Cruise Control Problems
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Cruise Control Problems
I recently purchased an 88 Bronco II Eddie Bauer and the cruise control is not working. I have traced both vacuum lines and there is a line that terminates on the fire wall and an open line that I would assume should be connected to the intake. However, I cannot find an open vacuum connection anywhere on the intake. Where is the vacuum connection for cruise control on this model Bronco II?
Thanks
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From: SoCal
If this is plumbed the same as my 87 Ranger 2.9 the servo is under the hood/drivers side with 3 1/2 inch hoses. The hose closest to the fender goes to the intake manifold at the top of the engine by the firewall. The hose closest to the engine goes thru the firewall to the vacuum dump valve on the brake arm. The 3rd very short hose connects port to port on the servo.
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I can see all three hoses and one hose does go to the firewall as you indicate, one hose connects port to port on the servo, but I do not see any open connection on the manifold for the hose that should act as the main vacuum hose for the system.
My vacuum tee at the end of the manifold near the firewall has four ports, one port goes to the brake servo, one port appears to route to the PCM and the other two ports are connected together via a jumper hose. I was wondering if possibly someone has placed a jumper hose where it should not be to "eliminate" a vacuum leak and inadvertantly used the connection designated for the speed control?
My vacuum tee at the end of the manifold near the firewall has four ports, one port goes to the brake servo, one port appears to route to the PCM and the other two ports are connected together via a jumper hose. I was wondering if possibly someone has placed a jumper hose where it should not be to "eliminate" a vacuum leak and inadvertantly used the connection designated for the speed control?
Last edited by THP; Oct 26, 2004 at 07:30 AM.
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Joined: Oct 2003
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From: SoCal
Not sure what you mean by PCM. Does this have a transmission or is it a slugomatic? On mine the port facing the firewall is for the cruise control. The port on top is capped, but if I had a slugomatic it would be for the trans vacuum module. The port facing forward is for the fuel pressure regulator. And of course theres the one for the brake booster. Hard to say from here but it sounds like you need to remove that jumper hose and cap one port & attach the cruise to the other.
