[Diy_efi] Project/temperature ranges

[gassr]

I agree.
Why would GM find it necessary to use the 'automotive' range in their 
ECM/PCMs? Asking about using 'automotive' range in automotive applications 
may sound silly, but it appears to be a question of using components with 
suspect (at least min.) parameters or going the
distance on both ends, as even the 85?C range could be considered
questionable for underhood temps.

Gary

----- Original Message ----- 
From: "Bill Lewis" <bill at wrljet.com>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, February 27, 2007 8:50 AM
Subject: Re: [Diy_efi] Project/temperature ranges
>
> It's really the low side that you might worry about in an
> automotive application, since 0?C isn't very cold at all.
>
> Bill
>
> Joe Vitek wrote:
>>
>> Commercial range is 0? to +70?C. Industrial is -40? to +85?C. Automotive 
>> range is really tough at -40?C to +125?C.
>>
>>> How does the temp range for 'commercial' differ from 'automotive'?
>>> I'm led to believe 'automotive' is designed to function within a wider
>>> range of temp variation, with both a lower -?C and higher +?C. If so,
>>> why deviate from automotive application norms?