2005 Honda Civic

I took my 2005 Civic in for oil change and Honda adviser suggested i change timing belt and water pump due to it having 150k. I said fine.

After i got my car back i noticed the radiator reservoir was filled to top but the radiator was dry. I drove car a few blocks and noticed reservoir full again and radiator was dry. I pour more anti freeze in radiator and drove around then check next morning, same thing. I took car back in and they said i had after market cap so i bought new rad cap and i got them to check line for leaks and they said everything was fine. I get home same thing again. After the initial repair job when i start the engine it screech before starting. Wasn’t smooth like before, it started up immediately before the repair. Not sure now why it takes a while to start now and it screeches! Bad alternator?

Ive got two problems that Honda said they don’t know what happened. I suspect they either didn’t flush or got something stuck in the system or screwed something up. The adviser heard the noise when i tried to start car but he said it didn’t sound unusual, he lied. I can’t figure what causes the screeching sound.

They aren’t willing to trace back their work to figure out the problem. Usually when antifreeze is stuck in reservoir without going to radiator that would mean there’s a leak somewhere.

They told me to continue to drive it and that it won’t be a problem unless the car overheats. Well, after a week the car overheated. I have a blown head gasket. They said they didn’t cause the blown head gasket and refuse to fix it nor refund me for the shotty work they did. My car ran fine before and started showing these problems after I picked it up. I want to contest this.

Can anyone tell me if they could’ve damaged the alternator and caused the anti-freeze to be stuck in the reserve just by changing the timing belt and water pump?