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Unread 02-28-2011, 02:59 PM   #1
stryker221982
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Dependability W5A580 Automatic Tranny

Is this tranny dependable? Mine has 93000 miles on it. Just had a tranny service done, no metal shaving in the pan. Seems to shift a little faster and tighter now.

I know the 3.7 is supposedly durable if you maintain it, havent heard much about this tranny though.

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Unread 02-28-2011, 03:21 PM   #2
fitbmxseries1
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probably last a while if maintianed properly, the real test is to see alot of wk on the road pushing 200k in the next 3 years. I know im having some issues with my tranny were it clunks like crazy when its cold.
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Unread 02-28-2011, 03:24 PM   #3
Budasac
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Quote:
Originally Posted by stryker221982 View Post
Is this tranny dependable? Mine has 93000 miles on it. Just had a tranny service done, no metal shaving in the pan. Seems to shift a little faster and tighter now.

I know the 3.7 is supposedly durable if you maintain it, havent heard much about this tranny though.
Did you flush or drain and fill? And is this the first time you've serviced it?
I just hit 80,000 and need to service mine.

Edit: I believe this is also the same trans the SRT8 has in it. So.... if it can handle that beast, I'm sure it has no issues handling the 3.7L.
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Unread 02-28-2011, 03:46 PM   #4
cmdrjim
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Quote:
Originally Posted by Budasac View Post
Did you flush or drain and fill? And is this the first time you've serviced it?
I just hit 80,000 and need to service mine.

Edit: I believe this is also the same trans the SRT8 has in it. So.... if it can handle that beast, I'm sure it has no issues handling the 3.7L.
It is the same transmission in the SRT8, so they put it behind a 6.1L V8. Changing the fluid and filter is the key,
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Unread 02-28-2011, 07:17 PM   #5
stryker221982
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Quote:
Originally Posted by Budasac View Post
Did you flush or drain and fill? And is this the first time you've serviced it?
I just hit 80,000 and need to service mine.

Edit: I believe this is also the same trans the SRT8 has in it. So.... if it can handle that beast, I'm sure it has no issues handling the 3.7L.
I used to work as a parts manager at a Ford dealer and there we used a tranny flush machine and a chemical additive that was supposed to help clean. Pros to this was it flush the entire system which worked well on vehicles which did proper maintance . Cons didnt change the filter or clean/inspect the pan. Also on older vehicles not properly maintained you ran the possibility of clogging the valve body causing more harm then good.

the dealer i brought it to believes more in a drain from the pan change all the filters in this case one and clean/inspect the pan and replace the pan gasket and refill with fuild.

I always have the dealer do this kinda work for the "just in case" clause where if something gets ruined then they are liable
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Unread 02-28-2011, 07:20 PM   #6
stryker221982
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is the W5A580 the same as the 545RFE? i downloaded a factory service manual and it only list 2 trannys for this the, 545RFE and the NAG1

my as built data shows the W5A580 as the option used
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Unread 02-28-2011, 07:37 PM   #7
justa4banger
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Strker, the 2 trannies are different...

NAG1 is a W5A580...

aslo do some searching around as there are part numbers on this forum do acquire a Dipstick for your NAG1/W5A580
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Unread 02-28-2011, 07:41 PM   #8
90grandoneer
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No, it is not the same as a 545RFE, but the NAG1 is the W5A580. It is a Mercedes based transmission and, IMO, is far superior to the 545. It is also used in the 6.1 SRT8 WK, and I have one in my Hemi Magnum. I have the 545 in my Hemi WK, which cannot (at least on my 06) be made into a true autostick with a tuner like the W5, has better gearing (very similar to the early GM Hydramatics), and a better shift schedule and converter lockup scheme, just to name a few. If I could easily convert, I would.
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Unread 02-28-2011, 09:32 PM   #9
Lt_JWS
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Had a Chrysler 300C with a Hemi and W5A580 come into our shop about a year ago with hardly any fluid in it and replaced a leaking seal(or wire connector) and serviced the tranny and they haven't had any problems since... I know the 545RFE would have died from that
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Unread 03-01-2011, 05:20 AM   #10
Budasac
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Quote:
Originally Posted by stryker221982 View Post
I used to work as a parts manager at a Ford dealer and there we used a tranny flush machine and a chemical additive that was supposed to help clean. Pros to this was it flush the entire system which worked well on vehicles which did proper maintance . Cons didnt change the filter or clean/inspect the pan. Also on older vehicles not properly maintained you ran the possibility of clogging the valve body causing more harm then good.

the dealer i brought it to believes more in a drain from the pan change all the filters in this case one and clean/inspect the pan and replace the pan gasket and refill with fuild.

I always have the dealer do this kinda work for the "just in case" clause where if something gets ruined then they are liable
There is a TSB about flushing. Chrysler doesn't recomend it, and they say never use any chem additive. The dealer actually did the right thing. My dealer is still pushing the flushes. I guess they paid all that money for the machine and want to use it.
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Unread 03-01-2011, 06:34 AM   #11
BonesWK
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Quote:
Originally Posted by Lt_JWS View Post
I know the 545RFE would have died from that
sure would have - I know mine did
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