Topic: 1981 turbo trans am map sensor hookup

[78w72]

joe, thanks for the pics. i noticed on one of the shots of the eng bay that the sensor i have is missing on the pic. do you see the little metal tab that is attached to the metal line? mine has a sensor mounted to that tab. it has a vac line going to it, but i cant figure out where the rest connects to. mine is definantly different looking than the pic.

can you explain how i post pics here.....that way i can show you what i am reffering to.

i will try the t fitting to verify boost too.

thanks again. scott

[jjr]

 How to post pictures...

 The hardest concept in posting is the url.

 URL stands for "universal"  "resource"  "locator"

 It's a fancy Internet-computer name for "where can I find it?"

 web site/page addresses are url's and they point to a file with
a .htm or .html after it. Same exact thing is used to reference
a graphic file, that is a file ending with a .jpg or .gif to name a
couple.

 So once you have a place to put pictures AND you know the
address to that place you're almost set.

 Upload your picture, and then in your post list where it can
be found with a   img  in brackets at the first and a  /img in brackets
at the end. Use the "Preview" button to check you got it
right.

 Most email accounts or Internet access accounts have with them
a certain amount of space, that or photobucket is popular.

 I think that tells it...

 Joe R

[78w72]

great i will try that

what about the mystery sensor??? do you know what it is. like i said it attaches to the metal tab on the metal line in your pic of the engine bay/air mng valve.

this isnt good if YOU dont recognize it.

[jjr]

 Actually, now that I look at the picture and think about it, that particular
car as it sits, has two solenoids missing.

 1) EGR solenoid (attaches to thermo housing)

 2) Canister purge solenoid valve

 The second one attaches on the tube in question if I remember right.

 I selected that car/engine because it showed the air management valve real well,
but you did say "area". I'll have to go look on one of the other two. I thought
it was the air management thingy that didn't look right. ok...

 Joe R

[jjr]

 Ok, I found a pic that shows the top of the
canister purge assembly.



 Joe R


 

[78w72]

thats the one!! nice clean lookin eng bay by the way. now if we could zoom in on that sensor area so i can see where the vac lines route to, that would be great. 

i cant really tell in that pic where they go. a diagram or closer pic should do the trick.

you'd be a rich man if you started charging for your services!! 

[78w72]

just looked at a diagram you sent me earlier & i think i see where it goes....to the purge canister.

problem: i dont have my purge canister ,  it was missing when i got the car. is the canister important to how the car will run or is it just emission related. in other words is it really important to have (1) that sensor hooked up & (b) the canister hooked up correctly?

i hope the purge canister &/or sensor isn't the cause of what i feel is a poor running engine.

quick history, i bought this car 8 years ago from tucson az, drove it almost 2000 miles to iowa & it ran ok. when i got home in late fall (read cold weather) the car started acting up, running rough, choke sticking, etc etc. since then i put about 250 miles on it each season just puting it around town, never more than 1/4 throttle (under 2500-3000 rpms) all because of the rough running.
 i have recently found a couple vac leaks & fixed the stuck secondary plate, havent taken it out for a drive yet but when i start it it still seems to run kind of rough. obviously there are many other things that could be causing that (spark plugs dist cap etc) but they are all in close to average shape. i'll tackle those thing at a later date, right now i am mainly concerned with having all the sensors & do-hickies hooked up correctly. the car also just hit 30,000 miles & i did change the o2 sensor. (was a 25,000 mile car when i got it, documented on the title)

if the purge canister/sensor isnt that important to how the engine actually runs, then i will try the other obvious areas next.

thanks for for the help so far. 

[jjr]

> you'd be a rich man if you started charging for your services!!

   Wait!  what?  I can charge?  <grin>

   A lot of what I've posted was already stuff I taught myself for
 my own cars, just added the right pics.

   Maybe someday I'll put it all together and have Brett or somebody
 sell it for a few bucks... I dunno.

   When someone asks a specific question outside of what I've already
 done, I just try to snap a pic next time I'm at my shop. Sometimes
 I've gotta do a few minutes of research though, and that never
 hurts since I don't know everything.

   The canister was an EPA inspired piece. It was designed to collect
gas tank and fuel bowl gas vapors, store them and eventually allow them
to be drawn in to be burnt at warmed-up cruise speeds. As long as the
hoses that led to the carb are capped the engine wouldn't be effected.

   The down side is that gas tank and fuel bowl vapors are escaping to
the atmosphere. When it's all hooked up right, it has nearly no impact
on performance.

   I'll try to get the right pic for ya...

   Joe R

[jjr]

 Here's the pic that will settle your final question... (I hope <grin>)



 This machine is just starting it's journey...

 Joe R

[78w72]

thanks again for the info. i will leave that one unhooked (for now) untill i do the rebuild this winter.

i'll let you know if i run into any other issues. i'll get signed up for tac asap & send the rest of my turbo issues there.

thanks again joe.

scott