Fuel pump shuts off at low RPM
#1
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Fuel pump shuts off at low RPM
New to MS3X, here is the problem I have:
When trying to set the idle (tried with AFR from 11-15, on ID1000's) it sounds really good until I get to 850 RPM, then I can hear what I believe is the fuel pump relay, click, then instantly the engine dies. Its not like the idle is too low, and it stumbled to dead, but it is actually idling very steady, and if I go 1 RPM below 850, I hear the click and it dies.
This happens on both open and closed loop idle.
Any Ideas?
When trying to set the idle (tried with AFR from 11-15, on ID1000's) it sounds really good until I get to 850 RPM, then I can hear what I believe is the fuel pump relay, click, then instantly the engine dies. Its not like the idle is too low, and it stumbled to dead, but it is actually idling very steady, and if I go 1 RPM below 850, I hear the click and it dies.
This happens on both open and closed loop idle.
Any Ideas?
Last edited by ryansmoneypit; 12-01-2015 at 07:47 AM.
#2
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Just thrusting in the dark here but the ecu cuts the fuel pump if the engine isn't running (in case of accident). Perhaps your setting rpm for changing from "crank" to "run" is at 850rpm? Just a guess of where to start since no one else if jumping in. Check your cranking settings.
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Just thrusting in the dark here but the ecu cuts the fuel pump if the engine isn't running (in case of accident). Perhaps your setting rpm for changing from "crank" to "run" is at 850rpm? Just a guess of where to start since no one else if jumping in. Check your cranking settings.
#13
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I captured a tooth log, but without understanding what I am looking at or for, I am sure not going to start tuning ***** inside the ms. can someone help me decipher? this is a 32-2 wheel
One tooth log and one big LOG.
I accidentally ate my bridge last year and had a toothy log. Hurts.
[ATTACH]2015-12-02_18.49.55.msl wednesday night.msl[/ATTACH]
One tooth log and one big LOG.
I accidentally ate my bridge last year and had a toothy log. Hurts.
[ATTACH]2015-12-02_18.49.55.msl wednesday night.msl[/ATTACH]
#16
You need to do a composite lot, not just a tooth log.
But the last composite log you sent me showed the cam sensor dropping out as per the picture/description I gave you, and it reported lost sync reason 2. Will post picture here too.
The .msl log you just posted shows you lost sync EIGHT TIMES and each time was reason 2.
Still the same.
Previous pic I sent you, same issue then as you have now.
But the last composite log you sent me showed the cam sensor dropping out as per the picture/description I gave you, and it reported lost sync reason 2. Will post picture here too.
The .msl log you just posted shows you lost sync EIGHT TIMES and each time was reason 2.
Still the same.
Previous pic I sent you, same issue then as you have now.
#20
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When viewed with the composite log, using this 36-2 wheel, should I be seeing TWO long lines, representing the two missing teeth? I'm wondering if maybe the signal voltage is justadjusted too low?
I ask because I see 1 long one, 1 that is much shorter right next to it, then the bar.
I ask because I see 1 long one, 1 that is much shorter right next to it, then the bar.
Last edited by ryansmoneypit; 12-04-2015 at 11:49 AM.