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#1
07-11-2004, 11:56 PM
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87 Grand National hot trans problem
This has been a bit of a stumper. I'm the original owner of an 87 GN which now has 23K miles on it. After the car get good and warmed up in warm weather the trans acts as if it's trying to go quickly into 4th gear. When it gets this way it also seems to be staying in high gear when slowing to a stop or for a corner. I've driven the car with a diagnostic tool hooked up, and the lock-up converter looks to be working properly. To take that out of the loop I have tried unplugging it, but the problem still persists. Trans fluid looks good, pan is pretty clean, and the car hasn't been raced. The problem was very intermittant initially, a few years ago, but now is happenening almost every time it gets hot. Turning off the ignition and re-starting helps briefly. Anybody else seen this?
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#2
07-12-2004, 08:45 AM
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Try adjusting the TV cable. After you get done adjusting it, move it one click back towards the firewall. If you need directions on how to adjust it, just post up and let us know.
Andy
__________________
 Grand National. Going fast with class. Voted FASTEST street car on AF. Here is the proof!!! 1987 Buick Grand National. Back in action!!!! 1999 Ford F-250 Tow rig from hell 598 Ft-lbs. ASE Certified in... Mobile AC On Highway medium duty diesel engines. Off highwayy medium duty diesel engines. On highway trucks. Working on the eletronics certification Member ofA.A.N.B.C- Afer against non boosted crews #2
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#3
07-18-2004, 02:07 PM
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Re: 87 Grand National hot trans problem
Everyone seems to have a different idea how to adjust the thing- I've been told hold the clamp in, then move the throttle fully, then release. Is this manner correct?
Vic
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#4
07-20-2004, 08:33 AM
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push the little button thing, and move the cable all the way back towards the firewall. Let go of the button, then give it full throttle. then very carefully move the cable one click back towards the fire wall.
__________________
Grand National. Going fast with class. Voted FASTEST street car on AF. Here is the proof!!! 1987 Buick Grand National. Back in action!!!! 1999 Ford F-250 Tow rig from hell 598 Ft-lbs. ASE Certified in... Mobile AC On Highway medium duty diesel engines. Off highwayy medium duty diesel engines. On highway trucks. Working on the eletronics certification Member ofA.A.N.B.C- Afer against non boosted crews #2
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#6
09-09-2004, 10:35 PM
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Re: Re: 87 Grand National hot trans problem
Quote:
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