Lots of noise on start up?

[fourfourto]

There was a thread some time ago about the tentioner pully making noise at start up ? I never had that problem .
I have been living with the brake noise(normal says hummer rep ) since 2005 GRRrrr.( a little brake lube at rotation is a temporary fix.)

My wife drives kinda hard 15 1/2 around town 14 1/2 in the winter using auto start. 75MPH on Hwy im getting about 18 on a trip a little more or less depending on speed.
Pulling a 4,000 camper about 12 1/2 to 13 MPG at 60/65 depending on hills.if I run 65 to 70 I wont get more then 12.

[Dani]

I too have this noise however I've noticed that it's usually only when it's cold outside. If I let it warm up before driving it usually goes right away.

[HummerJim]

I had the same noise, especially on cold start ups and solved it by spraying WD40 in the shaft of the engine belt tensioner pulley. The noise would come back after about 10 days and I would spray it again. Hummer replaced the tenison pulley under warranty and it never made any noises again. There's a thread about this the first winter the H3 came out, I think by F5stop, and it boiled down to a handful of H3s had noises from the tensioner pulley.

[ctupton]

I took it in, and it of course didn't repeat said noise.. took it on a road trip this weekend, and while in Lubbock, darn thing made noise the whole time we were driving around the town... and stayed on for first 35 miles after leaving town to head back home.

[blindzebra]

if I'm not mistaken it's a extra clutch that kicks into your cooling fan on start up and when your engine is running hot. Yes?

[ctupton]

That is what I think it is... but never an issue once it engages.. it is quiet as can be. just sometimes it takes 30-50 miles to engage, other times about a mile.