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Unread 08-10-2015, 08:28 AM   #1
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2005 WK 
Join Date: Jun 2014
Location: Baltimore, MD
Posts: 27
Fuel Pump - Warm Start Problems - 2005 GC

2005 GC 4.7 155k miles
- Cold Start (sitting overnight) is good
- Hot Start (quick stop at 7-11, start back up) is good
- Warm Start (sitting an hour or more) not good

Symptoms include longer cranking period, which is shortened by pressing down on the gas pedal. Also, there is a gas odor coming in through the vents when this occurs.

I've had this issue for quite a while, and they only thing not replaced by now has been the fuel pump. The fuel pressure was fine when checked.

I was doing some reading last night on here, and I came across some fellow members with the same issues, but they had '01 & '02 models with the 4.7. Apparently, there were issues with the O-ring seal, and/or Internal Check Valve (allowing fuel to drain back to tank).

Wanted to see if anyone else with '05-'10 with the 4.7 had this issue, and if the fuel pump replacement solved the problem.

Any help is greatly appreciated.

BmoreGC is offline   Reply With Quote Quick reply to this message

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