So I'm working on this 2007 Town Car that's been converted to a stretched limo. It has an aftermarket heater valve solenoid source hose tied into the vacuum source hose that feeds the EGR solenoid. (exhaust gas recirculation), it's an emissions device. There are codes for the EGR valve in the PCM/ECU. The EGR valve is junk, but I don't want a repeat repair.
The "T" is very close to the EGR solenoid, like 2 inches away.
The question is, will this affect the operation of the EGR valve? I was thinking I should move the heater solenoid hose to an intake manifold source, away from the EGR valve.
I cannot think of a scenario that would make a lot of difference. The heater solenoid should not be able to use enough vacuum long enough to affect the EGR valve.
I don't think. Of course if there's a leak...