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-   -   Wierd clicking noise coming from engine bay? (http://www.jeepgarage.org/f5/wierd-clicking-noise-coming-from-engine-bay-9902.html)

TBJ IS MAD GUD 05-31-2010 02:58 PM

Wierd clicking noise coming from engine bay?
 
Recently my 2007 Grand Cherokee Limited 4.7 began making a clicking noise from around the front of the engine. I believe it is either the VANOS system of the MIVEC system. I can't tell which one though. Does anyone know which it would be? I'd like to order my Dr. VANOS kit soon (preferably tomorrow). Thanks in advance.

Scottina06 05-31-2010 03:01 PM

Re: Wierd clicking noise coming from engine bay?
 
sounds like the exhaust manifolds to me. The bolts break and it makes the manifolds flop and click. the fix is to install new bolts. Its most common on the drivers side manifolds

TBJ IS MAD GUD 05-31-2010 03:03 PM

Re: Wierd clicking noise coming from engine bay?
 
No, it's coming front the engine. Hence why I think it's the VANOS system.

JRsmoothee 05-31-2010 03:11 PM

Re: Wierd clicking noise coming from engine bay?
 
Quote:

Originally Posted by Scottina06 (Post 215284)
sounds like the exhaust manifolds to me. The bolts break and it makes the manifolds flop and click. the fix is to install new bolts. Its most common on the drivers side manifolds

hmmm my 09 does this.....its only got 3500 miles on it, i thought the clicking was just normal on dodge engines, maybe i should take it in

Scottina06 05-31-2010 03:15 PM

Re: Wierd clicking noise coming from engine bay?
 
sorry...I have never heard of vanos. I did a quick search and its some sort of variable valve timing fix on older BMW's.....???????

mjl2610 05-31-2010 03:21 PM

Re: Wierd clicking noise coming from engine bay?
 
I don't think our 4.7L has this fancy technology you speak of...VANOS is a BMW thing...

TBJ IS MAD GUD 05-31-2010 03:22 PM

Re: Wierd clicking noise coming from engine bay?
 
There was a partnership between BMW/Mitsubishi/Chrysler. I think the engines got VANOS in 2005. Works in tandem with MIVEC.

mjl2610 05-31-2010 03:32 PM

Re: Wierd clicking noise coming from engine bay?
 
Well I have the original 4.7L before the revision (2006) and there's nothing too special about a plain old chain driven overhead cam engine. Im willing to bet that the original powertech series has no variable valve timing or lift technology whatsoever. Heck it don't even have drive by wire until the revision.

Scottina06 05-31-2010 03:34 PM

Re: Wierd clicking noise coming from engine bay?
 
VVT is only on the 5.7 hemi and 2.4l engines...not the 4.7

Scottina06 05-31-2010 03:36 PM

Re: Wierd clicking noise coming from engine bay?
 
http://www.wkjeeps.com/wk_engines.htm

jeepster23 05-31-2010 03:41 PM

Re: Wierd clicking noise coming from engine bay?
 
VANOS was never used on a Jeep,,,,,, I think what you are expieriancing is broken exhaust manifold studs like Scott said.

TBJ IS MAD GUD 05-31-2010 03:42 PM

Re: Wierd clicking noise coming from engine bay?
 
Quote:

Originally Posted by scottina06 (Post 215300)
vvt is only on the 5.7 hemi and 2.4l engines...not the 4.7

well if you are so sure about what it aint how about tellin me what it am since I just checked the manifold bolts.


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