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Old 09-29-2009, 12:12 PM   #1
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Default Running on 2 cyl under 40F COPS

Okay I searched and some other members are having this same problem. The car fires right up and runs on 2 cylinders. anytime its under 40F outside. once it warms up it runs perfect again. if its 45F outside no problems. what makes it not spark under 40F no one else's thread had a solution? It never did this before the COPS conversion.?
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Old 09-29-2009, 12:14 PM   #2
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are you sure it's running on 2, or just running like ****?
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Old 09-29-2009, 04:54 PM   #3
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I'm sure its running on 2, its full lean and pure gas is pouring out the exhaust. I don't get it? being 45F is 100% different
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Old 09-29-2009, 04:58 PM   #4
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your cold start settings tuned good?
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Old 09-29-2009, 05:00 PM   #5
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fouling plugs?
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Old 09-29-2009, 05:05 PM   #6
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i think the cold settings are tuned good it fires up good, just runs like poop and if its fouling plugs by starting then this sucks... I saw a thread a while ago about someone making a switch for COPS in the cold I dont remember what it was but I couldnt find it in search
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Old 09-29-2009, 05:05 PM   #7
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post a log.
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Old 09-29-2009, 05:11 PM   #8
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Well tomorrow its supposed to be below 40 again in the morning so ill try then, but I wanna figure it out before winter is in full force
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Old 09-29-2009, 05:25 PM   #9
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I'm gonna bet on fouling plugs. What are your cranking settings? I foul plugs and start on 2 cyls atleast once every 2 weeks, could be more often than that. Started happening with my 550s. Since doing Joe's spark out mod, its better, but not 100% solved.

Keep in mind that fuel atomizes better in cold weather as well. This could also be what is leading to your fouled plugs.
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Old 09-29-2009, 05:28 PM   #10
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yea Im building up the courage to do joes mod still... but good to know it helped but still someone made a switch/box last year that he said made cold start with cops flawless but I cant find the thread?
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Old 09-29-2009, 06:20 PM   #11
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jeez i replaced my plugs once in the last like 2-3 years.
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Old 09-29-2009, 06:21 PM   #12
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I run adaptronic....my car runs on 4 cylinders.
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Old 09-30-2009, 06:27 PM   #13
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I have find out that the problem was the coils. Perhaps b/c of the different dwell, if one of the coils does not fire (which means two of them are not firing since it's not a true sequential COP). The cold somehow effect the ignitor in the toyota COP. I dropped in some new coils and that fixed the problem.
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