Hummer Forums by Elcova

Hummer Forums by Elcova (http://www.elcovaforums.com/forums/index.php)

- Technical Discussion and Customizing your H2 (http://www.elcovaforums.com/forums/forumdisplay.php?f=5)

- - idle stumble (http://www.elcovaforums.com/forums/showthread.php?t=17282)

cmd	06-03-2006 06:59 PM

idle stumble

any ideas, I had my 2003 h2 to the dealer and asked that they clean the throttle body re the idle stumble, not sure if they cleaned it correctly, any one have any simular problem, updates are complete, changed fuel filter and flushed injectors on the same dealer visit.

PARAGON

06-03-2006 08:47 PM

Re: idle stumble

are you talking about an off-idle stumble? does it hesitate or nearly go dead?

NSANE

06-04-2006 03:52 AM

Re: idle stumble

My 2006 just started to hesitate a little off a idle. I do have a Magnaflow exhaust and a Volant air cleaner. But it was doing it before I installed them. Have you found anything on yours yet?

Big Z

06-04-2006 07:42 PM

Re: idle stumble

Mine started doing the same thing. I think it's about time for a good tune-up. Plugs, wires, fuel filter,........cats, anyway, time for the shop! :)

NSANE

06-04-2006 09:15 PM

Re: idle stumble

Mine only has 4,700 miles on it and 6 months old?

cmd	06-06-2006 03:06 AM

Re: idle stumble

the idle has a stumble to it, it does not go near stalling. It is however driving me nuts. I have not had time to further investigate, i have been told to look at the egr? where is this located on the motor, could not see it, another was the fuel pressure regulator, If i disconect the vac line to the regulator the truck seems to run better?

cmd	06-21-2006 01:08 AM

Re: idle stumble

no luck yet, changed please HELP! wires and plugs ok. is it possible that the MAP sensor could cause this? Dealer is clueless

HUMTECH

06-22-2006 05:31 AM

Re: idle stumble

This may sound dumb but check the oil filter to see if it has an anti drain back valve(it should have A rubber seal inside the filter visible if you remove the filter, below the seal) seen strange issues solved with A proper filter installed. Even if it's the factory filter, some didn't have them. Probably won't solve anything but i'm really reaching here. I'll put some more thought to it.

JamesT

06-22-2006 04:09 PM

Re: idle stumble

I had SAME issue. Nobody could figure it out. Turned out to be plugs. Buy NEW OEM plugs and wire and you'll be good.

cmd	06-24-2006 07:45 AM

Re: idle stumble

Thanks guys, as far as the oil filter, this drain back valve? what is its purpose.
The plugs? is there any way of checking these, i could easily change them out, i did however have them out to check them and they were clean and the gap was good.

Tahnks again guys

All times are GMT +1. The time now is 11:28 AM.