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What are these???

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Red20 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Red20 Quote  Post ReplyReply Direct Link To This Post Topic: What are these???
    Posted: May/15/2018 at 8:51pm
Not sure what section this best fits in, so here it is.

Need help identifying the following items:

Under wiper motor with vacuum hose connected to it


Behind grill, driver side. Vacuum connection and separate electrical connection.

1969 Javelin SST "Screamin' Banana" - 16k original miles, warm 360, TH-350, Model 20 TracLok, DAILY DRIVER
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pacerman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pacerman Quote  Post ReplyReply Direct Link To This Post Posted: May/15/2018 at 9:20pm
The second picture shows the ambient temperature sensor for the TCS (transmission controlled spark) system.  I think the first picture might show the TCS solenoid vacuum valve.  That TCS system was used to control NOx emissions during the early 70s.  If that Hornet is older than 1976 you can disable that system in CA.  Joe
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billd Quote  Post ReplyReply Direct Link To This Post Posted: May/15/2018 at 9:57pm
Especially if it's an automatic and there's a four wire connector where the NSS and backup light connections go - then I suspect he's right about TCS.
Mid-70s cars with automatics had that in many cases.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Samuelsc360 Quote  Post ReplyReply Direct Link To This Post Posted: May/16/2018 at 7:47am
That vacuum valve is supposed to be mounted to the rear of the engine.  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Red20 Quote  Post ReplyReply Direct Link To This Post Posted: May/16/2018 at 11:19am
Ok, I was wondering if that was TCS stuff based on my wiring schematic. Weird system the way AMC (I guess everyone?) did it. The 727 only has the 3 terminal NSS.

Thanks guys. More parts for the parts shelf then.
1969 Javelin SST "Screamin' Banana" - 16k original miles, warm 360, TH-350, Model 20 TracLok, DAILY DRIVER
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 401MATCOUPE Quote  Post ReplyReply Direct Link To This Post Posted: May/16/2018 at 12:20pm
Bill D is talking about the NSS switch connector at firewall having the 4 wire connector, not at the actual NSS.  That is where AMC tied the Speed sensor for the TCS switch int the harness.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Red20 Quote  Post ReplyReply Direct Link To This Post Posted: May/16/2018 at 12:32pm
Oh ok. That makes more sense.

While we’re on the subject of vacuum, sensors, switches, etc., are both of the vacuum lines running into the engine bay through the A/C hoses grommet for the vacuum heater control valve? And why two separate supply lines then? I’m just gonna run them to a T, I suppose. I have an extra nipple on the back of my manifold from when I ran a TH350 with a vacuum modulator.
1969 Javelin SST "Screamin' Banana" - 16k original miles, warm 360, TH-350, Model 20 TracLok, DAILY DRIVER
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Snotty Quote  Post ReplyReply Direct Link To This Post Posted: May/16/2018 at 3:35pm
Originally posted by pacerman pacerman wrote:

The second picture shows the ambient temperature sensor for the TCS (transmission controlled spark) system.  I think the first picture might show the TCS solenoid vacuum valve.  That TCS system was used to control NOx emissions during the early 70s.  If that Hornet is older than 1976 you can disable that system in CA.  Joe

I had that part on our '73 Gremlin X, 258 and 3-speed. I had no idea what it was or where it came from. Still have it in a box.
Son's car: '73 Gremlin X, 401, T-10, Mopar 8.75 rear with 3.23 sure grip. My car: '70 Newport Convertible, 440 automatic
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