mbspeed Posted February 22, 2005 Report Share Posted February 22, 2005 hay guys does anybody have a vibration/noise in the front end when you go over 85mph on the highway only when your on the gas from 85 to 120 the noise stays the same if you cost @ speed over 85 noise is not present (note to any law man i only drive this speed on the autobahn) any input would be helpful Link to comment Share on other sites More sharing options...
cwest94 Posted February 22, 2005 Report Share Posted February 22, 2005 How are you able to drive that fast? I ask because my SS and my Blazer shut down when you get to 90mph, there is a govern on them I guess. Link to comment Share on other sites More sharing options...
mbspeed Posted February 22, 2005 Author Report Share Posted February 22, 2005 my ss cut off @ 100mph before the pcm4less tune now the truck goes over 120mph but we only have a 120 speedO so i have no clue of the top speed now Link to comment Share on other sites More sharing options...
Maximus Posted February 22, 2005 Report Share Posted February 22, 2005 Keep it under 55 young man!! Link to comment Share on other sites More sharing options...
mbspeed Posted February 23, 2005 Author Report Share Posted February 23, 2005 I cant drive 55 Link to comment Share on other sites More sharing options...
desrtrat Posted February 23, 2005 Report Share Posted February 23, 2005 there are some old posts on high speed vibration about a year ago i think what some found was bad balancing of the tires. i have mine rebalanced every 6000 mi. and 90-100 mph nice and smooth even on cali. shitty interstates yea i can`t drive 55.. if you do out here you get run off the road.. Link to comment Share on other sites More sharing options...
mbspeed Posted February 23, 2005 Author Report Share Posted February 23, 2005 i dont think its the tires it sounds like it comes from the front axle its like a huming noise i dont know if its normal for AWD it has always made this noise/ vibration/huming Link to comment Share on other sites More sharing options...
detjoe Posted February 23, 2005 Report Share Posted February 23, 2005 COT- it runs the truck rich when you are on her. I.e. 80-90 or so the cat does not over heat? A PCM tune I heard can get rid of it? BUt I am waiting for my tune to see I have same noise at high speeds...when @ dealer I am going to have them check it out, or at least note it for future reference. Link to comment Share on other sites More sharing options...
mbspeed Posted February 26, 2005 Author Report Share Posted February 26, 2005 i have a retune its the same maybe all sss have this noise awd system Link to comment Share on other sites More sharing options...
Posi12Bolt Posted February 26, 2005 Report Share Posted February 26, 2005 mine vibrates over 70mph....but I think its the 23's doing it!! Link to comment Share on other sites More sharing options...
mbspeed Posted February 26, 2005 Author Report Share Posted February 26, 2005 mine vibrates over 70mph....but I think its the 23's doing it!! <{POST_SNAPBACK}> if you take your foot of the gas over 70mph does it go away?????????? Link to comment Share on other sites More sharing options...
detjoe Posted February 26, 2005 Report Share Posted February 26, 2005 i have a retune its the same maybe all sss have this noise awd system <{POST_SNAPBACK}> ask your tuner if he/she adjusted it at all? I dont think it is a normal sound b/c it disappears closer to 100. I dont think that tuners get power gains out of adjusting the COT function so they leave it alone, but it might help smooth out the ride if this function was lowered, or removed when you remove your cats Like I hope to do some day Maybe ask and see if they (read: I ) know what I am talking about I am glad this is being talked about b/c I did not wat to mod a truck with weired noises...and even better with tune experence you have... Link to comment Share on other sites More sharing options...
vandy350 Posted February 26, 2005 Report Share Posted February 26, 2005 my ss shuts down at 110mph and its stock Link to comment Share on other sites More sharing options...
Posi12Bolt Posted February 27, 2005 Report Share Posted February 27, 2005 mine vibrates over 70mph....but I think its the 23's doing it!! <{POST_SNAPBACK}> if you take your foot of the gas over 70mph does it go away?????????? <{POST_SNAPBACK}> no, thats why i think its the wheels.... I just had them REbalanced....better but still there!! Link to comment Share on other sites More sharing options...
Woffski Posted February 27, 2005 Report Share Posted February 27, 2005 Never had that problem. Link to comment Share on other sites More sharing options...
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