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Post by Titan on Mar 17, 2005 6:09:46 GMT -6
hello all, Im new to this forum and about 3 weeks ago i bought a 95 aurora. Wow I love this car! But this morning the service engine light was on and when I shifted from park to drive there was a clunk. tried again same results. outside temp was 27 deg. while driving i noticed that the clunk was still there just not as bad. could this be vacuum related?
thanks
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scottydl
Super Moderator 
There's nothin' like an American V-8...
Posts: 7,373
Staff Member
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Post by scottydl on Mar 17, 2005 12:40:12 GMT -6
How does it occur when driving? Between all gears, only certain gears? At certain RPM's? How many miles does your Aurora have on it, and do you know if the transmission has ever been serviced (fluid changed)? I know our tranny experts around here will want to know all that stuff.  P.S. Welcome to the Club! ;D |
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Post by kobalt on Mar 17, 2005 13:30:33 GMT -6
A loud clunk when shifting into "D" in a FWD car usually means that the front engine mount needs replacing. To confirm have a friend shift the car into "D" while the hood is open - a forward jerk of the engine more than 3/4" or so signifies a bad mount.
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Post by Titan on Mar 18, 2005 6:52:13 GMT -6
I took it to a trans guy. It has a code 76, which im told is the Trans pressure control solenoid. $695 just to drop the tranny and determine if any other problems exist. Up to $3000. for rebuilding components. The car has 90,000 miles on it. The problems improves when the car gets warm. As far as the tranny being serviced I can only guess but believe it was.
o.k. tranny guys does that sound correct.
thank you
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ITGeek
Aurora Watcher
Unlike some geeks, I actually get my hands dirty.
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Post by ITGeek on Mar 18, 2005 15:40:38 GMT -6
There are three primary transmission related reasons for clunking on the Aurora when shifting from park into either forward or reverse.
1) Trans pressure solenoid.
2) Turbine speed sensor.
3) Shift solenoids
These are pretty common problems from what I have read. The first two do require that the tranny be dropped to get to them. The parts are pretty cheap, but the labor to drop the transmission is pretty steep. If you are going to have the work done, I'd recommend replacing each of these items while they have it out.
If the transmission shop doesn't know about these problems, then I'd take it to someone who does know. I've read quite a bit on other forums, and these three items are at the top of the list. If they try to convince you to get the whole thing re-built, then I'd be wary. These transmissions shipped with synthetic dextron III fluid, and are not supposed to need any service. As long as the car hasn't been abused, the rest of the transmission should be fine.
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