My son has the opportunity to buy a 2002 Grand Prix with the 3.1 Litre
engine at a good price. I started it from cold and there's no piston
slap noise. My question to Ian, Harry and others who know the
answer.........Has the intake manifold gasket been updated for 2002?
The dealer tells me that the 3.1 litre in the Malibu gives more
problems with the intake manifold gasket than the 3.1 litre in the
Grand Prix. I thought it's an identical engine made in the same
By dealer....do you mean the service advisor, or the girls at
the front counter? It must have been some one that wasn't
particularly knowledgeable as the engines in those two cars
are identical. Probably what they meant to say was that
they see more intake leaks in Malibu's because there were
more of them sold and running around then the Grand
Prix with a 3.1 engine. The Malibu only comes with the
3.1, but the Grand Prix is usually sold with the 3.8. It
does come with the 3.1, but I'd bet that a small minority
of Grand Prix's actually were sold with the 3.1.
Thanks Ian. By dealer I meant Salesperson. I too think it's a
perception thing. There are so many 3.1 litre engines in Malibus (and
Centurys) compared to the few found in newer Grand Prix models.
Should the 3.4L have been the choice engine for the base model GP's instead
of the 3.1? Pontiac has some wierd engine choices, like the Grand Am in 02
had a choice between the 2.2L motor and the 3.4 For the GT.
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