What would cause a 1 year old radiator and cap to have corrosion

Tiny
MICHAELVAN
  • MEMBER
  • 1999 CHEVROLET BLAZER
And can this have anything to do with not having any heat? The radiator busted about 1 year ago and was replaced with a new one and a new cap and now the inside of the radiator and bottom of the cap are rusty and corroded looking. There is also no heat even after the heater is on for 45 mins.
Wednesday, October 26th, 2011 AT 1:05 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
If the heater core is clogged with the corrosion, yes.

The coolant can cause this, yes. Electrolysis, and the fact that the system was not flushed when the rad was replaced.

Roy
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Wednesday, October 26th, 2011 AT 1:51 AM

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