Weird Vibration
Weird Vibration Hi, i get this weird vibration in 3rd gear at about 40-50mph or 1900rpms to about 2300 i would say, then also at about 88mph and so on to over a 100mph, i was reading stuff on the flexplate but i would think it would do it all the time then. Well if anyone knows what this could be let me know. Thanks everyone!
TECH Enthusiast
Joined: Aug 2004
Posts: 580
Likes: 0
From: Manhattan, NY
Originally Posted by gibsonlp1310
Hi, i get this weird vibration in 3rd gear at about 40-50mph or 1900rpms to about 2300 i would say, then also at about 88mph and so on to over a 100mph, i was reading stuff on the flexplate but i would think it would do it all the time then. Well if anyone knows what this could be let me know. Thanks everyone!
I had this same issue about 4 months ago
Could not locate the cause for WEEKS! everything was fine (including the flexplate).
Yeah.
Change your sparkplugs. One (or more of them) is fucked, and causes this.
I know, it sounds nuts
Trust me on this one. Change your sparkplugs, and the vibration will go away.
Change your sparkplugs. One (or more of them) is fucked, and causes this.
Trust me on this one. Change your sparkplugs, and the vibration will go away.
I have had a vibration that appeared mysteriously that has no relation to mods since the vibration was not there intitially after all my mods. Everything was fine for quite a while then I get this annoying vibration - I hadn't changed anything. As with everyone else, the vibration occurs in the higher RPM range (basically at 75MPH & above with 3.73 gears).
I too have checked/had checked professionally the rear (incl. all bearings), pinion angle, driveshaft-u-joints, installed new stock tranny mount, re-balanced all wheels. I was just about to tear into the tranny to check the flexplate and the verter.
I don't understand how the spark plugs could solve this problem as it would more than likely come from a misfiring plug(s) which should throw a code? I have the NGK TR55IX Iridium plugs that have only been installed for about 7K miles - would one expect these plugs to go bad that quickly?
-Jay-
TECH Enthusiast
Joined: Aug 2004
Posts: 580
Likes: 0
From: Manhattan, NY
Originally Posted by 1QUIKWS6
When you say the plugs were f&%$# - just exactly what do you mean?
I have had a vibration that appeared mysteriously that has no relation to mods since the vibration was not there intitially after all my mods. Everything was fine for quite a while then I get this annoying vibration - I hadn't changed anything. As with everyone else, the vibration occurs in the higher RPM range (basically at 75MPH & above with 3.73 gears).
I too have checked/had checked professionally the rear (incl. all bearings), pinion angle, driveshaft-u-joints, installed new stock tranny mount, re-balanced all wheels. I was just about to tear into the tranny to check the flexplate and the verter.
I don't understand how the spark plugs could solve this problem as it would more than likely come from a misfiring plug(s) which should throw a code? I have the NGK TR55IX Iridium plugs that have only been installed for about 7K miles - would one expect these plugs to go bad that quickly?
-Jay-
I have had a vibration that appeared mysteriously that has no relation to mods since the vibration was not there intitially after all my mods. Everything was fine for quite a while then I get this annoying vibration - I hadn't changed anything. As with everyone else, the vibration occurs in the higher RPM range (basically at 75MPH & above with 3.73 gears).
I too have checked/had checked professionally the rear (incl. all bearings), pinion angle, driveshaft-u-joints, installed new stock tranny mount, re-balanced all wheels. I was just about to tear into the tranny to check the flexplate and the verter.
I don't understand how the spark plugs could solve this problem as it would more than likely come from a misfiring plug(s) which should throw a code? I have the NGK TR55IX Iridium plugs that have only been installed for about 7K miles - would one expect these plugs to go bad that quickly?
-Jay-
one of my plugs didn't give a strong enough spark, and that caused a slight imperfection. Sort of a misfire, but not enough for the code to light up.
The one that I refer to as being 'fucked' was soaked in gasoline.
