Vac Leak
 

Ok...here's a question? My jeep has a vac leak somewhere around the
firewall. I've checked and looked all over the place but can't find
it....and to make things worse you can only hear it when your on the
highway (quits when you exit and stop to check lol)and let me tell
ya....its a loud one! Stranger yet is sometimes you can see smoke
rising from the dash lol. Anybody have an idea?

Brian
88 YJ
4.2 I6

Re: Vac Leak
 

Your heater control is vacuum. The line hooks up on the drivers side of
the control up under the dash I think.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Brian wrote:
>
> Ok...here's a question? My jeep has a vac leak somewhere around the
> firewall. I've checked and looked all over the place but can't find
> it....and to make things worse you can only hear it when your on the
> highway (quits when you exit and stop to check lol)and let me tell
> ya....its a loud one! Stranger yet is sometimes you can see smoke
> rising from the dash lol. Anybody have an idea?
>
> Brian
> 88 YJ
> 4.2 I6

Re: Vac Leak
 

Your heater control is vacuum. The line hooks up on the drivers side of
the control up under the dash I think.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Brian wrote:
>
> Ok...here's a question? My jeep has a vac leak somewhere around the
> firewall. I've checked and looked all over the place but can't find
> it....and to make things worse you can only hear it when your on the
> highway (quits when you exit and stop to check lol)and let me tell
> ya....its a loud one! Stranger yet is sometimes you can see smoke
> rising from the dash lol. Anybody have an idea?
>
> Brian
> 88 YJ
> 4.2 I6

Re: Vac Leak
 

Your heater control is vacuum. The line hooks up on the drivers side of
the control up under the dash I think.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Brian wrote:
>
> Ok...here's a question? My jeep has a vac leak somewhere around the
> firewall. I've checked and looked all over the place but can't find
> it....and to make things worse you can only hear it when your on the
> highway (quits when you exit and stop to check lol)and let me tell
> ya....its a loud one! Stranger yet is sometimes you can see smoke
> rising from the dash lol. Anybody have an idea?
>
> Brian
> 88 YJ
> 4.2 I6

Re: Vac Leak
 

Your heater control is vacuum. The line hooks up on the drivers side of
the control up under the dash I think.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Brian wrote:
>
> Ok...here's a question? My jeep has a vac leak somewhere around the
> firewall. I've checked and looked all over the place but can't find
> it....and to make things worse you can only hear it when your on the
> highway (quits when you exit and stop to check lol)and let me tell
> ya....its a loud one! Stranger yet is sometimes you can see smoke
> rising from the dash lol. Anybody have an idea?
>
> Brian
> 88 YJ
> 4.2 I6

Re: Vac Leak
 

On Thu, 10 Jun 2004 13:39:39 UTC wranglerjeep1@aol.com (Brian) wrote:

> Ok...here's a question? My jeep has a vac leak somewhere around the
> firewall. I've checked and looked all over the place but can't find
> it....and to make things worse you can only hear it when your on the
> highway (quits when you exit and stop to check lol)and let me tell
> ya....its a loud one! Stranger yet is sometimes you can see smoke
> rising from the dash lol. Anybody have an idea?

If you have power brakes, check the vac. fitting and hose. That comes
straight off the manifold.

--
Will Honea

Re: Vac Leak
 

On Thu, 10 Jun 2004 13:39:39 UTC wranglerjeep1@aol.com (Brian) wrote:

> Ok...here's a question? My jeep has a vac leak somewhere around the
> firewall. I've checked and looked all over the place but can't find
> it....and to make things worse you can only hear it when your on the
> highway (quits when you exit and stop to check lol)and let me tell
> ya....its a loud one! Stranger yet is sometimes you can see smoke
> rising from the dash lol. Anybody have an idea?

If you have power brakes, check the vac. fitting and hose. That comes
straight off the manifold.

--
Will Honea

Re: Vac Leak
 

On Thu, 10 Jun 2004 13:39:39 UTC wranglerjeep1@aol.com (Brian) wrote:

> Ok...here's a question? My jeep has a vac leak somewhere around the
> firewall. I've checked and looked all over the place but can't find
> it....and to make things worse you can only hear it when your on the
> highway (quits when you exit and stop to check lol)and let me tell
> ya....its a loud one! Stranger yet is sometimes you can see smoke
> rising from the dash lol. Anybody have an idea?

If you have power brakes, check the vac. fitting and hose. That comes
straight off the manifold.

--
Will Honea

Re: Vac Leak
 

On Thu, 10 Jun 2004 13:39:39 UTC wranglerjeep1@aol.com (Brian) wrote:

> Ok...here's a question? My jeep has a vac leak somewhere around the
> firewall. I've checked and looked all over the place but can't find
> it....and to make things worse you can only hear it when your on the
> highway (quits when you exit and stop to check lol)and let me tell
> ya....its a loud one! Stranger yet is sometimes you can see smoke
> rising from the dash lol. Anybody have an idea?

If you have power brakes, check the vac. fitting and hose. That comes
straight off the manifold.

--
Will Honea

Re: Vac Leak
 

Yeah thats happend to me before but this is on the engine side of the
firewall. Plus its hurting the performance of my engine big
time....sounds like the valves are opening late. It pops and sputters
for about a mile or two after I exit the highway and then clears up?
There are some vac switches behind the air cleaner? What are those
for?

Brian
88 YJ