Fuel Pump Wont Stop!
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- Super MS/Extra'er
- Posts: 17507
- Joined: Thu Apr 16, 2009 8:08 pm
Re: Fuel Pump Wont Stop!
Something is causing the processor to command the fuel pump to switch on while on the car but not on the Stim. The most likely cause is something that the MS1 interprets as an RPM signal.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Re: Fuel Pump Wont Stop!
Do you get anything odd on the Tuner Studio dash between the MS1 and the MS2 when the pump is running with the engine stopped?
Rover SD1 3.5 EFI
MS2 V3
EDIS
Tech Edge O2
London UK.
MS2 V3
EDIS
Tech Edge O2
London UK.
Re: Fuel Pump Wont Stop!
The only thing weird I saw was one bar stating the engine Knocked and the pulse width gauge would go from zero to about three point something milliseconds every few seconds.DaveEFI wrote:Do you get anything odd on the Tuner Studio dash between the MS1 and the MS2 when the pump is running with the engine stopped?
MS1 V. 3.0 Not assigned to a motor
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
Re: Fuel Pump Wont Stop!
The tachometer was at a steady zero by the way so it isn't seeing rpm to have the pump come on.
MS1 V. 3.0 Not assigned to a motor
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
Re: Fuel Pump Wont Stop!
I did try something though, I unplugged the power wire for the coil pack and EDIS.... Then the pump functioned as it should by priming and then shut off. So is there a difference in the pin out from a MS1 to a MS2 I'm not catching? Weird, it works fine with the MS2 but not the MS1...
MS1 V. 3.0 Not assigned to a motor
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
Re: Fuel Pump Wont Stop!
Looking at your sig, your MS2 have V3.57 PCBs. These use a different design of pump relay driver to the V3 PCB. Not sure if this has any bearing, though.Corysvdub wrote:I did try something though, I unplugged the power wire for the coil pack and EDIS.... Then the pump functioned as it should by priming and then shut off. So is there a difference in the pin out from a MS1 to a MS2 I'm not catching? Weird, it works fine with the MS2 but not the MS1...
Rover SD1 3.5 EFI
MS2 V3
EDIS
Tech Edge O2
London UK.
MS2 V3
EDIS
Tech Edge O2
London UK.
-
- Super MS/Extra'er
- Posts: 17507
- Joined: Thu Apr 16, 2009 8:08 pm
Re: Fuel Pump Wont Stop!
What happens if you put the MS2 processor on the MS1 board?Corysvdub wrote:I did try something though, I unplugged the power wire for the coil pack and EDIS.... Then the pump functioned as it should by priming and then shut off. So is there a difference in the pin out from a MS1 to a MS2 I'm not catching? Weird, it works fine with the MS2 but not the MS1...
How exactly is the MS1 board set up for tach input?
It looks like there's just enough noise pulses getting through to make the fuel pump turn on.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Re: Fuel Pump Wont Stop!
I have it set up per the manual with the relay board
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MS1 V. 3.0 Not assigned to a motor
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
Re: Fuel Pump Wont Stop!
Those are the instructions for using EDIS with B&G code. Extra code modifies the opto input in a different way.
Rover SD1 3.5 EFI
MS2 V3
EDIS
Tech Edge O2
London UK.
MS2 V3
EDIS
Tech Edge O2
London UK.
Re: Fuel Pump Wont Stop!
Okay so where would I be looking to find this info?DaveEFI wrote:Those are the instructions for using EDIS with B&G code. Extra code modifies the opto input in a different way.
MS1 V. 3.0 Not assigned to a motor
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
Re: Fuel Pump Wont Stop!
Is this it?
You do not have the required permissions to view the files attached to this post.
MS1 V. 3.0 Not assigned to a motor
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
Re: Fuel Pump Wont Stop!
Yes? No?... Nobody?... Thanks
MS1 V. 3.0 Not assigned to a motor
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
MS2 V. 3.57 Subaru Powered Squareback
Microsquirt Startup Stand W/ turbo EJ25
MS3X Subaru EZ30D Finished!
Re: Fuel Pump Wont Stop!
Yes - those are the mods for using the opto input with EDIS and a V3 board and Extra Code.
Rover SD1 3.5 EFI
MS2 V3
EDIS
Tech Edge O2
London UK.
MS2 V3
EDIS
Tech Edge O2
London UK.