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Anybody know of any notorious problems with the 3.1 (3100) motor? And what years effected? I heard the 3.4 DOHC was known for leaking intake manifold gasket. Any Help Would Help!
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The 3x00 engines are known for having bad Lower intake manifold gaskets. And don't use bosch spark plugs and gatorback belts. That is all that i can think of. -
i have bosch 2 prong planinum plugs and a gatorback belt on it, no joke. what do u mean by they dont use these? like they dont act well with them or they dont fit? i got the belt from autozone for my car (94 Grand Prix 3.1L) it was the same size and width as the old one. the plugs and belt have been on there for about 6 months. and what exactaly it the 3x00 engines? is it the 3100,and the 3400? Any special years these problems were know for? Sorry for all the questions!Last edited by xbornkilla2k4; 09-28-2006, 10:30 AM.Comment
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most of the problems that I have seen with the 3x00 (meaning 3100 or 3400, take your pick in either application) have been the lower intake manifold gaskets on the 1996 and newer ones (the DEXCOOL cars).
I have not had any problems with the gatorback belts (I had one on the pink car before it got totalled).
With the bosch plugs, in my 1988 Cutlass, I burned the platinum right out of them, and on all of my other cars, they ended up causing a misfire problem. I now only use Delco Rapidfires.
The only other thing I can think of are leaking oil pump drive seals.Taylor
1988 Olds Cutlass Supreme 3100 MPFI
1990 Pontiac Grand Prix STE 3.1 MPFI
1994 Olds Cutlass Supreme convertible
1998 Lincoln Mark VIII
"find something simple and complicate it"
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hey thanks for the help!Comment
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