Low fan not working

2004 MITSUBISHI GALANT
244,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
Avatar
ORTEGALEONARD144
  • MEMBER
  • 2 POSTS
The fan not turning on. I check relay. I check continuity. I replace fan. Still not working. When I switch it to A/C it turns on but the car RPMs go all heywire. And the car wants shut off. can this be a real problem to the engine?
Jan 25, 2021 at 12:21 AM
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.
Advertisement
Avatar
JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

Since we know the fan is good, let's check the fan relay system. Follow these directions. The attached pics correlate with the directions.

2004 Mitsubishi Galant L4-2.4L (4G69)
Radiator Fan Relay Check
Vehicle Engine, Cooling and Exhaust Cooling System Radiator Cooling Fan Radiator Cooling Fan Motor Relay Testing and Inspection Component Tests and General Diagnostics Radiator Fan Relay Check
RADIATOR FAN RELAY CHECK

pic 1

pic 2

pic 3

Let me know what you find.

Joe
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Jan 26, 2021 at 11:55 AM
Advertisement
Avatar
ORTEGALEONARD144
  • MEMBER
  • 2 POSTS
The relay has power and continuity, so I replace the relay and and then it started working for a couple days. one more quick question. is the fan supposed to be on when we have the heater on?
Feb 8, 2021 at 12:13 PM
Avatar
JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

The fan shouldn't be on when the heater is on. However, the A/C and fan will turn on with the defroster. The defroster uses the A/C to dehumidify the air. Is that what is happening?

Let me know.

Joe
Feb 8, 2021 at 4:20 PM