Fuel Pressure Gauge Dropping to Zero
Thread Starter
Melting Slicks
Joined: Sep 2006
Posts: 2,728
Likes: 142
From: Iowa
Fuel Pressure Gauge Dropping to Zero
I have an aftermarket Autometer Cobalt (electric) fuel pressure gauge on my A&A boosted ZO6. This morning, I noticed the gauge suddenly drop to zero for several seconds until it picked back up again, going immediately to normal cruising fuel pressure around 50 or 60. It did this several times.
When it happened, the car ran perfectly fine. No stuttering, no hesitation, no change in throttle feel or exhaust note/pitch, or rpm change. I'm assuming the gauge is losing connection with the sending unit, but am obviously a bit concerned.
If the fuel pressure drops to zero for a few seconds, this is something you'd notice immediately right? I mean, the car would hesitate, buck, etc etc instantly with full loss of pressure.
What are your thoughts?
When it happened, the car ran perfectly fine. No stuttering, no hesitation, no change in throttle feel or exhaust note/pitch, or rpm change. I'm assuming the gauge is losing connection with the sending unit, but am obviously a bit concerned.
If the fuel pressure drops to zero for a few seconds, this is something you'd notice immediately right? I mean, the car would hesitate, buck, etc etc instantly with full loss of pressure.
What are your thoughts?
Thread Starter
Melting Slicks
Joined: Sep 2006
Posts: 2,728
Likes: 142
From: Iowa
Thanks guys.
Took the car out for lunch today and there was no funny business this time. I'll keep a close eye on it and will pull the gauge to check the wiring on the back, then inspect the cable, and then the pressure transducer. Will replace if necessary.
This is the gauge I'm using:
http://www.autometer.com/2-fuel-pres...se-cobalt.html
And this is the pressure transducer it uses:
http://www.autometer.com/100-psi-pre...ransducer.html
Any tips or advice on checking the above?
Took the car out for lunch today and there was no funny business this time. I'll keep a close eye on it and will pull the gauge to check the wiring on the back, then inspect the cable, and then the pressure transducer. Will replace if necessary.
This is the gauge I'm using:
http://www.autometer.com/2-fuel-pres...se-cobalt.html
And this is the pressure transducer it uses:
http://www.autometer.com/100-psi-pre...ransducer.html
Any tips or advice on checking the above?
Burning Brakes
Joined: Aug 2010
Posts: 1,051
Likes: 54
From: Raleigh NC
Ive never understood why so many people here run Fuel pressure and wideband gauges over wideband and oil pressure gauges. Its pretty easy to tell if you don't have fuel pressure most of the time with just the wideband if your tune has been on point up to when it starts reading lean/ stumbling.
