ZR-1 Net Registry Forums - View Single Post

Franke · 10-28-2013

4 cam - Mark, If this car is stock then one of the first things you should consider is the injectors. If original they don't like ethanol fuels and eventually start shorting the coils. I had 4 bad ones and they were a great part of my tranny noise due to some misfire. When I replaced them I was surprised at how much quieter my trans noise was. I have 56K miles on it now. I use redline MTL in the trans and it seemed to shift a little smoother but that could be due to new fluid more than anything else. I would change all the fluids since you could have water vapor contamination due to the years of sitting. Then if the loud gear whine doesn't subside I would pull the box for a look see inside.

10-28-2013	#10
Franke Join Date: May 2013 Location: Beaver, PA Posts: 515	Re: gearbox/transmission noise 4 cam - Mark, If this car is stock then one of the first things you should consider is the injectors. If original they don't like ethanol fuels and eventually start shorting the coils. I had 4 bad ones and they were a great part of my tranny noise due to some misfire. When I replaced them I was surprised at how much quieter my trans noise was. I have 56K miles on it now. I use redline MTL in the trans and it seemed to shift a little smoother but that could be due to new fluid more than anything else. I would change all the fluids since you could have water vapor contamination due to the years of sitting. Then if the loud gear whine doesn't subside I would pull the box for a look see inside.