Thread: Hard Start only when warm H2 2003
View Single Post
  #2  
Old 12-17-2009, 02:35 AM
mikejr's Avatar
mikejr mikejr is offline
Hummer Authority
  
Join Date: May 2006
Location: South Western PA
Posts: 1,433
mikejr is an unknown quantity at this point
Default Re: Hard Start only when warm H2 2003
Quote:
Originally Posted by Ulrich1
Anyone,

My 2003 H2 is hard starting when warm. Only warm everyday. Dealer hooked up computer and said it was a pluged converter, and the scanner showed low battery voltage. Fixed converters and replaced battery yesterday. Today replaced the fuel pump and sender before I return to the dealer. Drove 30 minutes, went to restart-same problem, hard start. The hard start continues to get worse.

I do hear a little air hiss, that started right before the hard start issue. That's what made me think that it possibly was the converter. "Sounds like the air cleaner is off when I hit the throttle". Does a leaky intake gasket cause hard start warm but not cold?

Any suggestions?

Reach out to Hummtech on this forum. He knows his stuff.
__________________
2009 H2 Silver Ice LE

2008 H2 Lux Series, Slate Blue, everything but the air suspension - sold

2006 H2 Lux Series, Uplevel Chrome, DVD's, Slate Blue, Sun Roof - sold

"If Life Gives You Limes, Make Margaritas" - Jimmy Buffett
Reply With Quote