Ok so theres 2 vaccum lines comeing out of the fire wall, i need to know where the shortest one goes, it has a 90 degree fitting, I am also alittle lost as to where the vacuum line goes from the canister on my drivers side, i have a 91 RS, does that go to the little octogon beside the egr? I know this seems silly but this is killing me tryin to figure it out, it just doesnt seem like that line stretches to anything unless i have things more messed up then i thought, i went off of a diagram in a book, but it doesnt even show the canister or those two lines, i know where the longer one goes, i think -.- any help would be greatly apprechated =] THANKS in advanced

 

Oh if u could please explain it in the most dumbest terminology possible, give alittle more details then u might think is nessasary -.- not to great with car lingo, kinda anyway

 

http://chevythunder.com/1988-92%205....to%20trans.gif

this is a pic of the vac line routing diagram for your car. my car is tuned port injection and not tbi. any vac lines going IN to the firewall should be for hvac.

 

I have that in my book what i dont have, and u can prolly tell even better now how not good i am with the wordage, is below the canister, i need that line routing, explained or a diagram something, It has a T that comes off it, one of the lines i have routed beside the EGR, the other is pluged, (not by me) but there are 2 lines on the passenger side comeing out of the firewall one goes stright into the heater hoses, (im assumeing) the other one is super short and doesnt reach to much of anything.. Maybe this helps anyway off to work -.- hopefully i get back and have some usefull info =]]]

 

Bump!!!! HELP PLEASE!!

 

I will post pictures if it helps u guys help me out any, GIMMIE A SEC!

 

This is the line coming out of the firewall, I need to know where it goes






I need to know if this is right, one side is pluged off, should it be? and where does the other end go to, i have it connected to this!

 

I've looked around on the site, and in my books, i havent found anything thats HELPFUL to me, considering im not good with the way things are worded, as if i know it all, if anyone can explain things better i'd apprechate it, i'm tryin to get it back running again after haveing done just about everything u can do to rebuild a car, its been sitting in the garage for awhile now.

 

I'll go check for you right now about the line that is t'd off and runs down the drivers side... I'm not sure where that short one goes either tho, and I dont know what connects to the octagon shaped thing either... you are right about the long vac line attaching to the heater valve though. I'm having trouble putting the finishing touches on an engine swap, and i'm looking for a lot of the same answers as you.

Could you please explain to me how your heater hoses are connected... because I'm a little stumped on what goes where.

 

I can take some pics for you, i had several taken before i tore my engine all down, to help with putting it back togeather and taped things off and wrote on them to help as well but ive deleted alot of them after i thought! i was done but, apperently wasnt, those are mighty hard to explain considering theres a bunch over there, if u give me a sec i'll snap up a few pictures see if that helps!

 

Alright, the bottom of that T connects to a vacuum ball under the drivers side fender/bumper area... then one side connects to that octagon thing i'm assuming(based on how yours was hooked up, and the other side (the one you have plugged) attaches to this thing beside the charcoal canister.... on my car there is also a cable that attaches to the throttle bracket coming from there. I took a picture of it on my phone that i can upload if you need it

 

If you could post a couple pictures of your heater hoses and where they all go, that would be awesome... also, where does your vac line going to the egr valve come from... I cant find that anywhere... people on here say it goes to your egr solenoid, but i cant find that either

 

 

Hmm -.- mine doesnt have that! i wonder what that does -.- where does the other side go to though? =o

 

The one off to the right goes to the drivers side off of the exaust manifold, the one on top mid goes to the firewall, on the left side from the front of the car, the other one runs down the side to the bottom to a cooliant line, i hope this is what u where talkin about if not i will take more pics and explain more :P

 

opps i messd that up top mid goes to the cooliant line the bottem goes to the firewall -.-

 

It might have been removed on your car... is there an open slot in you throttle bracket, because there is a line running from that thing to the throttle bracket. I'll find out what it is tomorrow and let you know, maybe something for cruise control

 

I dont have cruise control maybe thats why :P I just really wanna know where that little line goes to lol gah ive been bending over backwards for DAYZZ now tryin to figure it out, it just doesnt make sense and cant go much of anywhere, everythings already pluged up over there! gah! someone without this problem go look :P help us please!!

 

where does your egr line go to?

 

pics of heater hoses helped alot, thanks... I think i'm gonna figure a way to clean up my engine bay though, that just looks too messy.

 

Yeah it is, its the plug wires makein it look so bad i was tryin to mess with timeing before i get to makeing it all pretty, i have a open air filter im gonna put back on it take that one off, although i did alot to get it! i just dont like it as much as i thought i would..

 

Take care though im gonna hop off for the night WORK in the mornin, need to get some rest. maybe when we come back on tomarrow we'll have some help come our way, and not a problem either if u need more pics or explanations just ask, i can take some better ones get the light more into bay

 

Bump X 1695

 

Theres a bracket off the back side of the manifold with 2 vacuum lines the shorter one from that goes to the egr, the longer one goes to the front of the TBI on the far left i wanna say

 

Its a bracket with a EGR sensor? on it i think thats what its called back passenger side let me know if u wanted a picture, BTW COULD ANYONE PLEASE TELL ME WHERE THAT ONE VACUUM line goes, on the passenger side of the firewall, with that 90degree fitting! PLEASE!! its aggervateing me

 

No answer yet on that short vacuum line?

Joe, on your heater hoses, which side of the heater core runs to the radiator, passenger side or drivers side?

 

Hey! explain that alittle better, lol -.- whats a heater core, and actually, where i work, a 91 maro came in and the guy let me fiddle around under the hood, im actually missing what goes there, it looks like a little canister, and it hooks 2 hoses togeather

 

I'm lost though, cause my car sputters out where it wont even get up and go even if i push the gas all the way down, It just stalls/backfires from the TBI i think, im not sure, but it doesnt sound like a normal backfire, and iknow for a fact, (im almost positive) its not the timeing, i just set it and tripple checked where it was at, and tightend it down towhere its NOT gonna budge, i can start it, pull it out, get out of the drive way, up my culdisack, and down the road maybe a couple hundred feet if that, and it does that, SOOO FRUSTRATEING i think it may be a pressure problem though, bleh, i need to get a pressure tester from a auto parts store, im afraid im gonna have to drop my tank again

 

I was thinkin it was cause of these vacuum lines, why it was doing that, but im just not so sure anymore, bleh -.-

 

One the passenger side firewall you can see where 2 hoses go in, one is an outlet and the other is an inlet... dont worry about it though, i'll figure it out.

Have you pulled your air cleaner off and hit the throttle and see what your throttle body is doing, it should be spraying in a nice cone shape and not sputtering out... I had the same problem... i added fresh gas and i was good to go, but my car sat for 5 or 6 years with the same old gas... i plan on adding some injector cleaner too though, cant hurt

 

check the condition of the pcv valve hose that connects to throttle body, it is the one that runs to your drivers side valve cover

 

Joefuss, that vacuum line could go to your fuel pressure regulator. It sounds like your issue with the way it's running maybe associated with the FPR. I have a TPI and it has a similar vacuum hookup on the FPR. Not sure where your FPR is located on a TBI though. If you have a book, check in it. I have a book and am going to look too.

 

scratch that, upon looking in my service manual, it appears the the FPR on a TBI motor is an internal part of the throttle body and not anywhere close to the vacuum line you show in the pics. There is a sensor mounted right there next to it though, have you looked to see if it goes there?