Vacuum Line Diagram??
Thread Starter
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Junior User
Joined: Feb 2008
Posts: 67
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Vacuum Line Diagram??
Hello:
It been a few months since I posted...
I searched for Vacuum line Diagram, but did not find anything...
My 1988 Aerostar has a vacuum leak, I think it is coming from the Vacuum line going to the Auto Transmission..
(when engine is cold I lose the transmission for a few seconds then it is fine after that)
The van has a 1991 Ford Ranger 4.0 v6 in it..
I can sort of see the vacuum line, but things are so tight under that hood !!!!
So does anyone have a Vacuum Line Diagram
Thanks
It been a few months since I posted...
I searched for Vacuum line Diagram, but did not find anything...
My 1988 Aerostar has a vacuum leak, I think it is coming from the Vacuum line going to the Auto Transmission..
(when engine is cold I lose the transmission for a few seconds then it is fine after that)
The van has a 1991 Ford Ranger 4.0 v6 in it..
I can sort of see the vacuum line, but things are so tight under that hood !!!!
So does anyone have a Vacuum Line Diagram
Thanks
Posting Guru
Joined: Jul 2004
Posts: 2,416
Likes: 1
From: Mitchell, SD
I would first try removing the vacuum hose at the modulator (on the passenger side of the transmission) and see if tranny fluid is leaking out. The Vac Modulator is common failure item being so close to the cat.
If that is not the issue, there is a 'centeral hub' for the vac lines that have a couple capes that could have blown off. Normally it is located on the right side of the engine. But sense your Aero has a different engine, there is no telling where they could have re-located it. I would suggest crawling underneath with a bright light and see if you can trace where some of them go to locate that hub.
If that is not the issue, there is a 'centeral hub' for the vac lines that have a couple capes that could have blown off. Normally it is located on the right side of the engine. But sense your Aero has a different engine, there is no telling where they could have re-located it. I would suggest crawling underneath with a bright light and see if you can trace where some of them go to locate that hub.
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
also pull doghouse cover, aka hump cover
many 4L's have the vac. tree toward the back of the driver side valve cover. part of PCV.
the 88 may/may not have a Fuel Vapor Evac system under the air cleaner that operates off the vac. line system.
also should be a vac. line to cruise control and pwr brake if equiped.
21 year old vac lines must be as brittle as glass.
register with Autozone.com, they have lots of troubleshooting info online.
many 4L's have the vac. tree toward the back of the driver side valve cover. part of PCV.
the 88 may/may not have a Fuel Vapor Evac system under the air cleaner that operates off the vac. line system.
also should be a vac. line to cruise control and pwr brake if equiped.
21 year old vac lines must be as brittle as glass.
register with Autozone.com, they have lots of troubleshooting info online.
Thread Starter
|
Junior User
Joined: Feb 2008
Posts: 67
Likes: 0
I would first try removing the vacuum hose at the modulator (on the passenger side of the transmission) and see if tranny fluid is leaking out. The Vac Modulator is common failure item being so close to the cat.
If that is not the issue, there is a 'centeral hub' for the vac lines that have a couple capes that could have blown off. Normally it is located on the right side of the engine. But sense your Aero has a different engine, there is no telling where they could have re-located it. I would suggest crawling underneath with a bright light and see if you can trace where some of them go to locate that hub.
If that is not the issue, there is a 'centeral hub' for the vac lines that have a couple capes that could have blown off. Normally it is located on the right side of the engine. But sense your Aero has a different engine, there is no telling where they could have re-located it. I would suggest crawling underneath with a bright light and see if you can trace where some of them go to locate that hub.
Thanks
Thread Starter
|
Junior User
Joined: Feb 2008
Posts: 67
Likes: 0
also pull doghouse cover, aka hump cover
many 4L's have the vac. tree toward the back of the driver side valve cover. part of PCV.
the 88 may/may not have a Fuel Vapor Evac system under the air cleaner that operates off the vac. line system.
also should be a vac. line to cruise control and pwr brake if equiped.
21 year old vac lines must be as brittle as glass.
register with Autozone.com, they have lots of troubleshooting info online.
many 4L's have the vac. tree toward the back of the driver side valve cover. part of PCV.
the 88 may/may not have a Fuel Vapor Evac system under the air cleaner that operates off the vac. line system.
also should be a vac. line to cruise control and pwr brake if equiped.
21 year old vac lines must be as brittle as glass.
register with Autozone.com, they have lots of troubleshooting info online.
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