Skip the auto shop - Our mechanics make house calls

Q: will start after jumpstart and then wont idle

asked by on

Changed head gasket and intake gasket made sure everything was tight put back together properly however when I go to start it up it will crank and crank but not fire so I jumped it off another vehicle and was able to get it to fire but then it would not idle and died.

My car has 201000 miles.
My car has an automatic transmission.

A: If your engine will not run after being jum...

If your engine will not run after being jump-started and the cables are disconnected, I would recommend ensuring that the connections to your alternator are good. If the alternator is not connected properly or is faulty, this could cause the engine not to run. Since it is likely that the alternator was removed in order to replace the head gasket, I would recommend the alternator being the first place you check.

If you are in doubt about this repair, I suggest enlisting the assistance of a qualified professional, such as one from YourMechanic, to perform an alternator replacement.

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・Save up to 30%

Get a quote

What others are asking

Q: Check engine light in code P0418

The air pump fuse is a 30 amp fuse that powers the pump. The "trigger" for the relay comes from the ignition switch, through a 10 amp fuse. Have you checked to see if the "trigger" wire to the relay...

Q: to replace a #4 cylinder exhaust valve lifter, do you have to do anything with the head gasket?

Hello. If you're replacing the lifter with the cylinder heads attached to the block, you shouldn't have to remove the cylinder heads or do anything to the cylinder head gasket. However, if the reason you're replacing the lifter is due...

Q: Car cranks slowly when it is hot, but cranks normal when the engine is cold

It sounds like your starter motor could be overheating. If the starter overheats, this can cause it to malfunction. I would recommend having your starter inspected and replaced as necessary by a certified mechanic. Once you have a new starter,...

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...
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...