A/T bang
12-02-2009, 10:42 AM
#21
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BTW, I was reading about this fluid change. There are 2 methods: complete flush and the one we are used to. The difference is that with the usual method half of the TC and the cooling line of the tranny will keep the old fluid. The flush method uses a machine ($$$) that changes the fluid with the engine running and thus, removing completely the old fluid. But to remove all the old fluid this machine runs 2 liter of fresh new fluid to trash with the old one. About the TC I give up, there is no way. But about the cooling line, I was reading a post from a guy saying to disconect the line and put compressed air in to remove the old fluid. Is it a good idea? Does anyone know this procedure? It sounds risky...
12-03-2009, 05:21 AM
#22
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My belief is that the power flushing is a bad idea. I'm not certain, but it uses higher pressure on the new fluid to get the old fluid out, and that can put too much pressure on internal seals. Since the torque converter seal is a known weak point, I would strongly advise not to have it flushed.
What I would recommend if you want to get most of the old fluid out is to drop the pan and just drain and refill the fluid. This will get out 5.5 liters of the 9.5 capacity. Then run the car for a while and let the new oil circulate and then drop the pan again and replace the filter and gaskets and add another 5.5 liters of new fluid (some have even replaced the filter in the first step also, so they don't contaminate the new oil). This should get out around 80 to 90% of the old fluid and will take care of clearing the converter and cooling lines. It may be more expensive this way, but it really is the only way to get the most used oil out without harming the internals in the tranny.
What I would recommend if you want to get most of the old fluid out is to drop the pan and just drain and refill the fluid. This will get out 5.5 liters of the 9.5 capacity. Then run the car for a while and let the new oil circulate and then drop the pan again and replace the filter and gaskets and add another 5.5 liters of new fluid (some have even replaced the filter in the first step also, so they don't contaminate the new oil). This should get out around 80 to 90% of the old fluid and will take care of clearing the converter and cooling lines. It may be more expensive this way, but it really is the only way to get the most used oil out without harming the internals in the tranny.
12-03-2009, 06:56 AM
#23
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My belief is that the power flushing is a bad idea. I'm not certain, but it uses higher pressure on the new fluid to get the old fluid out, and that can put too much pressure on internal seals. Since the torque converter seal is a known weak point, I would strongly advise not to have it flushed.
What I would recommend if you want to get most of the old fluid out is to drop the pan and just drain and refill the fluid. This will get out 5.5 liters of the 9.5 capacity. Then run the car for a while and let the new oil circulate and then drop the pan again and replace the filter and gaskets and add another 5.5 liters of new fluid (some have even replaced the filter in the first step also, so they don't contaminate the new oil). This should get out around 80 to 90% of the old fluid and will take care of clearing the converter and cooling lines. It may be more expensive this way, but it really is the only way to get the most used oil out without harming the internals in the tranny.
What I would recommend if you want to get most of the old fluid out is to drop the pan and just drain and refill the fluid. This will get out 5.5 liters of the 9.5 capacity. Then run the car for a while and let the new oil circulate and then drop the pan again and replace the filter and gaskets and add another 5.5 liters of new fluid (some have even replaced the filter in the first step also, so they don't contaminate the new oil). This should get out around 80 to 90% of the old fluid and will take care of clearing the converter and cooling lines. It may be more expensive this way, but it really is the only way to get the most used oil out without harming the internals in the tranny.
And for the price for flushing at the shop I can buy 2 kits from Blauparts.
Thanks!
. I'll tell this to the shop guy...
11-09-2011, 03:49 PM
#29
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Hi, yeah the bang is completely gone. To the ones with the same issue, I replaced the transmission filter, pan gasket and fluid filled to the top. After that, the bang was still present but with time it was getting rare until the day it was gone. It's absolutely fine now. Hope that helps!
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Bebeto
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01-12-2009 07:12 AM
