It is for vacuum storage. It keeps blower mode from switching to defrost when accelerating. The mode selection is vac controlled and will default to defrost when vac is lost or low. This stored vacuum keeps that from happening
The vacuum diagram for a 1998 Ford F150 is located in the service manual. It details how each vacuum line is routed, where the line is attached, and its function.
On the passenger side firewall, above the blower motor. There is a vacuum line attached to it that connects it to the top of the engine and an wires attached to it on the front.
f150 can a4 wheel drive wheel fit on a 2 wheel drive f150 both 6 bolt pattern
The delta pressure feed back egr sensor is located on the intake manifold. It is a metallic rectangular thingy with vacuum lines and a connector on it.
rear wheel drive or 4x4 capable
No , rear wheel drive or 4X4 capable
vacuum leaks
No , rear wheel or 4x4
( 6 ) per wheel
Follow the main vacuum coming from the intake manifold and it will right next to the vacuum check valve......
yes as long as its a five lug wheel
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