Another boring idle question

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Cloggy Saint
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Post Sun Jun 26, 2016 11:31 am

On start up from cold my M20b25 idles way too high, around the 1500rpm mark but when warmed up it settles to where it should be. My first suspect would be the blue temperature sender but I always thought that gave opposite symptoms.
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Speedtouch
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Post Sun Jun 26, 2016 4:11 pm

I would check the TPS is working as it should first.

http://www.e30zone.net/e30zonewiki/inde ... ion_Switch
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
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markus_74
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Post Sun Jun 26, 2016 4:49 pm

How about icv? It control the idle rpm.
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markus_74
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Post Sun Jun 26, 2016 5:39 pm

How about icv? It control the idle rpm.
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Speedtouch
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Post Sun Jun 26, 2016 7:36 pm

Yes, check that too. Clean it with carb/brake cleaner if necessary, and check the rubber vacuum hoses aren't perished.
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
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