 CSV connection polarity......does it matter? |
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| Strudelwagon |
 Mar 30 2012, 07:35 PM
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#1
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Member  Group: Members Posts: 411 Joined: 11-October 08 From: interior, British Columbia Member No.: 9,633 Region Association: Canada  |
So I tried starting up the beast after 2 years and I put everything back to stock.
When I fired it up,it ran like crap! Wouldn't idle and just sounded like garbage. New plugs and wires,new fuel lines,filters and vacuum lines. So I started checking all connection and bingo! Broken wire on the CSV harness ,had been repaired before. Only issue,when I pulled off the electric tape the connectors dropped out of the plastic plug holder. So,does it matter which wire goes where? If so,how do you know....both wires in the harness are white. (IMG:style_emoticons/default/confused24.gif) SW |
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Replies(1 - 6)
| Strudelwagon |
Mar 30 2012, 08:49 PM
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#2
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Member Group: Members Posts: 411 Joined: 11-October 08 From: interior, British Columbia Member No.: 9,633 Region Association: Canada |
Found it! BOWLSBY......YOU ROCK.
Your GA Harness diagram was perfect for what I needed.  Thanks JEFF (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif) SW |
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| Cap'n Krusty |
Mar 30 2012, 09:09 PM
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#3
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Uhhhhhhhhhhhhhhhhhhhhh, there's only ONE wire to the CHT sensor.
Well, don't I feel stupid. "CSV" harness. Ok, 2 wires, yes it matters, and Jeff's diagram is well suited to aiding you in the repair. However, most of us never start the car under conditions where the CSV actually activates, so the question is somewhat moot. The Cap'n |
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| ape914 |
Mar 30 2012, 09:12 PM
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#4
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red locktite Group: Retired Members Posts: 240 Joined: 7-February 11 From: In front of a computer Member No.: 12,676 Region Association: None |
CHT harness???????? what is it if it got more than one wire??????
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| Strudelwagon |
Mar 30 2012, 11:04 PM
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#5
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Member Group: Members Posts: 411 Joined: 11-October 08 From: interior, British Columbia Member No.: 9,633 Region Association: Canada |
QUOTE(ape914 @ Mar 30 2012, 08:12 PM)  CHT harness???????? what is it if it got more than one wire?????? Sorry Boys, I meant CSV |
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| JeffBowlsby |
Mar 30 2012, 11:47 PM
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#6
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914 Wiring Harnesses Group: Members Posts: 8,535 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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Thanks but undeserved.....
The 1970-74 CSV (a simple solenoid valve) has only two wires...one is power, the other is ground if and only if the TS senses something like 20F, and the engine is cranking. Otherwise the circuit remains open and the valve does not spray. At least that is how it is supposed to work. I think you may have fixed some other issue unknowingly. |
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| Strudelwagon |
Mar 31 2012, 07:03 AM
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#7
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Member Group: Members Posts: 411 Joined: 11-October 08 From: interior, British Columbia Member No.: 9,633 Region Association: Canada |
QUOTE(Jeff Bowlsby @ Mar 30 2012, 10:47 PM) Thanks but undeserved..... The 1970-74 CSV (a simple solenoid valve) has only two wires...one is power, the other is ground if and only if the TS senses something like 20F, and the engine is cranking. Otherwise the circuit remains open and the valve does not spray. At least that is how it is supposed to work. I think you may have fixed some other issue unknowingly. Thanks Jeff, The PO had a number of things disconnected or plugged. The AAR port to the airbox was plugged. He had a potentiometer c/w on/off in line with the CHT and who knows what else. Looks like I'm going to have to go through everything. You still deserve thanks as I've used just about every hand drawn wiring diagram you have on your site to reconnect all the wiring. Much easier than trying to figure out the factory schematic. SW |
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