500EFI alarm
07-05-2018, 11:07 PM
#11
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iTrader: (9)
rpms when shifting into gear is ?
Rpms in N is ??
both engines doing the exact same thing here ? both showing the same rpms as well ?
Never stalls in N and you can throttle up and back down to idle rpm without it ever stalling in N using throttle only ?
stock OEM set up here ?
SCX drive or just gear lube bottles --- so something on the engine is not stock at all to warrrant an SCX drives if applicable . What the set up in detailed here.
How new is the IMCO drive bottles install ?
this happens on the water hose also ?
Stock ignition ?
whats the voltage readings when engines stalls ? and what is the voltage when you shift into gear ? what is voltage reading in N - still want to know what rpms are ?
Rpms in N is ??
both engines doing the exact same thing here ? both showing the same rpms as well ?
Never stalls in N and you can throttle up and back down to idle rpm without it ever stalling in N using throttle only ?
stock OEM set up here ?
SCX drive or just gear lube bottles --- so something on the engine is not stock at all to warrrant an SCX drives if applicable . What the set up in detailed here.
How new is the IMCO drive bottles install ?
this happens on the water hose also ?
Stock ignition ?
whats the voltage readings when engines stalls ? and what is the voltage when you shift into gear ? what is voltage reading in N - still want to know what rpms are ?
Last edited by BUP; 07-05-2018 at 11:25 PM.
07-06-2018, 06:58 AM
#12
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Location: Ballston Spa, New York
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rpms when shifting into gear is ?
Rpms in N is ??
both engines doing the exact same thing here ? both showing the same rpms as well ?
Never stalls in N and you can throttle up and back down to idle rpm without it ever stalling in N using throttle only ?
stock OEM set up here ?
SCX drive or just gear lube bottles --- so something on the engine is not stock at all to warrrant an SCX drives if applicable . What the set up in detailed here.
How new is the IMCO drive bottles install ?
this happens on the water hose also ?
Stock ignition ?
whats the voltage readings when engines stalls ? and what is the voltage when you shift into gear ? what is voltage reading in N - still want to know what rpms are ?
Rpms in N is ??
both engines doing the exact same thing here ? both showing the same rpms as well ?
Never stalls in N and you can throttle up and back down to idle rpm without it ever stalling in N using throttle only ?
stock OEM set up here ?
SCX drive or just gear lube bottles --- so something on the engine is not stock at all to warrrant an SCX drives if applicable . What the set up in detailed here.
How new is the IMCO drive bottles install ?
this happens on the water hose also ?
Stock ignition ?
whats the voltage readings when engines stalls ? and what is the voltage when you shift into gear ? what is voltage reading in N - still want to know what rpms are ?
07-06-2018, 07:05 AM
#13
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Join Date: Oct 2003
Location: Ballston Spa, New York
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rpms when shifting into gear is ?
Rpms in N is ??
both engines doing the exact same thing here ? both showing the same rpms as well ?
Never stalls in N and you can throttle up and back down to idle rpm without it ever stalling in N using throttle only ?
stock OEM set up here ?
SCX drive or just gear lube bottles --- so something on the engine is not stock at all to warrrant an SCX drives if applicable . What the set up in detailed here.
How new is the IMCO drive bottles install ?
this happens on the water hose also ?
Stock ignition ?
whats the voltage readings when engines stalls ? and what is the voltage when you shift into gear ? what is voltage reading in N - still want to know what rpms are ?
Rpms in N is ??
both engines doing the exact same thing here ? both showing the same rpms as well ?
Never stalls in N and you can throttle up and back down to idle rpm without it ever stalling in N using throttle only ?
stock OEM set up here ?
SCX drive or just gear lube bottles --- so something on the engine is not stock at all to warrrant an SCX drives if applicable . What the set up in detailed here.
How new is the IMCO drive bottles install ?
this happens on the water hose also ?
Stock ignition ?
whats the voltage readings when engines stalls ? and what is the voltage when you shift into gear ? what is voltage reading in N - still want to know what rpms are ?
Both engines show the same rpm and only having an issue with one motor.
Once I get passed the shift I have no issues throttling up or back down. Doesn't happen every time and only happens at idle.
non stock set up - 540's with Prochargers.
I've been running this motor set up with SCX drives for the past 3 seasons.
Havent run it on the hose as boats in the water.
Running MSD boxes.
Havent checked voltage yet - planning to look at it again today
07-06-2018, 08:21 AM
#14
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Sounds like bad ground somewhere...
07-06-2018, 10:22 AM
#15
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iTrader: (9)
rpms are 850 in neutral and 750 in gear.
Both engines show the same rpm and only having an issue with one motor.
Once I get passed the shift I have no issues throttling up or back down. Doesn't happen every time and only happens at idle.
non stock set up - 540's with Prochargers.
I've been running this motor set up with SCX drives for the past 3 seasons.
Havent run it on the hose as boats in the water.
Running MSD boxes.
Havent checked voltage yet - planning to look at it again today
Both engines show the same rpm and only having an issue with one motor.
Once I get passed the shift I have no issues throttling up or back down. Doesn't happen every time and only happens at idle.
non stock set up - 540's with Prochargers.
I've been running this motor set up with SCX drives for the past 3 seasons.
Havent run it on the hose as boats in the water.
Running MSD boxes.
Havent checked voltage yet - planning to look at it again today
is this an CARB or EFI set up ? Alot of info needs to be known to even come close for a fix.
07-07-2018, 07:18 AM
#16
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Looks like the issue is the throttle position sensor. Anyone know if this is a standard GM part that might be available at a local auto parts store?
07-07-2018, 12:11 PM
#19
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I really don't know (have notg replaced a Merc 500EFI tps) but it sure as heck looks like this:ACDelco 213-894 GM Original Equipment Throttle Position Sensor
ACDelco 213-894 GM Original Equipment Throttle Position Sensor
by ACDelco
Link: http://a.co/8tjywfj
07-07-2018, 12:12 PM
#20
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iTrader: (1)
