Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

I hope this was the culprit...

Thread Tools
 
Search this Thread
 
Old Aug 21, 2018 | 10:49 AM
  #1  
Backporch73's Avatar
Thread Starter
|
Member
Joined: Jul 2018
Posts: 85
From: Phoenix, AZ
Default I hope this was the culprit...

Remanufactured??
not terribly bad for 133k Miles looks like someone has already been in here? Hope the cleaning solved my intermittent stalling issue at low speeds.
 

Last edited by Backporch73; Aug 21, 2018 at 11:08 AM.
Old Aug 24, 2018 | 05:52 AM
  #2  
Backporch73's Avatar
Thread Starter
|
Member
Joined: Jul 2018
Posts: 85
From: Phoenix, AZ
Default

UPDATE!! Cleaning solved my stalling issue! Thanks Guys!!!
 
Old Aug 25, 2018 | 01:27 AM
  #3  
Gomer's Avatar
Senior Member
Joined: Jun 2012
Posts: 155
Default

Good deal. If it happens again there is one more sensor you can clean it’s the on on the top near the rear of engine has a plug going to it. Can’t remember what it is called but i can see it in your 3rd picture in the background. I cleaned mine with some of the left over MAF cleaner and been running great for about 8 or 9 months now.
 
Old Aug 25, 2018 | 01:31 PM
  #4  
Backporch73's Avatar
Thread Starter
|
Member
Joined: Jul 2018
Posts: 85
From: Phoenix, AZ
Default

Thanks! I'll check that out too
 
Old Aug 25, 2018 | 10:46 PM
  #5  
Backporch73's Avatar
Thread Starter
|
Member
Joined: Jul 2018
Posts: 85
From: Phoenix, AZ
Default stalling persists!!

Well the stall seemed to go away for a couple of days but now its back again. I guess Ill start with that other sensor. I also bought some Techron fuel system cleaner, but I have to wait until the tank is near empty. Someone recommended it on the forums in one of my many searches
 
Old Aug 26, 2018 | 02:31 PM
  #6  
hummer_on_fumes's Avatar
Senior Member
Joined: Jul 2013
Posts: 590
From: Virginia
Default

Originally Posted by Backporch73
Well the stall seemed to go away for a couple of days but now its back again. I guess Ill start with that other sensor. I also bought some Techron fuel system cleaner, but I have to wait until the tank is near empty. Someone recommended it on the forums in one of my many searches
There's a variety of things that can cause a rough idle but someone here once mentioned trying better gasoline such as shell or exxon instead of Costco or any other "cheap" gas. You may want to try that as well throughout your troubleshooting. The 2 things that made my H3 idle really hard were old spark plugs and then bad valves losing compression. The spark plugs are fairly easy to change but I had to get my valves remachined which cost a good amount
 
Old Aug 27, 2018 | 09:15 AM
  #7  
TAINTER's Avatar
Senior Member
Joined: Sep 2008
Posts: 6,126
From: SE Michigan
Default

Intake manifold bolts sometimes come loose also.
I5 has a "shake" to it.
 
Old Aug 27, 2018 | 07:41 PM
  #8  
BruceS's Avatar
Senior Member
Joined: Jan 2016
Posts: 150
Default

What air filter are you using?
 
Old Aug 30, 2018 | 05:08 AM
  #9  
Backporch73's Avatar
Thread Starter
|
Member
Joined: Jul 2018
Posts: 85
From: Phoenix, AZ
Default

Originally Posted by BruceS
What air filter are you using?

it it just looks like a new generic style air filter, nothing special but it’s clean.
 
Old Aug 30, 2018 | 07:36 AM
  #10  
Backporch73's Avatar
Thread Starter
|
Member
Joined: Jul 2018
Posts: 85
From: Phoenix, AZ
Default Video of almost stalling

Seems worst with the AC on

 

Last edited by Backporch73; Aug 30, 2018 at 07:39 AM.



All times are GMT -5. The time now is 02:39 AM.