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transmission or another issue ?

joshv

joshv

New member
maybe once a week ill leave my house drive for short period and ill stop at a light, light goes green ill give the car gas and ill start moving forward, maybe 3-4 seconds later ill hear a thud and thats it.. im thinking either tranny or i riped a cv boot last year and pretty sure theres no more grease in it might be cv joint or possibly a motor mount, i can go drive for couple hours around town and never feel it for days, sometimes longer then a week.. and randomly it will happen....
 


Not enough info.

What I read for symptoms was sometimes you leave a light and feel a bang.

Please desribe it more etc.
Any feeling as though power isn't consistent to the wheels when it happens?
Any other even slightly odd behavior from it?
When it bangs, does the engine seem to go up or down oddly in rpm?
Is this a bone jarring bang or just a clunk?
Which side does it seem to come from?
Does it change if you have more or less people in the car?
 
It, happens when im easing from a stop slower, car kinda feels like its holding back for a few seconds, more of a thud, passender side up front is were i think the noise comes from
 


Your rear engine mouth and front are probably toast I disagree completely with shorter dog bones on ls4 cars cause they compress the front mount to much and stretch the rear IMO go back to stock do gone and really look at your lower mounts
 
I hope not bro, im gunna deffinitly check all my mounts, i did just notice today i have a poly on the top motor mount its got a big split it in gunna swap that out today and iv never checked the other mounts were abouts are they
 


joshv said:
I hope not bro, im gunna deffinitly check all my mounts, i did just notice today i have a poly on the top motor mount its got a big split it in gunna swap that out today and iv never checked the other mounts were abouts are they
Click to expand...

Passenger side oil pan and transmission diff cover. If you've never changed them you need them. There easy to do though only pain is taking out the CV axle to get to the rear one
 
91parkave said:
Passenger side oil pan and transmission diff cover. If you've never changed them you need them. There easy to do though only pain is taking out the CV axle to get to the rear one
Click to expand...

Most likely i have 140,000 miles and there all original lol
 
Car did it again 30 min ago, slightly on a hill and was barely giving it gas started moving maybe 3 seconds and somthing slammed, almost put y back in my seat.
 


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