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Cadillac Allante Forum Discussion, New Owners of a 1987 Allante..... in Past Cadillac Vehicle Discussion; With the car off, you press the brake pedal 25 times, then with the key in the run position, engine ...
  1. #31
    carnut is offline Cadillac Owners Master
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    Re: New Owners of a 1987 Allante.....

    With the car off, you press the brake pedal 25 times, then with the key in the run position, engine off, crack open the bleeders at the master and electric supply pump one at a time to bleed. Have at least a qt of fluid handy. The pumps can be had rebuilt thru Allantesource.com or Tom Rohner in Los Angeles if needed. NO a Seville, Eldo and any other Cad had a completely different brake system, not adaptable.

  2. #32
    carnut is offline Cadillac Owners Master
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    Re: New Owners of a 1987 Allante.....

    With the car off, you press the brake pedal 25 times, then with the key in the run position, engine off, crack open the bleeders at the master and electric supply pump one at a time to bleed. Have at least a qt of fluid handy. The pumps can be had rebuilt thru Allantesource.com or Tom Rohner in Los Angeles if needed. NO a Seville, Eldo and any other Cad had a completely different brake system, not adaptable.

  3. #33
    carnut is offline Cadillac Owners Master
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    Re: New Owners of a 1987 Allante.....

    With the car off, you press the brake pedal 25 times, then with the key in the run position, engine off, crack open the bleeders at the master and electric supply pump one at a time to bleed. Have at least a qt of fluid handy. The pumps can be had rebuilt thru Allantesource.com or Tom Rohner in Los Angeles if needed. NO a Seville, Eldo and any other Cad had a completely different brake system, not adaptable.

  4. #34
    carnut is offline Cadillac Owners Master
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    Re: New Owners of a 1987 Allante.....

    With the car off, you press the brake pedal 25 times, then with the key in the run position, engine off, crack open the bleeders at the master and electric supply pump one at a time to bleed. Have at least a qt of fluid handy. The pumps can be had rebuilt thru Allantesource.com or Tom Rohner in Los Angeles if needed. NO a Seville, Eldo and any other Cad had a completely different brake system, not adaptable.

  5. #35
    carnut is offline Cadillac Owners Master
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    Re: New Owners of a 1987 Allante.....

    Sorry for the double post. I failed to mention that once you've pumped the pedal, you must hold it down before cracking the bleeder screw at the master. Did you read the tutorial on www.allantesource regarding diagnosing the brakes? I always used a clear hose submerged in a jar half filled with fluid and slipped over the bleeder screw to bleed my master and supply pump. Less chance of spraying fluid everywhere.

  6. #36
    OffThaHorseCEO is offline Cadillac Owners Connoisseur
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    Re: New Owners of a 1987 Allante.....


  7. #37
    DopeStar 156's Avatar
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    Re: New Owners of a 1987 Allante.....

    Today's events....

    My friend and i got together and spent the whole day with the car. First thing we did was top off the trans fluid, and SeaFoam the car through the PCV. Drove the car back to my place to work on it. I experienced the same thing, poor shifting, and wouldn't drive very fast. We discovered the intake was frozen open and the pedal was stuck about halfway down. We corrected the frozen intake which now moves freely. The car now idles steadily for the most part around 800 RPM's and doesn't seem to stall very much at all. We then took to the soap and water and thoroughly cleaned the exterior of the car. The grime and dirt came off fairly easily to reveal the pearl paint which was in great shape. Took the car for another ride to try it out and we got better performance. We had it up to around 55 mph but the transmission still performed poorly. It has very rough downshifts, especially when going back to 1st when coming to a stop which can best be described as a slam. The car will also slam into gear when put into reverse or drive often stalling out the engine. We examined the trans fluid which we found to be brown for the most part, so it needs a trans service. We then took to the interior vacuuming out a vast majority of the 23 years worth of clutter and trash in the car. We got the driver's power seat to function once again and replaced some interior panels which were removed and never replaced. Then on to the brake system and discovered a leaking brake line going to the driver's front wheel. At about this time we decided to call it a day and head home.....

    In short we need to do the following things to the car. Oil change, repair the brake leak, and transmission service. Hopefully the trans service straightens out the poor performance from the transmission. If the car needs a new trans that may pull the plug on the entire project since I'm not into dropping that kinda money into the car at this time. Everyone keep your fingers crossed it's something stupid like crappy fluid or a clogged filter.......

    Here's the Allante all cleaned up and parked while we had a dinner break......


  8. #38
    carnut is offline Cadillac Owners Master
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    Re: New Owners of a 1987 Allante.....

    Above the throttle body is a series of vacuum hoses plugged into a small manifold. Remove this manifold and clean out the passages. Weak vacuum signals there can affect trans operation. The throttle plate bore should be cleaned with an old toothbrush and intake throttle body cleaner, beware though to clean only the primary (small) bore. Cleaning the larger bore can damage the TPS bolted to its shaft. If you follow these vacuum hoses they become hard metal lines that terminate at another vacuum hose rubber manifold at the rear of the engine just above the trans bell housing. This rubber manifold can deteriorate and cause issues with the trans. When doing the service use DEXTRON VI which is a synthetic blend. This transmission uses a regular vacuum modulator which can leak, so pull its hose off to verify no trans fluid within the hose. Also verify vacuum is present at this hose at the modulator. Excellent job so far!!

  9. #39
    DopeStar 156's Avatar
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    Re: New Owners of a 1987 Allante.....

    Quote Originally Posted by carnut View Post
    Excellent job so far!!
    Thanks, I'm pleased with the progress we made.....

