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> MegaSquirt and fuel pump control..., another fuel pump thread.
RJMII
post Jul 8 2009, 04:50 PM
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Jim McIntosh
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Do any of you MegaSquirt users know of settings in MS that control the fuel pump?

It seems as if my fuel pump doesn't come on when it should.

(the wiring is correct, I KNOW it isn't wiring, the board doesn't have any boviously visible trace issues, we have checked continuity through the whole system and it is either hardware issue or software)


direct question:

which settings for the MS will cause fuel pump issues?
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RJMII
post Jul 9 2009, 03:21 PM
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Jim McIntosh
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http://www.kilowattclassroom.com/Archive/AN0007.pdf


and a link I found for testing transistors...

I will check my transistor and get back to you.
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RJMII   MegaSquirt and fuel pump control...   Jul 8 2009, 04:50 PM
ghuff   Do any of you MegaSquirt users know of settings i...   Jul 8 2009, 04:52 PM
RJMII   Do any of you MegaSquirt users know of settings ...   Jul 8 2009, 09:57 PM
underthetire   [quote name='ghuff' post='1189748' date='Jul 8 20...   Jul 8 2009, 10:07 PM
underthetire   I know there is a time function when you turn the ...   Jul 8 2009, 05:01 PM
RJMII   YES! That is the setting that I screwed with a...   Jul 8 2009, 09:55 PM
underthetire   I think it was on the initial set up. I don't ...   Jul 8 2009, 11:19 PM
ghuff   Yeah I understand and honestly the megatune interf...   Jul 9 2009, 12:12 AM
RonW   i agree that megatune is "kludgy". have...   Jul 9 2009, 12:53 AM
RJMII   i agree that megatune is "kludgy". hav...   Jul 9 2009, 09:12 AM
mightyohm   So the fuel pump NEVER turns on? If so, then it...   Jul 9 2009, 03:07 AM
aircooledtechguy   Bad Relay?? Mine that came with my relay board ar...   Jul 9 2009, 09:37 AM
RJMII   all external Relays are fine. I can ground the rel...   Jul 9 2009, 10:52 AM
ghuff   Do yourself a favor and bypass the MS circuit enti...   Jul 9 2009, 11:48 AM
RJMII   Do yourself a favor and bypass the MS circuit ent...   Jul 9 2009, 12:17 PM
mightyohm   It definitely sounds to me like the MS is not swit...   Jul 9 2009, 01:17 PM
RJMII   No relay board, the MS fuel pump wire is wired to ...   Jul 9 2009, 01:43 PM
mightyohm   Yeah, but I need to know what Megasquirt version y...   Jul 9 2009, 01:51 PM
RJMII   version 3   Jul 9 2009, 02:33 PM
mightyohm   The fuel pump driver transistor is Q2, it should b...   Jul 9 2009, 02:56 PM
RJMII   Thank you for the diagram. other than the fuel p...   Jul 9 2009, 03:05 PM
RJMII   I found this. In case anyone else is looking and c...   Jul 9 2009, 03:15 PM
RJMII   http://www.kilowattclassroom.com/Archive/AN0007.pd...   Jul 9 2009, 03:21 PM


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