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| Transmission fluid level confusion http://www.pontiacbonnevilleclub.com/forum/bonneville-gxp-northstar-powered-cars/topic50371.html |
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| Author: | skregal [ Mon Mar 20, 2017 7:14 pm ] |
| Post subject: | Transmission fluid level confusion |
The tranny in my GXP has a leak at the hose snap-in fitting. The leak is kind of bad but I have been putting off replacing the fitting. JB weld worked for about a month but it still leaks horribly. Anyway, I have been trying to watch the fluid level closely so it doesn't get low and I can't get a good reading on the stick. When I pull the stick on a cold non-running car it is completely clean with no fluid on the stick at all. When I warm up the car and pull the stick while it's running and in neutral the stick is completely coated to the top - over the full mark. What gives? The car is on flat ground and I wipe the stick clean first before I reinstall tight, and then pull it to check the level. Also the stick has markings that say "Cold" and "Hot" but no matter which the engine is, it still covers the entire stick with fluid. I thought maybe I overfilled it, but I have been wiping up puddles every day in my garage for a month and the level indication has not changed, despite daily driving. |
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| Author: | RJolly87 [ Mon Mar 20, 2017 9:58 pm ] |
| Post subject: | Re: Transmission fluid level confusion |
I assume you are pulling the stick, wiping, and then re-dipping to get the level, correct? |
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| Author: | skregal [ Mon Mar 20, 2017 10:08 pm ] |
| Post subject: | Re: Transmission fluid level confusion |
Yes, that's why I wrote... skregal wrote: The car is on flat ground and I wipe the stick clean first before I reinstall tight, and then pull it to check the level. Sorry.... couldn't help it. |
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| Author: | ddalder [ Mon Mar 20, 2017 11:26 pm ] |
| Post subject: | Re: Transmission fluid level confusion |
Never had a problem checking mine. Does it look like there are any tiny bubbles in the fluid? Perhaps cavitation is causing the fluid to foam or splash because the level is really low? My GXP is in storage right now so I can't check, but if I'm not mistaken, there was always fluid on the tip of the dipstick (even when not running). The level of course changed appropriately when it was running. |
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| Author: | CMNTMXR57 [ Tue Mar 21, 2017 11:33 am ] |
| Post subject: | Re: Transmission fluid level confusion |
Always check transmission fluid when it (the transmission) is warm/at operating temp and the engine is running. |
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| Author: | harofreak00 [ Tue Mar 21, 2017 11:51 am ] |
| Post subject: | Re: Transmission fluid level confusion |
Quote: Transmission Fluid Checking Procedure Applying the brake pedal during this procedure will affect the fluid level reading. 1. Start the engine and operate the vehicle for 15 minutes or until the transmission fluid reaches an operating temperature of 82-93°C (180-200°F). 2. Park the vehicle on a level surface. 3. With your foot on the brake, move the shift lever through each gear range. Pause for about 3 seconds in each range, ending in Park. 4. Apply the parking brake and let the engine idle for 3 minutes. 5. Remove the transmission fluid level indicator, wipe the indicator clean, and reinsert the indicator. Give the indicator a full twist to close. 6. Wait 3 seconds and remove the indicator. 7. Read both sides of the indicator. The fluid must be within the hot cross-hatched area using the lowest level reading. Quote: Dry Sump Oil System
This transmission uses a dry sump method of operation. There is no reservoir of fluid in the bottom pan during operation. The majority of fluid remains in the side pan. Fluid is continuously supplied from the bottom pan to the upper valve body. The upper valve body distributes fluid to the necessary components. The three pumps operate in the following manner: Scavenger Pump -This pump continuously supplies fluid to the side pan by scavenging oil from the bottom pan. Primary Pump - This pump operates on fluid from the scavenger pump and supplies line pressure for all gear ranges. Secondary Pump - During demand driving situations such as forced throttle downshifts, wide open throttle upshifts, and Reverse, this pump helps the primary pump to reach the boosted line pressures that are needed. The secondary pump also helps supply the fluid capacity to the necessary clutches during initial engagement. |
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