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  #1  
Old 07-28-2015, 04:28 AM
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Newbie to the 617A... what are these?

These have never been hooked up as far as Ive had it. I assume some kind of temp sensor but the other two things? I am going to order an EGR block-off kit to start cleaning it up.

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  #2  
Old 07-28-2015, 05:53 PM
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On the right are vacuum connectors to the erg valve, good they aren't hooked up.

The item on the left is, I believe, a temp sensor, should have an electrical connection.

WAY on the left, seems to be an ARV, (air recirculating valve) [vacuum] what year? My guess is 1985, or a Cali 84.

But that can be isolated too.
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Old 07-28-2015, 07:05 PM
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Thanks. It's an 84.

I thought my temp sensor was the similar thing that is just under my glow pugs?

Is there a block off plate for that ARV or should I just leave it alone?
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Old 07-29-2015, 09:43 AM
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Depends, if the egr system has been bypassed, there is no need for the ARV to be connected.

The main computer is in the shop, don't have a pic here.
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Old 07-30-2015, 11:13 PM
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Quote:
Originally Posted by 300 Super D View Post
Thanks. It's an 84.

I thought my temp sensor was the similar thing that is just under my glow pugs?
The actual temp sensor is under the glow plugs. The temp sensor near the thermostat (the middle arrow) is the axillary fan switch (i think).
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Old 07-31-2015, 10:08 AM
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The aux fan switch is in A/C system near the drier, along with the pressure switch, which is in the drier, IIRC.

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