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Discussion Starter · #1 ·
I've been clearing codes, swapping parts from one car to another.
These 2.5L use a few Vacuum solenoids,
VRIS, Fuel Pressure, and say EGR, but no idea where it is.


This is it.
That oval cap comes off and moved to convert it from a VRIS (that needs to vent) to Fuel Pressure Solenoid.
I was having a run issue, only after warming up, and 90+ degrees outside.
The Fuel Pressure solenoid cuts vacuum to the fuel pressure regulator, thus increasing the fuel pressure, preventing vapor lock.
Just got a delivery of one, put it on, no more run issue. It varied from surge at freeway cruise to hard miss.
I originally left it off and just used a hose from vacuum to the FPR.
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