Hummer Forums by Elcova  
Forums - Home
Source Decals

Source Motors
Custom. Accessories.

H2 Accessories
H3 Accessories
Other Vehicles

H2 Source

H2 Member Photos
H2 Owners Map
H2 Classifieds
H2 Photo Gallery
SUT Photo Gallery
H2 Details

H2 Club

Chapters
Application

H3 Source

H3 Member Photos
H3 Classifieds
H3 Photo Gallery
H3 Owners Map
H3 Details
H3T Concept

H1 Source

H1 Member Photos
H1 Classifieds
H1 Photo Gallery
H1 Details

General Info

Hummer Dealers
Contact
Advertise

Sponsored Ads










 


Source Motors - custom. accessories.


Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > General H2 Discussion

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 06-30-2012, 02:01 PM
jsbihn jsbihn is offline
Moderator
 
Join Date: Jan 2012
Posts: 728
jsbihn is on a distinguished road
Default Analyze this

Ok, I asked this question already, but I am going to to repeat it because of the lack of answers and the current info. (not trying to offend)

I have a 2003 Hummer with 107+k on it. It is stock.
Not long ago I started to see what looks like a whitish to tannish color smoke come from the rear when I exited off the interstate after traveling for 1.5 hours at 85 mph in the southern heat and humidity. There is a kind of chemical smell to it. I thought it was brake dust at first. Ok, well I have noticed that it will do the above mentioned 2-3 times each time I hit the brakes as I stopping hard. If I try to just slow down and do a gradual stop, it doesnt happen (or at least I cant see it). Around town it doesnt smoke, maybe once or twice if I am cruising for little bit and have to hit the brakes hard, but normal driving.... nothing. If i sit in my driveway and run the engine to about 2-3k for a few minutes and then release the pedal. Nothing. I dont even see anything leak. I have even tried revving to 2-3k and depressing the brakes hard in the drive way. Nothing.
I have put some no smoke additive in with no results.
Now i also cant be sure but I dont think this happened before the a/c was recharged (I know recharging is BS, but my mechanic said he had to to find the leak because the leak was so small - that was about 3 months ago and i still have a/c).
Also, the only thing i see dripping from my engine area at any time is ALOT of water. In fact after the long drive i pull into the driveway and look and there is alot of water dripping to the ground and when i look in the wheel well there is alot of water on the frame and what looks to be the engine (though the early morning and the lack of sleep is fogging my memory a little).

I can not seem to duplicate this unless i am going a decent rate of speed and then brake hard.
given it doesnt look like brake dust since at times i have seen it come up from the sides.

also currently my mechanic has told me that my cats are bad. he said this since when i brought it in i told him about the rattle can sound that comes from the under of the car that at times will come and go and disappear something after the truck has been running awhile. without hesitation he stated those are bad cats.
so there is another issue to think about

any ideas

Last edited by jsbihn : 06-30-2012 at 02:09 PM.
Reply With Quote
  #2  
Old 06-30-2012, 02:44 PM
HummerJim's Avatar
HummerJim HummerJim is offline
Hummer Authority
 
Join Date: Jun 2005
Location: Key Largo
Posts: 1,174
HummerJim is an unknown quantity at this point
Default Re: Analyze this

Are you sure the water isn't AC condensation run off? Hard braking might make the condenser drip on the exhaust pipes??? I'd definitely get a second or third opinion on the cats. This might be one of the few things I'd take it to the dealer to analyze and then think about having an Indy repair it, or fix it yourself. When the H2 first came out, there were lots of rattle issues with the exhaust tubing on 2003s and 04s.
Reply With Quote
  #3  
Old 06-30-2012, 03:15 PM
jsbihn jsbihn is offline
Moderator
 
Join Date: Jan 2012
Posts: 728
jsbihn is on a distinguished road
Default Re: Analyze this

Hummer Jim,
It is a good possibility that the water is AC condensation, but could that be causing the whitish/ tannish smoke?

Also, the mechanic that diagnosed my cats actually is a dealership mechanic for Cheyy/ GMC

Given, the rattle issues wouldnt they sound more like pipes banging?
This actually sounds like you put rocks in a soda can and then you are shaking the soda can
Reply With Quote
  #4  
Old 07-01-2012, 08:45 PM
Rico001's Avatar
Rico001 Rico001 is offline
Hummer Expert
 
Join Date: Dec 2007
Location: Panama City Fl
Posts: 571
Rico001 is on a distinguished road
Default Re: Analyze this

Quote:
Originally Posted by jsbihn
Hummer Jim,
It is a good possibility that the water is AC condensation, but could that be causing the whitish/ tannish smoke?

Also, the mechanic that diagnosed my cats actually is a dealership mechanic for Cheyy/ GMC

Given, the rattle issues wouldnt they sound more like pipes banging?
This actually sounds like you put rocks in a soda can and then you are shaking the soda can


The exhaust on the 2003 and 04 really can make several odd vibrations and pops and creaking noises but if you are hitting the cats while they are cold and the have a rattle they sound like they are going bad then.


Could the smoke from the brakes be brake dust?
Not sure but it sounds like ceramic pads and shoes are wearing out and dusting. Since you said this only happens at high speed braking and it is not from the tail pipe.

~Richard
__________________
Yellow 2003 H2 Luxury ALPHA , 2" lift, Black Helo Maxx8 20 X 10 Rims, Toyo AT Open Country II LT35/12.50/R20 tires, taillight guards and black LE brush guard, KC light bar w/4 Daylights, Recon Smoked roof lights, Sirius/XM Satellite Radio, Kenwood Head Unit , 4 - 6-1/2 inch Polk Audio Speakers, solid billet tailgate handle,HUMMER H2 Ghost lights ib front doors
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 10:20 AM.


Powered by vBulletin Version 3.0.7
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.