Vacuum line question

[Douglas C.]

On my 69 L68 I am fine tuning all the vacuum lines, and one has me stumped.

Coming out of the firewall, and just behind the distributor VAC is a thin rubber vacuum line, about 6 " sticking out, probably about the diameter of a radio antenna. Can someone help here, I just can't see it in the AIM either.

I hope the answer dosen't make me look too dumb.

Thanks,

Doug

[Paul O.]

Re: Vacuum line question

Doug

I think you are looking at the vacuum feed hose for the heater astro-ventaltion and if installed A/C controls center console.

[Douglas C.]

Re: Vacuum line question

Doug

I think you are looking at the vacuum feed hose for the heater astro-ventaltion and if installed A/C controls center console.

Hi Paul. My car is a non-air, so where does it connect in the engine compartment? I'm stooped.

Tks. Doug

[Alan S.]

Re: Vacuum line question

Hi Doug,
I believe the hose connects to the vacuum supply hose for the wiper door.
On my 71, (no a/c), it uses an odd little plastic tee with a 1/8" nipple and a tiny spring clamp.
Th connection is near the right side hood latch but may be at another location along the firewall on your 68.
I hope you find it easly.
Regards,
Alan

[Douglas C.]

Re: Vacuum line question

Hi Doug,
I believe the hose connects to the vacuum supply hose for the wiper door.
On my 71, (no a/c), it uses an odd little plastic tee with a 1/8" nipple and a tiny spring clamp.
Th connection is near the right side hood latch but may be at another location along the firewall on your 68.
I hope you find it easly.
Regards,
Alan

Wow Alan, that bottom pic shows an odd T fitting, and I found this laying around. Looks like the small post will fit that small vacuum line coming out of the firewall near the distributor. So, I guess I need to see where that T fitting leads to, what it is hooked up to at it's 3 posts on my 69.

Thanks a lot.

[Paul O.]

Re: Vacuum line question

Doug

The connection point on a 69 is about where you are looking and is is different then a 71 you do not have the steel vacuum lines as does the 71. Also is you cars wiper door relay valve on the firewall or in the right fender that also has an affect of the connection point for the heater control hose.

[Douglas C.]

Re: Vacuum line question

Doug

The connection point on a 69 is about where you are looking and is is different then a 71 you do not have the steel vacuum lines as does the 71. Also is you cars wiper door relay valve on the firewall or in the right fender that also has an affect of the connection point for the heater control hose.

Hi Paul. My car is considered I think an early 69, built in Jan. 69. I will check in the right fender, as I noticed the other day the spot on the firewall on the driver's side does not have a relay, and I have seen this relay in engine compartment pictures. Is there more than one relay involved, maybe I'm missing a part and just not realizing it. Although, the wiper door does function correctly.

Tks. Doug

[Paul O.]

Re: Vacuum line question

Doug

In 1969 the relay had 2 locations first for early in the right fender area and then on the firewall ether is correct just depends when the car was built for the correct position. The move to the firewall occurred in an around March of 1969. If you have the relay in the fender then you would have rubbers hoses going clear across the car if on the firewall then they are very short due to the location.

[Michael D.]

Re: Vacuum line question

...In 1969 the relay had 2 locations first for early in the right fender area and then on the firewall...

Yep and two different spots on the firewall on top of that.

Does your wiper door open with the switch or with the over ride?

[Douglas C.]

Re: Vacuum line question

Doug

In 1969 the relay had 2 locations first for early in the right fender area and then on the firewall ether is correct just depends when the car was built for the correct position. The move to the firewall occurred in an around March of 1969. If you have the relay in the fender then you would have rubbers hoses going clear across the car if on the firewall then they are very short due to the location.

O/k Paul. So, early 69 and relay under right fender, that sounds like my car. Now, am I correct that the odd looking T fitting I mentioned should be connected to that thin vacuum line coming out of the firewall, and then the other T posts connected to the vacuum (yellow line) line by simply cutting that line and fitting the T between?

Ths. Doug

[John C.]

Re: Vacuum line question

Doug

The attached pictures show the hoses in the area in question. This is a Dec. 1968 built car so the hose configuration/routing should be the same as your car.

John

hose.jpghose1.jpghose2.jpg

[Douglas C.]

Re: Vacuum line question

Doug

The attached pictures show the hoses in the area in question. This is a Dec. 1968 built car so the hose configuration/routing should be the same as your car.

John

[ATTACH=CONFIG]40512[/ATTACH][ATTACH=CONFIG]40513[/ATTACH][ATTACH=CONFIG]40514[/ATTACH]

Wow John, that is exactly what I'm looking for, and it looks like the line that gets snipped to connect the T is the yellow lined line running accross from right fender relay to the left fender.

Now, in looking at the odd T fitting I have it is the opposite of post # 4 above, which looks like the correct T fitting I need. The T fitting I have has the about 1/8 " posts on the T sides and the single center post is about 1/4 " round. The center of it is a barrel shape, about a 1 / 2 " diameter and 1" long.

I do see where DocRebuild has the correct looking T fitting I need.

Does the T fitting I have sound like it belongs to another application / year car? It looks like an original (black plastic) piece, if it is something someone here can use I'll be glad to send it to them.

So, I do see that DocRebuild sells the correct T fitting, and I'll have to order that. I wonder

Thanks for the help, great information here from all.

Doug

[John C.]

Re: Vacuum line question

Doug

Yes, the tee is on the yellow line.

John