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Connecting the vacuum line to allow the four wheel drive to kick in on a 1988 S15?
Wiki User
∙ 14y ago
At one point while offroad I had the vaccuum lines for the four wheel drive fail. If you go to the intake manifold, there should be a few ports that are blocked off. With the vehicle running unblock and check for vacuum. If you have vacuum, you can connect an extra bit of vacuum line directly from the port to the actuator that engages the front right axle shaft. This effectively bypasses the vacuum switch on the transfer case.
Wiki User
∙ 14y ago
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