    You seem to be pretty well experienced around an Allante, any tips for the trans service? Everything else I'm ok with but I've never so much as seen a FWD transmission out of a car let alone worked on one......

  10. #40
    carnut is offline Cadillac Owners Master
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    Re: New Owners of a 1987 Allante.....

    The trans service is just like any other trans service. Loosen pan. Remove bolts on one side to allow the pan to tilt to speed up draining. Remove the rest and replace the filter. Should have nothing in the pan but fluid and some silver mud. Do the service AFTER all the vacuum lines I mentioned are cleaned and vacuum is verified at the modulator.

  11. #41
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    Re: New Owners of a 1987 Allante.....

    Side questions.... How do you raise the soft top? I pulled it up manually but it won't go all the way to the windshield. It stops like 6 inches from the windshield and will go no further. Also the hard top won't lock into place in the middle where that loop is that goes into what resembles a hood latch. Tips?!

  12. #42
    OffThaHorseCEO is offline Cadillac Owners Connoisseur
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    Re: New Owners of a 1987 Allante.....

    for the hard top pull the latch that says soft top/hard top release, i cant remember if its the bottom latch or top latch behind the driver seat.
    that should open the "jaws" and allow the J hook to engage. you can then use the rocker switch to lower it.

    on the soft top... are you engaging the FRONT hooks before the rear hook? the rear "bow" should stay locked until the front hooks are attached

  13. #43
    OffThaHorseCEO is offline Cadillac Owners Connoisseur
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    Re: New Owners of a 1987 Allante.....

    here are instructions i posted for another member a while back

    Quote Originally Posted by OffThaHorseCEO
    to raise

    - lower both windows or open both door (my windows dont roll yet)

    - pull the switch to release the soft top hard cover

    - slide the cover back then open

    - pull the top up, until you get used to operating it, its best to do this with a helper, from both sides, and in a slow fluid motion. i usually grab the top by the latch handles, and by the rear bow and pull up and forward

    - pull open the latches on the front of the soft top to lower the hooks

    - manually engage the hooks, if you have a partner, close the latches together at the same time, if you dont have a partner, i go halfway with one, then go to the other side, go all the way with the other, then come back and finish the first side.

    - AFTER the latches are engaged, go to the driver side and look right behind the driver door, right above the weatherstrip for the top. you should see a red latch, push the bottom of the soft top torward the front of the car a bit and release this latch but dont lower the back of the top yet

    - close the soft top hard boot and slide forward, make sure it snaps in place

    - inside the car, behind the drivers seat, on the underside of the boot is a rocker switch. iirc if you push it torwards the passenger side it lowers the pulldown assembly, torwards the drivers side it raises it. if its on the way up, you cant lower it until it gets to the top, if its on the way down you cant raise it again until it hits the bottom.

    - You want this assembly raised. you may have to lower it all the way first and then raise it.

    - So now, the front should be latched in, the back should be released, the boot cover closed securly and the pulldown mechanism should be in the up position using the rocker switch.

    - grab the bottom of the soft top near the hook and gently lower it about halfway. you may TRY to gently lower it onto the pulldown assembly but it may not work. what i do is lower it about half way then firmly push it down, you could almost call it slamming it down. after that use your hand on the bottom center of the back glass area to keep pressure on the latch assembly. once it clicks your done!

    If any of that doesnt work post back please



    to LOWER the top if its raised completely, meaning pull down assembly is latched

    - Pull the lever behind the drivers seat to release the top from the pulldown assembly

    - grab the rear "bow" (bottom of the soft top) and pull up and torwards the front of the car

    - AS YOU DO THIS, there is some fabric that MAY try to fold inward or downward. Again it helps to have a helper here. Try to make it fold outward instead. The two places are at the "C pillar" and at the very back of the "roof"

    - Now pull the bootcover release latch

    - slide the bootcover back and open

    - push the rear bow torward the front of the car and engage the latch with the red handle, which will secure the rear bow in the up position. if you manipulated the folding material correctly, this should be VERY easy

    - unlatch both the hooks from the front of the soft top

    - slowly push the top up and back

    - AGAIN THIS TIME watch how the fabric fold, there should be a HUGE piece of it that is supposed to fold outward, if it folds inward, your top will not lower all the way. it helps again to have a partner here until you get used to it

    - now finish lowering it, my fabirc usually ends up covering the pulldown assembly so i move it off of there and make sure it all stuffed down correctly and lowered correctly.

    - when your confident its as low as it can go, close the boot cover again.



    again, if anything doesnt go as planned, post up here
    im still not necessarily a pro at top raising/lowering so theres probably faster/easier ways but this is the way that works for me

  14. #44
    DopeStar 156's Avatar
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    Re: New Owners of a 1987 Allante.....

    Soooo....... is it a manual soft top, or a power one? I dodn't see a rocker switch, I'll have to check again. The owner's manual made no mention of one. Just the release levers for the hard top and the boot cover.

  15. #45
    OffThaHorseCEO is offline Cadillac Owners Connoisseur
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    Re: New Owners of a 1987 Allante.....

    oooo yea manual softtop

    once you remove the hard top youll see 2 levers behind the driver seat, the bottom one will release the soft-top boot cover, it should pop up slightly, you can slide it back the up...

    then manually lift the soft top using the instructions above

    the rocker switch is on the underside of the rear shelf behind the driver seat. reach under there and feel around or have a peek under there. its purpose is to manually raise or lower the top pulldown assembly (the trunk latch looking thing) in case it accidentally improperly latches and lowers on its own.

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