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K to start with I have a 00 Grand prix 3100 v6. It has this weird sound it does only when cold, sounds like a lifter tapping. goes away above 1300 rpm and when warmed up. It does sound like it's coming from the top of the motor. My previous grand prix also had this same sound, but louder. I'm told it's common among the 3100 series and just wondering what it is (one mechanic says lifters, another says piston slap though I dont think it's pistons), and how can it be fixed?
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2000 Grand Prix SE -
I've heard people claim both as well, regardless just about every 3100 does/did this even when practically new so don't worry about it, just pretend you have a diesel
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1996 3500GP Coupe, "Bright White".
3500 swap, 60degreeV6 1393 Cam, Ported Intakes, Comp Cams Valve Springs, 65mm TB, Custom Pushrods, S&S Headers, 97 PCM with DHP Powrtuner, 2.5" back to dual Hooker Aerochambers, SS Brake Lines, Addco swaybar, KYB's, Intrax Springs, STB's, etc! -
my 3400 does the same exact thing, and i have heared about 30 different things it could be, i just crank it up and go inside till its warm so i dont hear it lolsigpicComment
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-Brad-
89 Mustang : Future 60V6 Power
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Mine had the same sound and people told me it was lifters. It's gone now. I put in a new timing chain and rubber chain guide (old turned to brittle plastic where the rubber was). Noise is gone. Now the only tick I hear is the injectors!
OH and I can hear a little piston slap when cold, but you have to get on the ground and listen under the car, that sounds more like a knock than a tick though.sigpic
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1994 3100 BERETTA. 200,000+ miles
16.0 1/4 mile when stock. Now ???
Original L82 Longblock with LA1, LX9, LX5 parts
Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.
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