PwtrSS_OakCliff
Full Access Member
If I park my truck with the AC on for even about 5-10 mins, once I take off the motor sound incredibly LOUD.. Sounds like an airplane or something.. Does anyone else experience this?
Motor sounds LOUD when I leave it parked on with AC for 10 mins
- Thread starter PwtrSS_OakCliff
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
CEN2MENTAL95
Banned
sounds like the tranny cooler engaged to cool down the tranny....it quiets down as you start moving
abideejay
TYF Newbie
- Joined
- Jan 25, 2012
- Posts
- 26
- Reaction score
- 0
Looking at your sig, assuming it's the 2003 Yukon, it could be the mechanical cooling fan. Engine compartment is heating up while sitting with the A/C on. When you take off, that fan is running at full speed until the engine compartment cools down a bit. Sounds like an airplane taking off. My 2005 does the same thing. At least until this Friday when I hope to install the e-fans! 
Nickleahy23
Full Access Member
huh? the trans cooler is just like a radiator for your engine..its always cooling the trans fluid and there is no engaging or disengaging?
it was just your mech fan..fan clutch engages when it gets warmer in the engine compartment
CEN2MENTAL95
Banned
Odd...my 4runner did this all the time?
dropmech
Puddle Pirate
It's your fan. The Duramax boys always compare their fans to a jet.
Nickleahy23
Full Access Member
hmm weird..could be a chance that trans cooler had its own seperate fan?
OP
OP
PwtrSS_OakCliff
Full Access Member
Looking at your sig, assuming it's the 2003 Yukon, it could be the mechanical cooling fan. Engine compartment is heating up while sitting with the A/C on. When you take off, that fan is running at full speed until the engine compartment cools down a bit. Sounds like an airplane taking off. My 2005 does the same thing. At least until this Friday when I hope to install the e-fans!
So fix will be to change the fans? The stock fans always run when the engine turns on right? or do they come on with the temp. gets to a certain point?
CEN2MENTAL95
Banned
fans should only kick on when needed (i.e. engine gets past certain point temp wise)
Nickleahy23
Full Access Member
you still have a manual fan..switch to 05+ E fans and your set
