Vacumn line-?? where ?---HELP!!

[Twinpilot001]

On my 1988 olds cutlas supreme FWD- 2.8 engine- im almost done !!-yet help is needed!!- On the throttle body (top) there is a rubber vacumn line connector- it has 4 lines- 1989 has 3 lines- what i cant find is where the HVAC/ cruse labled = line goes to ?? diagram says =Hvac/cruse- diagram does not tell where it goes to -appears maybe thru firewall>???> yet I cannot find -where it goes to ? Where does this plastic line hook to?? The crusie controll on drivers side engine compartment has 2 lines on it going to -INSIDE the car. This line i cant find goes from the throttle body to --????????? where??& its labled hvac / cruise on all diagrams for 1988 & 89 same line - yet shown not where it goes to.!! Help as im lost in space!! I have noticed when im ideling the car ( not driving as yet) the heater also does not work!--No differences between defrost & floor heater?? therefore im assuming the line im searching for somehow connects -- somewhere for that also . Any help is needed Thanx!!!!!!!

Edited October 20, 2014 by Twinpilot001

[Twinpilot001]

Someone knows where this line goes from engine compartment into the inside car area!!!!!!!!! HELP!!!!!!!!!!!!!line comes off Throttle body connector (top throttle body) & goes to where??????? Has to be in engine compartment -somewhere--- to get thru firewall area?

[mfewtrail]

This might help(you'll need to ignore parts of it as it's specifically for a 1990 3.1 turbo, but most of it is the same).

 

[Twinpilot001]

Thats all I needed-Go out & buy a lottery ticket!! Hope u win!!!!!!!!!!!! U deserve it!!!!!!!!!!! Thanx!!

[Twinpilot001]

UPDATE!! Today got the car running - have all vacumn lines hooked up =EXCEPT!! 1 heres my deliema!!- the line from the intake (rubber 4 hole vacumn thingy) - diagram says HVAC/ Cruise- for the life of me & my small Hands wife!! & flasklights / mirrors ect.= we cannot locate where this line from the intake hooks to?? Diagrams show it like going into firewall?? yet i find the cruise vacumn actuator on drivers side fender area is hooked up & lines all going into the car in electrical bundle feed thru area! This line has to have some external line that it goes to ?? HELP!! remember -i have a olds cutlass FWD 1988 2.8 model. 88 & 89 seemingly are the same-except ! 89 has a 3 port rubber vacumn/ throttle =intake lines on it !same diagram mostly =-i just cant locate any line anywhere that SHOULD hook to the intake line.!

[mfewtrail]

I'll try to get some pictures for you tomorrow if I can.

[mfewtrail]

Does this help any? It's an actual picture of the check valve area on the car.

 

 

 

In the photo, the hvac line to the intake/throttle body line is the one that is on the other side of the check valve from where I'm holding it(straight underneath the blue connector).

[Twinpilot001]

Thanx to all - car still not good- I cant seem to get it to start when cold- cranks long time =tries to start--yet i floor the accl-pedal still no start - seems to want to backfire- not badly once / twice- yet have checked fuel pressure -good 40+ psi, spark excellent too-compression great! When i (while running -before) induced carb cleaner spray - finding only 1 area under intale plenum=that engine will smoothe & run better. yet i know the intake gasket is new & good.Maybe a cracked line that goes fron top intake rubber feed to fuel rail vacumn & then "T's" to map sensor is bad or leaking?? Just cant seem to figure why engine before ran @ idle for over (3 times) 1+ hour each. now wont run? I still have not tried to test drive the car. long ago- when i did drive it -would die -then non run - towed back to house(close by) i believed that was due to TPS being bad!! replaced that & adjusted values. I did have the crank sensor replaced when all the non-start & dieing on road 1st became a problem.It was bad. Car ran very good after that except @ 65 mph - it was like someone turned the key off- let up on accl- ran good again. Thats when i discovered the TPS was bad & replaced. I havent been able to get this car driveable again!! it has no cam sensor is obd 1 - & is 88 olds cutlass= fwd-2.8 engine-- multi port fi. I did have a map that leaked vac & replaced that. Cleaned idle air sol too. only code todate i can usually get is code 34 map low. Im bald & still pulling my hair!!

[Twinpilot001]

in the pix u sent= where u r thumb is ? where does that line go to??also=where does the line coming off the "T" go to ( one to right of thumb)? If i am understanding you correctly????? The line that is straight / from thumb area- just past the ?? one way check valve? -- going under the blue electrical connector?? = is the one going up to the main line to the intake connector / for HVAC? its also the largest diameter line (like 1/4 '?)