GT Oil Pressure Gauge Question - Ford Mustang Forum
 
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post #1 of 5 (permalink) Old 12-29-2012 Thread Starter
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GT Oil Pressure Gauge Question

As everyone knows, the stock GT oil pressure gauge is just an idiot light with a needle. I am curious if the oil pressure sending unit simply sees pressure and sends a constant signal to the gauge, with this having the needle sit in one position. Or, is it that the gauge is only capable of giving one constant position? If the gauge is actually capable of operating as a real gauge (even if it has no numbers to indicate the actual pressure) could we change the sending unit to a different model and make it work? Anyone done this?

PS : does anyone know the actual oil pressure operating range from idle to redline for the Coyote?


2012 GT premium 6r80 Kona Blue with Saddle interior : Magnacharged, 3.55s, BFG G-Force Super Sport A/S 255/45-18, GT500 axlebacks, Saleen grill, CS lower valance, SLP trunk panel, MRT adjustable head restraints, BOSS oil cooler, BOSS brakes lines, C-Max ceramics for street and SP Performance Street Plus pads for light track duty, NAPA 5.1 brake fluid, BMR springs, LCA relocation brackets, panhard bar, Steeda ProAction shocks and struts. GT500 strut mounts, other small mods. Daily Driver.
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post #2 of 5 (permalink) Old 12-30-2012
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Stock sensor and gauge are a dressed up warning light I don't think the gauge is calibrated to a variable resistance sender so even if you replaced it I don't think it would read correctly. I installed a gauge pod on the A Pillar and installed Auto Meter Oil Pressure, Water Temp and Oil Temp gauges. For the oil pressure I used brass fittings to create a Tee to allow the stock and new gauge to have a source tap. You have to keep the stock sender as the switch is read by the ECU and will go to limp mode without the signal.

Normal Oil Pressure range warmed up is 30 psi at Idle to 68 psi at 7000 rpm, above 2000 rpm the pressure varies from 50-65 depending on rpm. This is why Ford stopped giving us real working gauges, too many nuisance service calls when owners see the needle move up and down.
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post #3 of 5 (permalink) Old 12-30-2012
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I have a Ford racing oil pressure gauge on mine. When cold oil pressure can get up near 100 pounds. Once warmed up it runs around 20-25 pounds at idle and around 40-45 at cruise. Under more throttle it can go as high as 60-70 pounds. Regardless, more than enough pressure.

2011 GT. Grabber Blue. Procharged. 3:73 manual.Billit LCA's. Corsa Extremes. GT 500 wheels. Racemaster DR's. T-56 Tremec. Dynotech DS . Centerforce DF. American Racing headers/high flow cats 560 rwhp.Donny Walsh tuned

2012 Pony Package. Race Red.3:31 automatic.BBK longtubes and catted X.FRPP Sport axlebacks. BBK throttle body. Dynotech DS. Brembo wheels and tires. Strut tower brace. Airraid CAI. Bama tuned.
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post #4 of 5 (permalink) Old 12-30-2012
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Quote:
Originally Posted by randeez11 View Post
I have a Ford racing oil pressure gauge on mine. When cold oil pressure can get up near 100 pounds. Once warmed up it runs around 20-25 pounds at idle and around 40-45 at cruise. Under more throttle it can go as high as 60-70 pounds. Regardless, more than enough pressure.
^ What he said. I have the FRPP Oil pressure gauge as well. 25 at idle, 45-50 cruising.

-2011 GT , 6AT, ROUSH TVS 2300 Phase 3 Supercharger w/ CAI, 82mm Pully, 3.73 FRPP Gears, Bassani Longtubes, Bassani HiFlo Cats., Bassani Cat-Back Xhaust, Eibach Pro Suspension, J&M Panhard bar, BMR LCAs, BRENSPEED Tuned...(More in profile)
-1965 Fastback "A-Code" 2+2 , 289 4bbl Edlebrock Performance, Ravin Exhaust..
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post #5 of 5 (permalink) Old 12-30-2012
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They put a real one in the focus st
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