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Old 03-15-2009, 02:11 PM   #1
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Default car almost dies when i turn my lights on??

i just recently installed my MSpnp and i everything runs fine i think? well i took the car out for the first time at night and so im backking out of my drive way and turn the lights on and the car almost dies. it gets down to 100rpm

And this justt started happening after i installed the MS ecu.

anyone else have this happen to them? maybe i have to tune something?
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Old 03-15-2009, 02:56 PM   #2
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Yeah, you have to tune something indeed. The megasquirt. Have fun.
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Old 03-15-2009, 02:59 PM   #3
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ok so when it comes to all the ecu tuning stuff , i have no idea what this and that means so can i just take it to a tuner shop and have it thrown on a dyno, me lazy =)
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Old 03-15-2009, 03:07 PM   #4
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Sure. You can pay someone to do anything for you if you have enough money. Pay my airfare and housing accommodations plus $50/hr for tuning and I'll do it.
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Old 03-15-2009, 05:13 PM   #5
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Good luck, a lot of us are having this same problem and all the "tuning" we have done hasn't solved it. I (and a few others by the sounds of it) just turn the idle up a little bit so that it is on the high side when all accessories are off, but droops to a normal level when they are on.

If you find a better solution please let me know what it is.
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Old 03-16-2009, 01:25 AM   #6
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Quote:
Originally Posted by wayne_curr View Post
Good luck, a lot of us are having this same problem and all the "tuning" we have done hasn't solved it. I (and a few others by the sounds of it) just turn the idle up a little bit so that it is on the high side when all accessories are off, but droops to a normal level when they are on.

If you find a better solution please let me know what it is.
I found it. PROPER tuning.
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Old 03-16-2009, 04:22 AM   #7
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Quote:
Originally Posted by johnhanson View Post
I found it. PROPER tuning.
Please enlighten me.
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Old 03-16-2009, 04:29 AM   #8
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he cant
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Old 03-16-2009, 10:06 PM   #9
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I've got the same problem on my 1.8L I don't mind idling at 1300 rpm most of the time..
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Old 03-16-2009, 10:16 PM   #10
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I've found that reducing the allowed minimum DC of the idle valve in Idle Settings can get the idle to drop down a little further. If you go too low you get idle droop issues, though. I'm still fiddling with the 99 motor idle; sometimes it's spot on, sometimes it's a little high.
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Old 03-17-2009, 12:41 PM   #11
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Another thing, you might want to try a little more advance at low RPM.
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Old 03-17-2009, 09:39 PM   #12
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I just noticed a similar problem to this with my car about 10 minutes ago. I was driving home from my friends house in the dark, while doing a datalog. I got the car home and I saved all my information, then I turned off my headlights. The AFR's changed. I have my MS wired in parallel using the factory wiring to the ECU to power the MS. Maybe I have some sort of grounding issue?
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