Total shot in the dark here, as I don't have a block heater. Is it
possible that the block heater is sending some heat up (either via
convection or conduction) near the IAT and other sensors, making the
computer think the ambient temperature is higher than it is? This would
lean out the mixture and cause stumbling.
jay & dana wrote:
> For those of you that live in colder climates and use a block heater, I
> wonder if I can ask you a question. On the mornings when I don't use my
> block heater the truck starts and fast idles fine. But some times I will
> put my block heater on a timer to start 2 hours before I go to work in the
> morning. When I do this the truck starts fine but will spit and sputter
> for
> aprox. 2 seconds, then run fine. I'm just wondering why the block heater
> being plugged in would make the engine sputter like this for a very short
> time, while without the block heater there is no hesitations. (and don't
> say
> "then don't use the block heater") :-) This has happened like this for
> a
> few years now in winter and has just got me curious. BTW, this is on a
> 97, 318 and it's getting cold here in BC, Canada.
>
> Thanks for any responses,
> Jay
-- -andy andylevy@yahoo.com Maintainer, DML FAQ - http://www.dakota-truck.net/faq/ http://home.twcny.rr.com/andylevy/dakota/ '99 CC 4x4 318 auto
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