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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

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    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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    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

  13. #13
    Poncho
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    Okay guys. Since there's more daylight in the evening, I'm ready to tackle this TV cable adjustment. Here's a picture of my setup. Do you guys have any tips on setting it? I'm going to follow the guide Sly suggested. And it appears I have the block type TV. I felt around it today after getting the air box off and I couldn't tell where the the push tab was inside of the block. Any help?

    @Ryan.Madison68

  14. #14
    GMN Regular DerekTheGreat's Avatar
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    Gadget made some good points about temporary adjustment methods to try and gauge an improvement. This video is what helped me most before that:

    Like mentioned though, OD is dead and gone. Best you'll get is improved shift feel and longevity out of the other three remaining cogs. Ashley's old '89 only had 2-3 before we rebuilt it. Drove it a long time before we were able to have it rebuilt.
    1985 LTD Crown Victoria - SOLD
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  15. #15
    I'm an air-conditioned gypsy gadget73's Avatar
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    I've been driving one with stock adjustment for a couple days. Holy hell I'd forgotten how shit that is. OD at 35 mph, fuuuuuuuuu

    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

  16. #16
    Poncho
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    Update: So what's been suggested has turned out to be true. The transmission has been burned up. The shop quoted me at $1800-2000 to rebuild. Does that sound like a fair price?

    Also I have a freeze plug near the lower manifold on the driver's side that's been leaking antifreeze. What kind of damage do you guys think that's doing? It's been going on for a little while now. Is it causing any motor issues? I guess I'm trying to figure put where I'm at in the process of getting up and running given the need to rebuild the transmission.
    @Ryan.Madison68

  17. #17
    I'm an air-conditioned gypsy gadget73's Avatar
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    last one I had done was like 13 years ago and the going price then was about 1200 bucks.

    there are no freeze plugs in the lower manifold. There is one at each end of the cylinder head. There is a pipe plug in the right rear corner of the manifold and a fitting on the left rear corner. Leaks won't really cause running trouble so long as you keep replacing what leaks, they just make a mess. If its a gasket failure that is leaking coolant between the intake and the block, that needs to be fixed. The gasket could also be leaking internally which would dump coolant into the engine. if it is a rotted out plug, I'd fix that when possible because its just going to get worse. The other problem with rotted core plugs, if one is bad they're all bad. It only happens when the coolant is very poorly maintained. Its also not possible to change the ones on the side of the block without removing the engine, or the ones on the back of the heads without pulling the trans.

    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

  18. #18
    Member WagonMan's Avatar
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    Quick question, Is there freeze out plugs behind the transmission? WagonMan
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  19. #19
    Wagon Addicted Tiggie's Avatar
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    Quote Originally Posted by WagonMan View Post
    Quick question, Is there freeze out plugs behind the transmission? WagonMan
    There is a core plug in the back of the block but I think it’s for the cam not coolant.

  20. #20
    I'm an air-conditioned gypsy gadget73's Avatar
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    There is one on the back of each cylinder head. Should be pretty accessible through the trans tunnel with the trans out, but its not inside the bellhouse area.

    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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