1985-1998 [Subscribe to Daily Digest] |
 | [Main 9000 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
And fluid changes, maintenance, and luck Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Fri, 15 Jun 2007 05:02:40
In Reply to: Re: Auto Tranny on 97, Willy, Fri, 15 Jun 2007 00:57:23 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The autotrans aren't that bad, it's just that we expect the transmission to last as long as the engines. The engines are just great.
At 120 Km, your transmission is still young at an equivalent 75K miles. Most issues don't usually show up until after 100 K miles.
However, in addition to not beating on the transmission, regular fluid changes and filter cleaning can only help. Also, if the transmission starts to act funny, don't ignore it, hoping it will go away. There are many tranny problems that can be fixed easily and with the transmission in the car, such as broken valve body springs or leaky govenor seals. The tranny is still driveable with these problems, but it stresses it badly, and the secondary damage can be pretty bad. So fix the small problems promptly.
Lastly is luck. I don't think the ZF tranny in the 9000 is necessarily a bad design, other that I suspect it wasn't designed for assembly. What does that mean? It means how easy it is to assemble it properly. If everything goes together just right, the tranny will last forever, as evidenced by autoboxes that have, well, run forever. But even following the manual, there are tolerances that can't be controlled, and those can kill the tranny, sooner or later. So some die very soon, and others usually make it to 120K miles.
I had a tranny rebuilt by a shop, and it blew up on the test drive. They rebuilt it again, and it died in 7 miles. These guys did know what they were doing. Eventually they grabbed another tranny out of a junker and swapped housings, and rebuilt that. It worked just fine. There was just some tolerance in that case which caused problems.
posted by 192.249....
, Thu, 14 Jun 2007 14:31:52, Fri, 15 Jun 2007 05:02:40 <-- Viewing This Message
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
