fuel pressure regulator and idle?
#1
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fuel pressure regulator and idle?
Its been going on for a while now and dont know what it could be. At idle target idle speed is met, sometimes at a stop light or just parked my idle increases Id say 150-200rpm. sometimes I rev it and it goes back to normal sometimes just stays. Now I have a fuel pressure gauge and at idle I get 50psi and normal cruise. When my idle problem begins pressure is at 59psi,this is even at a dead stop. Now my question is can the fuel pressure regulator going bad cause this?
Thanks
Jaime
Thanks
Jaime
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A fuel pressure regulator that is vaccuum referenced (VRFPR) the fuel pressure will be lower when there is high manifold vacuum, like when idling and cruising. When revving or when at WOT, the fuel pressure will rise as manifold vacuum decreases.
Sounds like your FPR is working fine. Try unplugguing the vacuum hose, the fuel pressure should rise from low 50's up to 60psi.
peace
Hog
Sounds like your FPR is working fine. Try unplugguing the vacuum hose, the fuel pressure should rise from low 50's up to 60psi.
peace
Hog
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A fuel pressure regulator that is vaccuum referenced (VRFPR) the fuel pressure will be lower when there is high manifold vacuum, like when idling and cruising. When revving or when at WOT, the fuel pressure will rise as manifold vacuum decreases.
Sounds like your FPR is working fine. Try unplugguing the vacuum hose, the fuel pressure should rise from low 50's up to 60psi.
peace
Hog
Sounds like your FPR is working fine. Try unplugguing the vacuum hose, the fuel pressure should rise from low 50's up to 60psi.
peace
Hog
Jaime
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