1994 Chevy Blazer Coolant Leak Inside

GMC
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BRIANFLYNN1
  • MEMBER
  • 1 POST
[b:8e5feb1fe3]i just my car back from the mechanic when he fixed my fuel regulator.... now i am getting coolant inside my 1994 chevy blazer above the passanger's feet. what could be causing this? [/b:8e5feb1fe3]
Apr 29, 2006 at 8:06 AM
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BURRBRIAN
  • ✓Experienced Mechanic
  • 158 POSTS
Hi Brian, this is Brian! Well, from what little you described you have the classic symptoms of a leaky heater core. Do you smell coolant when you run heater or defroster and-or have the windshield fog up?Not sure what they run for your year but they usually aren't too awful bad to change out.You will have some plastic housings under dash on that side to remove to get to it and chase down your hoses from motor to firewall to disconnect from core, can be a pain sometimes but with a little patience you can save high dollar shop labor charges. eithier way not a major undertaking. Good luck and happy wrenching :D
Apr 29, 2006 at 11:17 AM
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Suggested Repair

Inspect and replace the heater core. Confirm the leak by checking for a coolant smell and windshield fogging when the heater or defroster is on, then remove the under-dash plastic housings and disconnect the heater hoses at the firewall to access the core.

Conversation Summary

The owner of a 1994 Chevy Blazer reports coolant leaking inside above the passenger's feet after a fuel regulator repair. The expert identifies classic heater-core leak symptoms and suggests checking for coolant odor and fogged glass when using heat or defrost, then replacing the heater core by removing under-dash housings and disconnecting the hoses at the firewall.

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