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Thread: Need advice or suggestions on transmission woes!

  1. #1
    Poncho
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    Default Need advice or suggestions on transmission woes!

    So here's the scoop on my '87 Grand Marquis. A little over a year ago, the plastic TV grommet finally snapped. After getting it somewhere stationary, I ordered the bronze one and replaced it. And all seemed well. The transmission shifted like normal so I thought I got off scotch free. I drove it minimally afterwards without a hitch. Fast forward to last weekend, I was heading to the store and as I was accelerating, in overdrive to be exact, the car stopped accelerating. Only the torque converter would rev up but no speed/forward motion. I let off the gas pedal and tried again. Then the car started accelerating again but it would never kick into overdrive. And at a certain speed it would slip again into no acceleration, only revving. So to get home I had to continuosly let off the gas pedal then accelerate until it started revving then let off gas pedal and repeat. I checked the TV cable and the grommet was still in place. I'm hoping the fix is something simple and not because my transmission finally give out on me. Has anyone else dealt with this sort of thing before? As always, thanks for the help.
    @Ryan.Madison68

  2. #2

    Default

    Check the fluid level and color. Hopefully its just low but it sounds like the od band is gone.


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  3. #3

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    x2 on checking fluid and level.
    Then, make sure the TV cable is adjusted properly--you didn't mention adjusting when you replaced the grommet, and more importantly, you don't mention checking to make sure it's still in adjustment now.

  4. #4
    Poncho
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    Default

    Good point on adjusting the TV cable. I didn't do that initially. I'll look into that. The fluid level and color was fine cold when I checked a day or so later. I'll start it back up and check it hot. Thanks guys.
    @Ryan.Madison68

  5. #5
    I'm an air-conditioned gypsy gadget73's Avatar
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    If you have 1-3 but no 4, you lost the overdrive band. Run it in D and start saving for a rebuild. The OD band is the weakest point of the trans and what is most likely to fry when the TV cable fails.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  6. #6
    I post a lot... knucklehead0202's Avatar
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    ^^^That. Drive it around in "D" and see if it behaves ok. If so, yeah, your OD is cooked. You may be able to nurse it along for a while like that but ultimately it needs a rebuild. Do check fluid level/color though. Never hurts.

  7. #7
    The Brown Blob 87gtVIC's Avatar
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    I normally drive around in D and only put it into OD when I feel it is necessary. Helps keep wear off the OD band and keeps me happier from the aod early OD shift point. I religiously pop it into OD around 55 or highway cruising speed. Anything under that it is lug/bog city (exaggeration but some will understand). You may be okay for some time with just the three forward gears...all depends if you are okay with higher RPMS on highway runs.
    ~David~

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    Quote Originally Posted by DerekTheGreat View Post
    But, that's just coming from me, this site's biggest pessimist. Best of luck

  8. #8
    I'm an air-conditioned gypsy gadget73's Avatar
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    when I got my car it was in OD at 33 mph. The Mark VII was about 36. Waaaay too soon. Its now set so it will do OD right about 52 which is tolerable.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  9. #9
    Beater gonna beat sly's Avatar
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  10. #10
    I'm an air-conditioned gypsy gadget73's Avatar
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    i added a zip tie under the crimp on the end of the cable and found that the wide one was about right. Moved the block that distance and it was happy. The zip ties work as an easily un-done adjustment to see if it helps or not.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  11. #11
    I post a lot... knucklehead0202's Avatar
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    Quote Originally Posted by gadget73 View Post
    i added a zip tie under the crimp on the end of the cable and found that the wide one was about right. Moved the block that distance and it was happy. The zip ties work as an easily un-done adjustment to see if it helps or not.
    Same thing. My car shifts into OD between about 45-50, which is fine. Like 87GT said though, i usually just keep it in D unless i'm going over 50 or so. The fact that these things HATE coming out of OD annoys the piss out of me so if i can avoid it, I will.

  12. #12
    I'm an air-conditioned gypsy gadget73's Avatar
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    yeah its not the most responsive thing, especially with stock cable tuning. The stock adjustment is just garbage to drive.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

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