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Blaze69 · 11-13-2008, 07:00 AM

I've got a 2002 tahoe with the 5.3 flex in it. Recently I started to get some very weird things happening to it. It may be cause it's starting to get colder in the mornings or maybe just chance. It hesitates and seems like it wants to die. After it warms up or when it is actually in gear and running it is fine.
I tried spraying some cleaner around the intake to see if the idle would change (nope). I have read somewhere that GM made a mistake and put in the wrong colored gasket (orange instead of green I think) for the flex fuel engines.
Is there some other test to try to narrow it down? Or does anyone have any ideas as to what else it could possibly be? One other school of thought says it could be the temp switch is not reading correctly.
Thanks

11-13-2008, 07:00 AM	#1
Blaze69 Registered User Join Date: Apr 2001 Location: Arizona Posts: 147	Possible intake gasket leak I've got a 2002 tahoe with the 5.3 flex in it. Recently I started to get some very weird things happening to it. It may be cause it's starting to get colder in the mornings or maybe just chance. It hesitates and seems like it wants to die. After it warms up or when it is actually in gear and running it is fine. I tried spraying some cleaner around the intake to see if the idle would change (nope). I have read somewhere that GM made a mistake and put in the wrong colored gasket (orange instead of green I think) for the flex fuel engines. Is there some other test to try to narrow it down? Or does anyone have any ideas as to what else it could possibly be? One other school of thought says it could be the temp switch is not reading correctly. Thanks __________________ 1969 Blazer: 350/350, 4X4, HEI, Edlebrock carb/intake, dual flowmasters, np205, 3:07's and the rest is mostly stock. The front end disc swap is finally complete 2002 Z71 Tahoe. CAI, Flowmaster 40, Silverstars in high, low and fogs and a bunch of mods (upgrades) inside and out.