madteg
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| posted on 19/5/16 at 05:19 PM |
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megasquirt hot start issue
When i start my car when ho,t it hunts badly till the wide-band has finished calibrating. As soon as wide-band reads the afr numbers car ticks over
lovely.
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mackei23b
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| posted on 19/5/16 at 05:27 PM |
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Hi there
Do you have closed loop on your lambda at idle?
Also check your MAT, what temperature are you showing as there may be heat soak happening which will lean your mixture.
Cheers
Ian
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r1_pete
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| posted on 19/5/16 at 05:35 PM |
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Also check your ASE Taper, or try a few seconds steady enrich before tapering off.
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SPYDER
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| posted on 19/5/16 at 06:37 PM |
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Does this happen if you restart your hot engine straightaway, or only if left a while before the restart?
My car was running lean on hot restarts as mentioned above. There is a table that can be used to apply a correction according to MAT reading to combat
heatsoak problems.
As mentioned above you might be better off not using EGO correction at tickover, if you are indeed using it .
Get onto the MS forums and checkout heatsoak restarts. You are not alone!
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madteg
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| posted on 19/5/16 at 07:37 PM |
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Pretty sure its heat soak as if i re start straight away its fine, leave for over 5 mins and it hunts. Will check on air manifold temp to see what is
happening tomorrow, thanks for putting me on the right path chaps. Kev
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mackei23b
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| posted on 20/5/16 at 09:05 AM |
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Have a look where your MAT sensor is as well.
Mine is in the air box but I still get some heat soak, I'm thinking about mouting it in the engine bay.
Cheers
Ian
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