2002 Mercury Sable engine fails when heat is turned on

2002 MERCURY SABLE
117,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
RVDD1
  • MEMBER
  • 2 POSTS
Every time the heat is turned on the engine fails. There is a burning rubber smell and rubbing/dull squeaking noise coming from the engine.
Jan 25, 2010 at 9:05 PM
Advertisement
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
You sure the alternator is producing the correct output voltages during a heavy load
Jan 26, 2010 at 12:52 AM
Avatar
RVDD1
  • MEMBER
  • 2 POSTS
absolutely sure that the alternator is not the problem. Charge on the battery is fine .... only have problems when turning on the heat/defrost etc.
Jan 26, 2010 at 11:10 AM
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Get a voltmeter and read the battery voltage while engine is idling w/o the heat On-Record it now load the the system turn the heat On -Record it-tell me the two readings.
Jan 26, 2010 at 4:59 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.