Roaring Sound

Fulltimer · **Posted:** Sun Aug 26, 2007 10:35 am

WTF is that! It's a sound like a fan but it doesn't do it all the time and it is something new. It can even be heard with the windows up. It might be my imagination but there may be a loss of power when this happens. HELP!

Terry

hyedipin · **Joined:** Thu May 11, 2006 10:20 am **Posts:** 1667

OMG, you got a lion in the cargo area, jump out!

I've also had a moaning/roaring sound on highway 60mphs, is yours while driving or idling?

Fulltimer · **Posted:** Sun Aug 26, 2007 11:49 am

When you first take off, then it stops at about 20 to 30mph. Lions and Tigers and Bears...oh my! :shock:

Terry

Jeepjeepster · **Posted:** Sun Aug 26, 2007 11:51 am

Do you have the towing pack? If so, you have the engine driven fan which will engage when its hot out. Normal..

Take it off and give it to me if you dont like it.

Neatus · **Posted:** Sun Aug 26, 2007 12:42 pm

Is it when your A/C is running? Try checking your A/C compressor while the Jeep is running may be the A/C clutch/pully going bad.

corwyyn · **Posted:** Sun Aug 26, 2007 2:50 pm

Check your vacuum hoses, especially this one running from the throttle-body area to the brake booster:

I did some work on mine a while back and had a similar problem - loud hissing/roaring sound that I noticed mostly at start-up and when I shut the engine off. Didn't notice any loss of power but it was annoying enough to make me track it down. Turned out I had knocked that one off at the engine end. Put it back on and I was good to go...

Fulltimer · **Posted:** Sun Aug 26, 2007 3:59 pm

Thanks for the tip but, no. It's on tight. I tried the AC on and off & couldn't make it do it. Sometimes it does it in the mornings. In fact it does MOST of the mornings. I'm going to run it into the stealership in the morning and see what they think.

Terry

adamkrz · **Posted:** Sun Aug 26, 2007 5:20 pm

I had a similar issue with my son's chevy s-10 with the 4.3 v6 - It was the intake manifold leaking..

Jeepman56 · **Posted:** Mon Aug 27, 2007 11:41 am

Is it when you step on the skinny pedal? It could be the V6. I love that roar.

Jeepjeepster · **Posted:** Mon Aug 27, 2007 11:52 am

Did you not read my post? It says you have the towing pack in your sig, all mechanical fans will roar after the jeep has sat over night and cooled off. It will also happen if you shut the Jeep off when the engine is hot then start it back up, thats called heat soak.

its normal.

sleeve84028 · **Posted:** Mon Aug 27, 2007 12:43 pm

The mechanical fan clutch could be going out and locking up randomly... This would cause the fan to "roar" at higher RPM's and really effect performance of the vehicle while you are driving down the road. My vote if for Fan Clutch

As Jeepster mentioned though, if it happens when you're starting the Jeep it is a normal noise. (I hear it every day)

Fulltimer · **Posted:** Mon Aug 27, 2007 2:50 pm

It seems that someone thinks I'm new at driving this thing. It is a 2005 that I got when it was new. I know what the normal sounds are. This is not normal. When people 50 feet away turn and look that says something also.

This morning I took it to the dealer. They said the AC compressor was a little noisy but ok. They couldn't duplicate the noise. I guess when it comes back and doesn't go away I'll take it to the dealer again. Thanks for the input guys, I appreciate it.

Terry

sleeve84028 · **Posted:** Mon Aug 27, 2007 2:57 pm

Fan Clutch

Jeepjeepster · **Posted:** Mon Aug 27, 2007 5:04 pm

You say it does it when you first drive the jeep, all engine driven fans will be engaged when they are cold. They will also be engaged after it sits and the engine is hot.

When the jeep is cold, open the hood and give it some gas by hand. Rev it up really good and see what is roaring.

hyedipin · **Joined:** Thu May 11, 2006 10:20 am **Posts:** 1667

Jeepjeepster wrote:

You say it does it when you first drive the jeep, all engine driven fans will be engaged when they are cold. They will also be engaged after it sits and the engine is hot.

When the jeep is cold, open the hood and give it some gas by hand. Rev it up really good and see what is roaring.

have shotgun ready to hunt the lion down before it jumps out and gnaws on your face for disturbing him. `:lol:`

SoDakJeep · **Posted:** Mon Aug 27, 2007 5:28 pm

check your tensioner on the belt.....my car used to roar loudly didnt think to much of it. Drove from Aberdeen SD to Denver Co. then down to Colorado Springs....belt came off on side of interstate tensioner shot car in shop over night. Not fun when your 800 miles form home on a limited budget.....now that i had the tensioner replaced its quite as it once was.

Fulltimer · **Posted:** Wed Sep 05, 2007 11:39 am

I just got a call from the wife.......the AC stopped working! This is NOT good! Well, I'll see what the dealership has to say.

Terry

hyedipin · **Joined:** Thu May 11, 2006 10:20 am **Posts:** 1667

A new people has been complaining about A/C stopping. darn, I hope it is not a wave of another issue with KJ 04-05..

Roaring Sound

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