Wierd looking temp sending unit?
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Mountain Pass
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Wierd looking temp sending unit?
Have a wierd looking temp sender (I believe) that has three connectors off mounted to the manifold and it appears to be part plastic. Have a 390 engine. Used to seeing the standard sending unit with the screw on terminal on the top.
Am I missing somthing here.
Anyway trying to get my temp gage working and there is no wire hooked to anything under the hood.
Am I missing somthing here.
Anyway trying to get my temp gage working and there is no wire hooked to anything under the hood.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by blakeusa
Have a wierd looking temp sender (I believe) that has three connectors off mounted to the manifold and it appears to be part plastic. Have a 390 engine. Used to seeing the standard sending unit with the screw on terminal on the top. Am I missing somthing here. MAYBE
Anyway trying to get my temp gage working and there is no wire hooked to anything under the hood.
Anyway trying to get my temp gage working and there is no wire hooked to anything under the hood.
Are you looking at the temp sender, or something else?
Something else...and...it's emissions related.
There's 4 different ones. Look closely for a Ford ID number like: D2OE-AA.
What year is the engine, and where on the manifold is this 3 way switch?
The wire for the temp sender comes from the engine gauge feed wiring harness, so the oil sender wire will be part of the same harness. Trace the oil sender wire to the harness, then trace the harness to the temp sender.
Last edited by NumberDummy; Nov 28, 2007 at 07:19 AM.
Ford Parts Specialist
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From: Simi Valley, CA
Originally Posted by fmc400
Kind of sounds like a ported vacuum switch, assuming those are vacuum connections to it.
Some had two ports, some three, some four, and some had three plus wire connectors. All, if original Ford, are marked on the metal casting with Ford ID numbers. CA uses different ones than the other 49 states did.
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What he is describing is the thermal vacuum switch that has hose routing for warm vacuum to the distributor.
This vacuum switch rout's warming vacuum instead of cold vacuum as shown below
Blake, you never said which engine.
This vacuum switch rout's warming vacuum instead of cold vacuum as shown below
Blake, you never said which engine.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
Originally Posted by Mil1ion
What he is describing is the thermal vacuum switch that has hose routing for warm vacuum to the distributor. Yup!
This vacuum switch rout's warming vacuum instead of cold vacuum as shown below Blake, you never said which engine.
This vacuum switch rout's warming vacuum instead of cold vacuum as shown below Blake, you never said which engine.
There are three different types of these switches...depending on application.
All look similar, that's why I asked him to look for a Ford ID number.
8A564 = Coolant Temperature Control Vacuum Switch
9D473 = EGR Vacuum Control Valve (Switch)
12A091 = Distributor Vacuum Control valve
Last edited by NumberDummy; Nov 28, 2007 at 01:25 PM.
Ford Parts Specialist
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From: Simi Valley, CA
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Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
triple post! Somethings wrong with the database.
Last edited by NumberDummy; Nov 28, 2007 at 01:22 PM.
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Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by blakeusa
Have a wierd looking temp sender (I believe) that has three connectors off mounted to the manifold and it appears to be part plastic.
Have a 390 engine. Used to seeing the standard sending unit with the screw on terminal on the top.
Have a 390 engine. Used to seeing the standard sending unit with the screw on terminal on the top.
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Mountain Pass
Joined: Nov 2007
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Yes must be the thermal vac switch
Motor is a Ford 390- FE
Found an aftermarket temp sensor for a gage that the wire was broken off. Thats why I did not see it to start. Previous owner had installed a bunk after market temp gauge and disabled the OEM dash gauge. When I got it nothing worked.
Picked up a OEM style temp sensor for the in dash gage and wil look to install an secondary temp meter w/ temp display ie. Autometer and hook that sensor to an aftermarket filler neck- unless someone has a better idea.
Also car has no smog equipment- what should I do with the thermal vac switch- just leave it? it's not connected to anything???
Thanks for all the help and support.
Blake
Found an aftermarket temp sensor for a gage that the wire was broken off. Thats why I did not see it to start. Previous owner had installed a bunk after market temp gauge and disabled the OEM dash gauge. When I got it nothing worked.
Picked up a OEM style temp sensor for the in dash gage and wil look to install an secondary temp meter w/ temp display ie. Autometer and hook that sensor to an aftermarket filler neck- unless someone has a better idea.
Also car has no smog equipment- what should I do with the thermal vac switch- just leave it? it's not connected to anything???
Thanks for all the help and support.
Blake
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