Guys:
I have a 2002 Isuzu Rodeo Sport 3.2L V6 4x4 with 75,000 on it now. I have had the Intake Manifold Gaskets replaced 4 times. At 35K, 47K, 61K, and last week at 75K. The first two replacements were under the bumper to bumper warranty and the last two were under the 10yr/120mile drive train warranty. Do not let someone tell you this is not Warranty Work!!
The gasket is fairly cheap ABS plastic. I live in Minnesota, so as this gasket heats up and cools down so often, it eventually becomes brittle and breaks causing the blowout. The mechanic said this is one of the most problematic issues with this make and model. He went on to say that I would be back again in another 12-15K with the same issue again.
Symptoms are always the same. Car has problems idleing, then will begin to stall at stop lights. The check engine light comes on and eventually when this gasket blows the check engine light begins to Flash On and Off. Once the check engine light begins to flash on and off, you only have so many miles left (mechanic told me 20-30 miles) before you cause major engine damage.
Hope this helps people with the same issues that I've had!!