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Hmmm....
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Discussion Starter · #1 ·
BMAP vacuum hose on 82 351W (now with pics)

anyone know where this vacuum hose hooks up to??? theres a coffee can looking thing behind the battery, and bolted up to it is a little thing that has a sticker that says BMAP on it, and 2 vacuum hoses are hooked to it, one is not hooked up anywhere, and its the one that says "manifold" where it starts. i believe it is causeing my tranny to shift high, and cant think of anything else it could be, please let me know where this thing goes. thanks~~~>Ben
 

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Hmmm....
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1,382 Posts
Discussion Starter · #5 ·
the thing right behind the battery, it has the vacuum hose comming out the bottom right of it, i need to know where it goes, i read somewhere it goes to the Manifold Vacuum but i dont know where that is


heres the engine bay, if anyone knows where to hook it up please draw a circle around where that is, or explain it to me.





there are the pics, please help
 

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Hmmm....
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Discussion Starter · #9 ·
ok, so i hook up the vacuum hose to the tree, does it matter which one i hook it to b/c that didnt work?? i had to pull off a hose that was capped and then put the BMAP one there. Is that a problem, did i put it in the wrong place?? and my tree only has 6 hook ups, unless i looked over one of them. thanks~~~> Ben
 

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Hmmm....
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Discussion Starter · #14 ·
ok from the beginning, a little over year ago i was messing w/ the richness/leanness of the engine, i took off after doing a little tweaking, and it stalled, the flap thing on the carb closed and wasnt letting air in, so i opened it and then started it up and drove off, and ever since then the tranny has shifted high/late. Like it wont shift to second until i am going like 15-25 and THEN let off the gas, but if i slow down a little and then press the gas it shifts back down to 1st and goes up to about 3K + RPMs

We then got the tranny rebuilt which did practicly nothing, then took it to some carb specialist who "said" he didnt do anything and magically it stated to shift like a dream.

NEXT, i took it offroading about a month ago and it was shifting perfect, i was in 4lo most of the time, doing hill climbs, when i take it out of 4lo it is doing its same old shift high crap, and i notice the vacuum hose hanging under the truck, so i figured that was it. and that puts me here presently. this has to be some easy fix. but i dont know crap about tranny's or how they work

i also noticed that the "i think" kickdown lever thing has a lot of play, but it is hooked up. if that might have something to do w/ it.

noone did any mods to it that i know, for 1.5 years the tranny shifted like a freaking dream
 

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Hmmm....
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1,382 Posts
Discussion Starter · #24 ·
Zach94 said:
What kind of trans is it. Aod's used TV rods/cables. C6's used either a kickdown rod and/or a vacuum modulator. When you opened the choke plate that should not have affected your throttle linkage, if it did you should have noticed it idling higher. Also, if you manually opened your choke, is that picture as far open as you have it, or does the electric choke work now.

I would not mess with the TV cable, if that is what is wrong, it is off because the throttle moved and that should be fixed. Driving with a TV out of adjustment can fry your AOD
Its a C6 tranny, the choke plate sits like it does in the picture normally, should it sit another way? and i do believe the electric choke works, when its cold it idles high til it warms up, i guess thats it working.
 
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