I have a new problem, just after I changed my fluid and filter, had soft shifts from 1-2 and 2-3(Ken, this is what I mentioned to you last week), also had trouble staying in OD. Right before I was going to pull the pan, I thought I might have knocked my TV cable adj. out of whack while I was under the hood doing the fuel regulator upgrade and other maint.
Anyway, I moved it one notch and that took care of the 1-2, 2-3 shifting, but it will not stay in OD. It will for a short time when the Trans is cold, then as it warms up it shifts back to 3rd. I do have TCC.
A few times I have been able to get it into OD by shifting it manually 1-2-3-4, with slightly higher shift points than auto, but it only stays in OD for a few seconds, then right back to 3rd.
Everything looks good from the Turbo-Link, at least as far as I can tell from my first few times using it. (TPS,Temp, TCC etc)
Any ideas? I never had any problem like this before changing the fluid and filter. Could I have missed something inside? Maybe adjusting the TV cable is partially masking the real problem?
Thanks in advance
Mark Tonazzi
87 GN
Try taking out some tv and see if it goes away and/or changes. What you are looking for is change.
Bruce
WE4
... as Bruce said ...
Also, I wonder .. did you find a wide band on the trans filter that you removed or an O ring?
Did the filter that you installed look like a wide band or was it an O ring.
Also, did the filter "snap" into place?
My thought is that it might be fluid aereation?
Actually, I did not do the change myself, the mechanic that I go to did it, but I stood there and watched everything.
He said the filter was of a newer type that does not have the O ring, and uses a screen instead of fiber, I got it from ATR.
He has done work on all my cars, very experienced and thorough, used to work at a GM dealership and was their top guy, went into business for himself. Has actually fixed some things I thought were beyond repair.....yes, I can be a bit hard on cars now and then.
My plan was to play with the TV cable and see what happens, then go inside again as a last resort.
While I'm at it, I have quite a bit of oil blowing out of the oil filler area, never noticed this before. Of course the car has never ran this good before, and I have never boosted quite as much as now with the Thrasher 92.
The filler tube does not fit real tight, could this be all it is or something more serious?
Thanks
Mark
OK., here's the latest in the shiftless saga, I played around with the TV cable, and eventually set it back to factory spec since that was where I had the best feeling shifts anyway.
Changed the fluid and filter just to be sure and checked the band on the filter neck, made sure filter was not out of position etc. All looks good, go to drive it and it shifts into OD fine, then as I begin to accelerate, at right about 65 mph (where you normally drive on the highway), it shifts back to third.
I can manually manipulate the shifter (D to OD a few times) and accelerator (lifting and gradually getting back into the throttle) and get it back into OD. Sometimes it feels like a solid shift and will stay there for miles, other times it wants to keep dropping out and other times I feel the TCC going on/off on/off while in OD.
My guess is that the TV cable has a worn spot (stretch or kink or frey or something).
Any other ideas?
Thanks!
Mark
What it's not!
Finally got the correct T.V. cable from Jim Pace Performance Parts (Part # 25532115), installed, adjusted to factory spec, no change.
I cannot imagine it being the shifter cable, but I can almost always get it to go into OD by manually shifting, even just going through the gears 1-2-3-4 while sitting still, then take off and get OD.
Thoughts???
Thanks,
Mark
I have a similar problem with my 87 GN. On the highway is seems to stay in 3rd, and not go into OD at all. Sometimes I can feel the change to OD, but then it goes right back into 3rd. The TV cable has not been touched, and the tranny fluid and filter (Fram)(rubber O-ring gaskety thing came out, and I put the new one in)was changed at the begining of the summer. You can even feel the pull of the engine slowing the car down when you let off of the gas.
Any ideas?
Charlie
KngCharles@aol.com
87 GN, mostly stock
TRY ANOTHER CHIP IN THE CAR AND SEE WHAT HAPPENS
FRANK
Well, the chip has absolutely nothing to do with the trans shifting. Unless of course you're talking about TCC as feeling like 4th gear, if so then what you feel is normal. I suspect, as I assume Bruce will that you have a internal leak. I'd guess something in the 4th gear circuit as TV or governer would affect all gear ranges. What you think Bruce? Ken?
Ok, my mistake. It is staying in OD, but I think that the TCC is staying locked up. While at cruise (65mph) on the highway last night I let off of the gas and shifted it from OD to D, and the change was vey noticable. (D at 65 should be 3rd gear right?) Anyway, it went from a steady 2300 rpm to more like 3000 when I did the shift.
I will be taking t-link on the ride with me today to tell for sure.
More when I get home tonight,
Charlie
KngCharles@aol.com
87 GN
One other thing it could be is your brake switch.
IF your brake is pressed, it will unlock the TCC. If your brake switch is close, it can unlock it when you don't step on it. In my GN, I had it unlock when I hit a bump. I would reset the switch, and if I got my foot on the pedal, just getting out of the car or something, I would pull the pedal up enough to move the switch. Try driving and holding the pedal up a little, and see if it acts different.
Brian
I am finally going to see my GN again this weekend, last time I drove it with the new TV cable I could not get 4th gear at all.
In an effort to continue my troubleshooting, what would happen if I disconnected the TV cable, trying to eliminate sources of the problem one at a time, this being to eliminate the TV area altogether. Isn't there a governor like the 700R4 that would take over shift points? How should it shift then? Chance for damage?
Thanks,
Mark
Well, as many of you suspected, it was a small piece of the O-ring seal from the original filter that must have broke off and was stuck in the valve body.
I now have a completely cleaned valve body, new fluid and filter, correctly adjusted and fully operable Overdrive.
Merry Christmas to me!
Mark