What are some symptoms of too much transmission fluid?
Excess transmission fluid will cause foaming in any transmission. Foam does not flow like oil, reducing cooling and lubrication. It also implodes on compression between gears or in the hydraulics of automatic transmissions, causing severe damage (pitting).In an automatic transmission, you will have higher temperatures and poor shifting, as it depends on solid hydraulic pressure, not spongy foam to move the clutches and bands.Automatic transmissions with dip sticks should be measured with the engine running, and consider the operating temperature. Note here how the heat affects the measurement. It should not be filled to the top when cold, or checked not running.If it does not have a dipstick, it is measured with the plugs on the side, depending on specific instructions per brand of car.Manual transmissions normally don't have dipsticks (some do). They are checked from a plug on the side of the transmission, and the level should normally be at the level of the plug, not above.
Rattling noise at idle in a GM 6L80E transmission?
The sound seems to be coming from the just behind the bellhousing. Dull metallic rattling. This is a salvaged engine and transmission out if a 07 escalade. Installed it in a hot rod, and when we first started it up there was no rattling. We then installed a trans cooler, first start up with cooler it made rattling sound. Fluid level seems good. Though we did loose dome during cooler installation. Fluid is at the cooler. Not sure what thus noise is...any ideas? Thanks