Hi
Just done my MS2 v3 wiring , and found that fuel pump keep runing when I switch on the ecu without start the engine .
I add a relay for the pump and trigger from pin 37 .
do I need to setting something 1st ? ( m using TunerStudio )
fuel pump is on when rpm is 0 ?
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
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Re: fuel pump is on when rpm is 0 ?
It should run for a few seconds then stop. This is to pressurize the fuel rail after a long stop. It should then start running again when MS gets a signal from the ignition that the engine is turning.4acrazy wrote:Hi
Just done my MS2 v3 wiring , and found that fuel pump keep runing when I switch on the ecu without start the engine .
I add a relay for the pump and trigger from pin 37 .
do I need to setting something 1st ? ( m using TunerStudio )
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Re: fuel pump is on when rpm is 0 ?
tested with stim again today ,
when rpm 0 the LED go off after 2sec
once I turn the rpm rotary swithc the LED go on
sound ok right .
but once I plug into my car engine hardness and turn on the ecu power the pump on all the way non stop ( never start engine , rpm 0 )
so recheck the wiring and relay all ok .
so tested withstim again found when ( rpm 0 LED off ) it was a 5v output at pin 37 , that why the pump relay was trigger from !
when turn the rpm rotary switch the LED on a 12v at pin 37 , ok this find right .
so my problem is why the pin 37 output a 5v when rpm 0 ?
or something wrong with my MS2V3 ?
when rpm 0 the LED go off after 2sec
once I turn the rpm rotary swithc the LED go on
sound ok right .
but once I plug into my car engine hardness and turn on the ecu power the pump on all the way non stop ( never start engine , rpm 0 )
so recheck the wiring and relay all ok .
so tested withstim again found when ( rpm 0 LED off ) it was a 5v output at pin 37 , that why the pump relay was trigger from !
when turn the rpm rotary switch the LED on a 12v at pin 37 , ok this find right .
so my problem is why the pin 37 output a 5v when rpm 0 ?
or something wrong with my MS2V3 ?
-
patrickbrown
- Helpful Squirter
- Posts: 48
- Joined: Sun Feb 15, 2009 4:42 pm
Re: fuel pump is on when rpm is 0 ?
I'm looking at the wiring diagram and it looks like pin 37 is actually a switched ground link. I don't believe you should see 5V there. The FP relay pin 36 (assuming Bosch/Tyco) is switched 12VDC and relay pin 85 should go to MS pin 37.
Someone correct me if I'm wrong.
Someone correct me if I'm wrong.
Patrick Brown
MS2-V3 (2.891) - EDIS8
62 Ford Falcon - 331 Stroker
MS2-V3 (2.891) - EDIS8
62 Ford Falcon - 331 Stroker
Re: fuel pump is on when rpm is 0 ?
sure it is -5v when ignition power on without fire up engine .
-12v wen engine fire up .
found that on pin 30 (IAC output for on/off valve only ) samething as pin 37 , when off -5v , on -12v
-12v wen engine fire up .
found that on pin 30 (IAC output for on/off valve only ) samething as pin 37 , when off -5v , on -12v
Re: fuel pump is on when rpm is 0 ?
Yup, previous post confirmed. All works fine with a dedicated relay just for FP. Just have to have the FP relay grounded through pin #37 while the FI and LC1 circuits go straight to ground, just like schematic.