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#1 |
Registered User
Join Date: Sep 2011
Location: Sacramento
Posts: 196
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What is this on my I6 250?
What is this and what is it for? 68 inline 250......driver's side
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1968 Chevy SWB stepside original USAF truck http://67-72chevytrucks.com/vboard/s...d.php?t=483462 |
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#2 |
Member
Join Date: Jan 2011
Location: Stuart, Florida
Posts: 459
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Re: What is this on my I6 250?
looks like a broken sending unit. Probably water temp
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1970 CST LB Fleetside, 402 BB, PS, PB,AC 1968 Firebird 400 conv. 1965 Chris Craft 17' wood ski boat (SN #0001) |
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#3 |
Registered User
Join Date: Sep 2011
Location: Wildrose, North Dakota
Posts: 300
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Re: What is this on my I6 250?
That is a broken water temp sending unit just like the previous poster said.
Those 68 chevy stepsides with the I6 must have been popular with the government. I've got a parts 68 that says Dept of Interior. |
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#4 | |
Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Re: What is this on my I6 250?
Quote:
![]() Hard to read in the picture, but it has all the pertainate info. ![]()
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'68 Panel Project Boogie Chillin' '68 C-10 Ol' Green |
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#5 |
Registered User
Join Date: Jul 2010
Location: MD
Posts: 1,937
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Re: What is this on my I6 250?
Yes they were. Have a had a few retired Army guys say upon seeing my truck that they drove a lot of them on base back in the day.
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1969 c-10 Step Side Long Bed. I-6 250cid = ![]() Last edited by GRX; 09-06-2012 at 05:59 PM. |
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#6 |
Registered User
Join Date: Sep 2011
Location: Sacramento
Posts: 196
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Re: What is this on my I6 250?
Cool, thanks for the replies.
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1968 Chevy SWB stepside original USAF truck http://67-72chevytrucks.com/vboard/s...d.php?t=483462 |
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#7 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,628
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Re: What is this on my I6 250?
If it's not leaking it's not broke!
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#8 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,218
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Re: What is this on my I6 250?
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#9 |
Registered User
Join Date: Sep 2011
Location: Sacramento
Posts: 196
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Re: What is this on my I6 250?
Mine still has that plate on the glove box also
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1968 Chevy SWB stepside original USAF truck http://67-72chevytrucks.com/vboard/s...d.php?t=483462 |
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#10 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,628
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Re: What is this on my I6 250?
The bulb with sensing line is gone for sure. The thermowell is there. If it's not leaking it's not a problem. Could put a plug in it I suppose.
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#11 |
Registered User
Join Date: Sep 2011
Location: Sacramento
Posts: 196
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Re: What is this on my I6 250?
Yeah it's not leaking fluids. I just didn't know what it was for and wasn't sure if it might contribute to the engine not running right. Just a thermostat wouldn't affect that though.
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1968 Chevy SWB stepside original USAF truck http://67-72chevytrucks.com/vboard/s...d.php?t=483462 |
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#12 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,218
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Re: What is this on my I6 250?
It possibly might have been an emission control senser but most likely it was for a gauge or warning light. It would be a good idea to replce it with the corresponding sending unit. There should be a green wire around there that hooks to it.
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#13 | |
Registered User
Join Date: Jul 2010
Location: MD
Posts: 1,937
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Re: What is this on my I6 250?
Quote:
![]()
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1969 c-10 Step Side Long Bed. I-6 250cid = ![]() |
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#14 |
Registered User
Join Date: Sep 2011
Location: Wildrose, North Dakota
Posts: 300
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Re: What is this on my I6 250?
68 was the first year they vented the crankcase to the air filter. I think thats all they had as far as emission control goes. Yes green wire should come around from the passenger side of the engine. It has kinda an interesting connector on it too.
Sorry for starting the gov truck tangent.
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Dane 67 Chevy Fleet 250/4 speed 1/2 ton 68 Chevy 250/4 speed 1/2 ton for parts 49 GMC Grain truck 235 1 1/2 ton 76 Chevy 350/4 speed 1/2 ton |
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#15 |
Registered User
Join Date: Nov 2011
Location: Kirkland, WA
Posts: 343
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Re: What is this on my I6 250?
Yep. it WAS a sending unit. I have seen these boken off and a new one installed in the thermostat housing! Look for where the green wire is going to, make sure it is connected to a working sending unit. I love those 250 I6's.
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#16 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,285
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Re: What is this on my I6 250?
Do we see the lines for the A.I.R smog set-up in your pic?
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#17 |
Registered User
Join Date: Sep 2011
Location: Sacramento
Posts: 196
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Re: What is this on my I6 250?
Yup
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1968 Chevy SWB stepside original USAF truck http://67-72chevytrucks.com/vboard/s...d.php?t=483462 |
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#18 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,285
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Re: What is this on my I6 250?
Does it still work?
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#19 |
Registered User
Join Date: Sep 2011
Location: Sacramento
Posts: 196
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Re: What is this on my I6 250?
I don't know, it's never had a belt on it since I've had it.
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1968 Chevy SWB stepside original USAF truck http://67-72chevytrucks.com/vboard/s...d.php?t=483462 |
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