Rough idleing
#3
how many miles on your monte and what do you have a 3.5 flex fuel or 3.5/3.9 LT non flex? and what do you mean rough idle? has it just started doing this?
#4
It has 33000 and its the 3.9 LT3. I just changed the 2 lower motor mounts from the dealer as it needed gthem thought the roughness would go away..... its not a hard rough idle its just u can really feel the car running
#6
What's a loppy feeling??? But yeah mine 2 but it also runs alil rough like I said u can really feel it running then sumtimes u can't......weird.......and when I inch up at a light I feel the car shake what's that?
#7
loppy is a rough idle, not a very consistent idle, shake??? all I can say is my car does run a little rough, it may be with the variable valve timing of these cars, really not sure though.. read the below article, I hope it helps...
http://www.autoblog.com/2005/09/30/p...s-gms-3-9l-v6/
edit: great pic of the 3.9...
http://www.autoblog.com/2005/09/30/p...s-gms-3-9l-v6/
edit: great pic of the 3.9...
#9
from what everyone says, it is a great motor, with very little mods available though! I did put a CAI on mine and the mpg has gone up a little (2-3 mpg)! and I also added new magnaflow mufflers and tips, but left the rest of the exhaust stock.
#10
All we can do is hope the rough idle is normal lol I agree I love this car and the motor just wanna keep the car running for along time.......got any answers to the shake question? And u helped me before and like last gime I thank you for all your help