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  1. #1
    flightdeck2
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    Default 85 check valve hose inputs

    Could anyone tell me the vacuum hose routing from the check vavle on the passenger side by the fuel rail ?I'm trying to repair the A/c from defroster vent issue.On mine the check valve has one input side,on mine it goes to the fuel regulator.The two outputs on the otherside of the check valve,one goes to the passenger compartment,probably to the dreaded vacuum programmer.The other goes to the Vacuum canister.
    Is this correct?Sorry I don't have a FSM.

  2. #2
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    Quote Originally Posted by flightdeck2 View Post
    On mine the check valve has one input side,on mine it goes to the fuel regulator.
    Doesn't really matter how it is hooked up but the input side of valve should be going to manifold vac , not the reg unless there is another T hooked up to get manifold vac into the line.How does your fuel reg get vac?
    TPI has 2 vac ports
    From memory
    One line goes to rear to check valve , then splits like you stated .
    The other should do fuel reg /AIR and EGR solenoid mounted on thermo housing bolt

  3. #3
    flightdeck2
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    I'll have to check on vac to the regulator.I didn't think that was correct the way it was setup.From reading I know the fuel regulator needs vacuum.

  4. #4
    flightdeck2
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    I was apply to find the vacuum diagram on the radiator shroud.The vacuum line from the intake plenum is going to the fuel reg and the second port feeds the checkvalve to the HVAC and cruise control.Vents and cruise now working properly.

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