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496 HO Scan results

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Old 02-17-2009, 01:19 PM
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Default 496 HO Scan results

Hey computer experts...Just bought the Diacom software and ran it on a 496 Mag HO. The engine runs fine and no problems, just in for oil change and water pump impeller. The customer admitted stuffing it in the sand. There are a few codes that I'd like you guys that have been doing this longer than me give comments on. Here are some results:

[QUOTE] 1 LOW OIL PSI STR
--------------------------------------------------------------------
FF Baro Pressure 14.25 PSI
FF Battery Volts 12.71 VDC
FF Sea Pump Pressure 1.59 PSI
FF Boat Speed 0.00 #
FF Manifold Air Temp 80.60 °F
FF Coolant Temp 78.80 °F
FF Demand 0.00 %
FF Engine Speed 807 RPM
FF Engine State Running
FF FPC Total 35.1 Counts
FF Frequency Count 1
FF Fuel Level 0.00 %
FF Gear Position In Gear
FF Lake Temp 431.60 °F
FF Engine Load 9.62 %
FF Main Pwr Relay Requests 33812.0
FF Manifold Air Pressure 9.23 PSI
FF Oil Level 0.00 %
FF Port Tab Pos 0.03 %
FF Available Power 1 %
FF Run Time 187.17 hrs
FF Starboard Tab Pos 0.00 %
FF TPS Percent 0.00 %
FF Trim Position 29.83 %


4 GUARDIAN
--------------------------------------------------------------------
FF Baro Pressure 14.25 PSI
FF Battery Volts 10.52 VDC
FF Sea Pump Pressure 1.06 PSI
FF Boat Speed 0.00 #
FF Manifold Air Temp 80.60 °F
FF Coolant Temp 78.80 °F
FF Demand 0.00 %
FF Engine Speed 723 RPM
FF Engine State Crank
FF FPC Total 0.0 Counts
FF Frequency Count 5
FF Fuel Level 0.00 %
FF Gear Position In Gear
FF Lake Temp 431.60 °F
FF Engine Load 0.00 %
FF Main Pwr Relay Requests 33812.0
FF Manifold Air Pressure 12.70 PSI
FF Oil Level 0.00 %
FF Port Tab Pos 0.28 %
FF Available Power 0 %
FF Run Time 187.17 hrs
FF Starboard Tab Pos 0.00 %
FF TPS Percent 0.00 %
FF Trim Position 29.83 %

6 OVERSPEED
--------------------------------------------------------------------
FF Baro Pressure 14.25 PSI
FF Battery Volts 13.25 VDC
FF Sea Pump Pressure 3.86 PSI
FF Boat Speed 0.00 #
FF Manifold Air Temp 80.60 °F
FF Coolant Temp 78.80 °F
FF Demand 0.00 %
FF Engine Speed 733 RPM
FF Engine State Running
FF FPC Total 36.2 Counts
FF Frequency Count 531
FF Fuel Level 0.00 %
FF Gear Position In Gear
FF Lake Temp 431.60 °F
FF Engine Load 10.36 %
FF Main Pwr Relay Requests 33812.0
FF Manifold Air Pressure 9.56 PSI
FF Oil Level 0.00 %
FF Port Tab Pos 0.06 %
FF Available Power 100 %
FF Run Time 187.17 hrs
FF Starboard Tab Pos 0.00 %
FF TPS Percent 0.00 %
FF Trim Position 30.00 %


9 CAM SNSR
--------------------------------------------------------------------
FF Baro Pressure 14.41 PSI
FF Battery Volts 12.81 VDC
FF Sea Pump Pressure 36.51 PSI
FF Boat Speed 1.00 #
FF Manifold Air Temp 28.40 °F
FF Coolant Temp 24.80 °F
FF Demand 18.73 %
FF Engine Speed 425 RPM
FF Engine State Running
FF FPC Total 84.4 Counts
FF Frequency Count 6
FF Fuel Level 0.00 %
FF Gear Position In Gear
FF Lake Temp 431.60 °F
FF Engine Load 27.45 %
FF Main Pwr Relay Requests 33812.0
FF Manifold Air Pressure 14.84 PSI
FF Oil Level 0.00 %
FF Port Tab Pos 0.18 %
FF Available Power 100 %
FF Run Time 192.73 hrs
FF Starboard Tab Pos 0.00 %
FF TPS Percent 18.73 %
FF Trim Position 40.80 %
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Old 02-17-2009, 01:24 PM
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Current hours on the boat are 192.9 hours so the cam sensor code was thrown while running on gardan hose. The overspeed code and the frequency of 531 times has me curious. What could that be?
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Old 02-17-2009, 01:54 PM
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Here are a few of my codes that Dustin explained to me when I got my boat. Turned out to be a water pump impeller. One of them was the overspeed.

160 is the port side exhaust manifold sensor. Either it broke during removal/installation of new exhaust, is unplugged completely, it has failed or it got too hot.

179 is the engine coolant temp. Did the motor go over 180deg f? If so, this will set, which would also set the exhaust manifold code as well. Either it got over 180 (I think its near 195deg F to set), or sensor is bad, or its a wiring/installation problem.

19 overspeed code happens whenever guardian activates and your rpm is higher than the targeted rpm. So while it brings your rpm down, your rpm is over the targeted rpm, setting the overspeed code.

77 is probably from the motor missing during guardian, this pops up sometimes when guardian misfires cylinders.

Check your temperature, you might want to verify that your gauges are coming from the computer vs. a seperate sensor. Should be from computer on late model 496's, but you never know. Therefore your gauge may read different than your computer. You can buy a scanner from www.rinda.com. If your always away from service center, might be a good idea to have one handy.

Dustin
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