× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: 97 Lexus, repeat heater core failure
Posted to Technical Theory Forum on 4/14/2003 4 Replies

Roy

the first thing to check for is stray electrical current in the coolant itself. If you read even 0.1 volt in the coolant with a voltmeter, I promise you'll continue to have repeat failures until the reading is "0" volts. Try this...while the car is runni... Login to read more.

4 Replies Received (View Replies)