Glaze
Active Member
Hey all
I’ve dug deep within all the forums related to this issue couldn’t find any specific answers so thought to start a thread for any other owners with similar issues.
It’s a 99 VT ecotec auto
Ever since changing the trans fluid and filter the cars developed a really rough idle to the point where it starts knocking - more of a low end noise.
In Park reverse and neutral the car is quiet and doesn’t vibrate but when in drive it gets quite aggressive and noise disappears when accelerating/taking off.
I’ve tested conditions where the issue arises when it is only in drive gear at a stop (handbrake or brakes add no effect). Trans fluid level checked all ok in park at operating temp. However, thermostat seems to play up usually the car sits around half to one notch above cold. Noticed in drive at a stop while car is warm the noises are much less aggressive, also cars running 15/40 semi synthetic thinking of going back to 20/50 cos cars hitting 200ks soon and it’s developed all these noises since using the oil
Cheers
I’ve dug deep within all the forums related to this issue couldn’t find any specific answers so thought to start a thread for any other owners with similar issues.
It’s a 99 VT ecotec auto
Ever since changing the trans fluid and filter the cars developed a really rough idle to the point where it starts knocking - more of a low end noise.
In Park reverse and neutral the car is quiet and doesn’t vibrate but when in drive it gets quite aggressive and noise disappears when accelerating/taking off.
I’ve tested conditions where the issue arises when it is only in drive gear at a stop (handbrake or brakes add no effect). Trans fluid level checked all ok in park at operating temp. However, thermostat seems to play up usually the car sits around half to one notch above cold. Noticed in drive at a stop while car is warm the noises are much less aggressive, also cars running 15/40 semi synthetic thinking of going back to 20/50 cos cars hitting 200ks soon and it’s developed all these noises since using the oil
Cheers