually check...

Q: How do you clean the seat belts?

Cleaning your seat belts is important for a number of reasons. The most important is that dirt and grime can build up and prevent them from working properly, particularly if it gets into the guide/retractor. Here’s how to keep them...

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 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.
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.