Engine starting fine when cold, but not at all when hot?

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billr
Super MS/Extra'er
Posts: 6828
Joined: Sun May 15, 2011 11:41 am
Location: Walnut Creek, Calif. USA

Re: Engine starting fine when cold, but not at all when hot?

Post by billr »

How about posting a current MSQ and MSL?
B1ack_Mi16
Helpful MS/Extra'er
Posts: 108
Joined: Mon Oct 19, 2015 7:04 am

Re: Engine starting fine when cold, but not at all when hot?

Post by B1ack_Mi16 »

I would need to make a new log after it start behaving like this, I've lost control over the older log files.

I will try to feed it +12v directly too in case there is some problems with power to the ECU.
B1ack_Mi16
Helpful MS/Extra'er
Posts: 108
Joined: Mon Oct 19, 2015 7:04 am

Re: Engine starting fine when cold, but not at all when hot?

Post by B1ack_Mi16 »

Problem "solved".

The MS 12v feed really drops below 5v sometimes during cranking on hot engine.
(I can not figure out why it does drop less when the engine is cold though, it's just very strange).

So I hard-wired it with an additional wire to the battery today and it started fine when hot too.

Good to have solved it, and I don't need to use the Hall-sensor I bought anyway. :)
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