fluctuating idle on '89 US-spec 4A-GZE

[Adrian R]

Sorry... I have to disagree there.

To provide probably the worlds most obvious example, VW's used block mounted 
temp senders and remeber until recently they had no water cooling either. 
Also, some trucks, use both coolant and block temp sensors. I can think of 
early model GM diesls as an example when they had air cooled blocks but 
water cooled heads.

And if you were melting aluminium at the combustion chamber you would most 
certainly know about it. Having had an aluminium piston melt in My turbo 
Mitsubishi Sigma several years ago, I can speak from first hand experience. 
The fireworks and the internal damage are hard to ignore.

Adrian
ajrgsr at hotmail.com


From: David_Roth at mahle-mti.com
>To: toyota-mods at cyberauto.com
>Subject: Re: fluctuating idle on '89 US-spec 4A-GZE
>Date: Thu, 24 Jan 2002 10:31:37 -0500
>
>
>
><<i taped my meter's temperature probe onto the head at # 4 cylinder side
>(where it's supposed to be slightly hotter) and watched the readings while
>the dash temp gauge was pegged and the idle was fluctuating. it didn't get
>any hotter than 170°F and that was w/ the radiator fan unplugged; plugged
>in, the head temp never rose above 155-160°F.>>
>    The temperature at the ouside of the head, or block, is pretty
>meaningless.   If the cooling passages are not full of coolant, you could
>be melting aluminum at the combustion chamber and still not register
>anything alarming on the outside of the engine.
>
>
>David
>
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>Don't know where to turn to start modifying your Toyota?  Try this:
>http://www.cyberauto.com/.  Cyberspace Automotive has fantastic upgrade
>lists for most Toyotas and a friendly & knowledgeable staff!  :-)
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>




_________________________________________________________________
Join the world’s largest e-mail service with MSN Hotmail. 
http://www.hotmail.com

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org