A/C Compressor & Engine Cooling Fan Failure - Chicken or the Egg
I have a bit of a "chicken or the egg" scenario going on with my wife's 07 V6.
BACKGROUND Sunday: We were driving together when the A/C stopped blowing cold consistently. A/C would alternate between hot and cold air. Engine would occasionally shutter while idling. Monday: Wife drove it to work. A/C still alternating between hot and cold. Engine would occasionally shutter while idling. Tuesday: I drove it to work. A/C was cold and no engine shutter. (It magically fixed itself... right? :icon_shrug:) Wednesday: She drives it again. No problem OTW to work, but OTW home... Temperature gauge creeps up while idling; returns to normal while moving. A/C just blowing hot. I pop the hood to confirm that the engine cooling fan isn't coming on at all. I also noticed the A/C clutch comes on but doesn't stay engaged. I've checked the relays (24, 25, 28). All good. I plan on checking the other fuses associated with the fan/ac/pcm and the fan resistor when I get home. QUESTIONS 1. Which is more likely to be the culprit? The A/C Compressor or the Engine Cooling Fan. 2. Was the cooling fan steadily failing the whole time, and just gave up the ghost yesterday? 3. Is the A/C clutch not staying engaged to prevent the compressor from overheating via the PCM? 4. Would a short in the A/C compressor mess with the PCM causing the engine cooling fan to not engage? |
A new engine cooling fan and a few fuses later... all is well.
Wife's ride is back on the road. |
All times are GMT -5. The time now is 01:26 AM. |
© 2024 MH Sub I, LLC dba Internet Brands