 MegaSquirt and fuel pump control..., another fuel pump thread. |
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| RJMII |
 Jul 8 2009, 04:50 PM
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Jim McIntosh  Group: Members Posts: 3,125 Joined: 11-September 07 From: Sandy, Utah Member No.: 8,112 Region Association: None  |
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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| ghuff |
Jul 8 2009, 04:52 PM
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This is certainly not what I expected down here. Group: Members Posts: 849 Joined: 21-May 09 From: Bodymore Murderland Member No.: 10,389 Region Association: MidAtlantic Region |
QUOTE(RJMII @ Jul 8 2009, 02:50 PM)  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? MS has a few settings for prime time and etc. Dig around in megatune (IMG:style_emoticons/default/smile.gif) What I did was I had a static fuel pump relay on my scirocco so that when terminal 15 was ctivated, it received power and ran consatnty with the ignition key on. I made my own relay and etc, bypassing the factory junk. That was #1, 2nd time I integrated it with the factory setup so it received signal when the hall sensor was signalling and turned on then and did not run with the motor off. Even though the injectors are closed, they could leak etc..... |
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| RJMII |
Jul 8 2009, 09:57 PM
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#3
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Jim McIntosh Group: Members Posts: 3,125 Joined: 11-September 07 From: Sandy, Utah Member No.: 8,112 Region Association: None |
QUOTE(ghuff @ Jul 8 2009, 04:52 PM) QUOTE(RJMII @ Jul 8 2009, 02:50 PM) 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? MS has a few settings for prime time and etc. Dig around in megatune (IMG:style_emoticons/default/smile.gif) What I did was I had a static fuel pump relay on my scirocco so that when terminal 15 was ctivated, it received power and ran consatnty with the ignition key on. I made my own relay and etc, bypassing the factory junk. That was #1, 2nd time I integrated it with the factory setup so it received signal when the hall sensor was signalling and turned on then and did not run with the motor off. Even though the injectors are closed, they could leak etc..... Gary, right! Mine is set up with an outside relay, and it is supposed to activate when the hall sensor/VR sensor starts showing that the engine is running. do you have MegaTune running on anything now? which area should I look? It's probably an obvious spot, but still not jumping out at me. kind of like looking for a pair of sunglasses that are on top of my head... I get used to them there and lose them. know what I mean? |
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Posts in this topic
RJMII MegaSquirt and fuel pump control... Jul 8 2009, 04:50 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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