Anyone know what this EFI part does?

[jazzbass]

Anyone know what exactly this line is for?


This runs from the intake section between the air flow meter and the throttle body to a line behind the left intake manifold. The parts diagram from Pelican:


While doing spring maintenance I went in to remove some sound padding that had disintegrated. When I removed the heat blower motor, I found this:

A nice big crack in the rubber part of the line. This line seems to be a breather or vacuum line of some sort, so I think grinding off the crimped section and clamping a new rubber hose on will be fine. Just want to make sure, though.

I will say that this worries me quite a bit about the condition of my 19 year old rubber fuel lines. I checked them and did see any breaks (or smell gas), but I'm still concerned.

[ChrisBennet]

Yes, just replace that part with some rubber hose. See Hunting down Motronic vacume leaks: What does the thermo-switch do? for examples of just this thing.
-Chris

[dwightp]

I believe that particular piece is to support the brake vacuum assist system.

[jazzbass]

Thanks guys. I'm going to grind off the old fitting, get some vacuum line and clamp it back together.