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  #1  
Old 07-09-2000, 09:39 AM
bignblue
 
Posts: n/a
Question

I've come across several references to CTOs on this site (thank you, Dr. Barry!) and was just curious as to what the heck they are! Is this something I should be familiar with?

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'78 Chero WT
401/4bbl/TH400/QT
44s F&R
"Jeep: the toughest 4-letter word on wheels"
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  #2  
Old 07-09-2000, 09:51 AM
Baker Baker is offline
Grease Monkey
 
Join Date: Apr 09, 2000
Location: Longview, Texas
Posts: 462
Cool

"Coolant Temperature Override" or some such nonsense; it's a switch that operates based on coolant temp.

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Baker
'84 Grand Wagoneer "B.U.F.F" (Big Ugly Fat... um...Fellow)
360,727,229, 44 & 20 (3.31s), 30x9.5
If you don't know what all those numbers mean, you shouldn't be here.
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  #3  
Old 07-09-2000, 09:54 AM
mark's Avatar
mark mark is offline
304 AMC
 
Join Date: Jun 14, 2000
Location: nj usa
Posts: 1,906
Wink

it means coolant temperature override.its that funny lookin valve thats screwed into the intake manifold and has vacuum lines attached to it.im pretty sure it retards or advances the timing when the engine temp gets to a certain deg.(someone correct me if im wrong)ive disabled mine a long time ago and im now running an alum edelbrock manifold.i wanted to find a nice plug for the hole but the threads seem unique.
this post is also a test to see if i can get the smiley things to work.

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mark
79 cherokee chief
11 in lift 42 in swampers
(ABOVE THE LAW)
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  #4  
Old 07-09-2000, 04:46 PM
BobBarry
 
Posts: n/a
Wink

<BLOCKQUOTE>quote:</font><HR>Originally posted by mark:
it means coolant temperature override.its that funny lookin valve thats screwed into the intake manifold and has vacuum lines attached to it.im pretty sure it retards or advances the timing when the engine temp gets to a certain deg.(someone correct me if im wrong)<HR></BLOCKQUOTE>

It doesn't do this directly; it simply switches between a port or manifold vacuum source. Or for the EGR, it shuts off or permits the vacuum signal to reach the appropriate valve. They also control the thermostatic air-cleaner and the AIR diverter valve in some years.

<BLOCKQUOTE>quote:</font><HR> ive disabled mine a long time ago and im now running an alum edelbrock manifold.i wanted to find a nice plug for the hole but the threads seem unique.
<HR></BLOCKQUOTE>

It's a standard NPT fitting; probably a 3/8" size.

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Bob Barry
<UL TYPE=SQUARE>* '78 Cherokee 4-door
* '88 Grand Wagoneer[/list] http://studentweb.providence.edu/~rbarry/wheels/
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  #5  
Old 07-10-2000, 10:31 PM
irbob's Avatar
irbob irbob is offline
FSJ Maniac
 
Join Date: Apr 11, 2000
Location: Huachuca City, AZ 85616
Posts: 2,788
Cool

This may help.



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83 Wagoneer Brougham, AMC 360, Chrysler 999 Auto, NP 229 Txfr, F/Diff Dana 44F, R/Diff AMC 8 7/8", 31X10.5 Pathfinder's, Rancho RS 9000's, 2" rear blocks.
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