My Areomotive AFPR self adjusts...WHY?
- Thread starter goliath
- Start date
Vac line is on.
Both readings where at idle.
I'm not understanding why at would change on it's own?
Both readings where at idle.
I'm not understanding why at would change on it's own?
does your vac stay the same at both points? if the vac varies, that would explain it. if not, could be the fuel pump, or the valve inside the fpr is sticking. the higher the boost, the higher the fuel pressure, i.e. the further the valve moves. then it doesnt "reset" to where it was before.
check the fuel filter. otherwise, your fuel pump is either wearing out or its the wiring for the pump, or the gauge itself. feel the wires going into the tank. if they are hot, like too hot to hang onto, its altering the resistance for the worse. its requring more current to do the same job.
when the guage leaks out its glycol filling, the readings change. ive seen 4 faulty guages so far, which all leaked the glycol out.
when the guage leaks out its glycol filling, the readings change. ive seen 4 faulty guages so far, which all leaked the glycol out.
the fpr, pump and filter are all brand new.
I'll check the wiring to the filter.
The most boost I've run is 14psi
How do I check both points of the vac?
I'll check the wiring to the filter.
The most boost I've run is 14psi
How do I check both points of the vac?
goliath said:
that is your problem. vac @ idle can vary based on load and actual idle RPM.
ALWAYS check fuel press w/vac line OFF.
All of the above.
Oil filled gauges will change with temperature due to the pressure differential inside the gauge body. Many manufacturers and resellers note this on their website.
Vacuum, actually, idle will change for lots of reasons, varying vacuum.
Oil filled gauges will change with temperature due to the pressure differential inside the gauge body. Many manufacturers and resellers note this on their website.
Vacuum, actually, idle will change for lots of reasons, varying vacuum.