Comanche Throttle Body vacuum question
07-04-2012, 01:37 AM
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Model: Cherokee
Comanche Throttle Body vacuum question
89 Comanche, 4.0 I6 There is a grommet on the valve cover side of the throttle body. It has a grommet with two holes in it. The bottom hole has a vacuum line that goes to the firewall to a component. The upper hole is open. Am I missing a line somewhere? Is there supposed to be a line applying vacuum there? Should I block it off? I ask this because there is no vacuum on that hole.... Any help would be appreciated!
07-04-2012, 04:40 AM
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Year: 89XJ,98ZJ,72K10, 06 Tundra..
Model: Cherokee
Engine: 4.0
That upper hole is really more like a plug to hold the whole grommet into the TB. Only has one hose going to your MAP on the firewall.
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