lexuslove8

I recently had a mechanic replace my alternator. I picked up my car from the shop yesterday. After driving the car for about 20mins. The car check VSC code, check engine light came on & then the car started overheating. When I parked the car all the antifreeze fluid was running down the parking lot.
What could be the issue?
the mechanic seems to think air is trapped in the coolant system.. Help please

jagtoes

If it didn't overheat before you took it to the mechanic and it does after you got it back , think. Take it back and have the mechanic fix it on his dime.

ESh

chuyrobles

Air trapped in the cooling system is not going to cause coolant to run down the parking log. The mechanic messed something up.

I've replaced our alternator twice and the engine never overheated when I got it all back together. Anytime you drain coolant from the radiator you leave some trapped air in the coolant system, but, in my experience, never so much as to cause overheating. It may take a couple of weeks and several cycles of running the car and adding coolant or distilled water to the reservoir tank, but it should not overheat like that, and certainly not leak coolant.

I don't know that I would trust this mechanic to diagnose the issue if he is not acknowledging he could have screwed something up.

jkayca

Lose hose clamp could do this. My guess is the mechanic did remove the rad but didn't connect it back up properly.

Lexmus

Can you tell where the coolant was leaking from? If not, when the engine is cool, refill the radiator with some DI water, replace the radiator cap, and crank the engine and look for the leak.

P.S. That mechanic sounds clueless.

Lexmus

It is also possible that the water pump seal failed. Mine did a couple of years ago on my drive to work. I stopped the car before any engine damage occurred.