 Cold start injector Q |
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| rjames |
 May 3 2021, 10:00 AM
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#1
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I'm made of metal  Group: Members Posts: 3,974 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest 
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Should the cold start injector have voltage going to after the engine is warmed up? I thought that it was only supposed to fire when temps were below ~32 degrees. I haven't pulled the injector out to see if it's actually spraying fuel, but I'm pretty sure it is given the change in how the engine runs at idle when I unplug it, even after the engine is warm.
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| rjames |
May 3 2021, 05:48 PM
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#2
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I'm made of metal Group: Members Posts: 3,974 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
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Crap. It's been a long day- I realize all this time I was talking about the Air Temp sensor that plugs into the top of the plenum. (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/unsure.gif)
Of course doesn't change the fact that my cold start valve could be leaking and be the source of the intermittent issues. I will look into that. So now that I've got my head on straight, can someone school me on how the air temp sensor (TS1) works? You may be impressed to learn that I've adjust my engine to both run with it and without it at various times. (IMG:style_emoticons/default/rolleyes.gif) |
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| GregAmy |
May 3 2021, 06:09 PM
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#3
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Advanced Member Group: Members Posts: 2,311 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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(IMG:style_emoticons/default/wink.gif)
QUOTE(rjames @ May 3 2021, 06:48 PM)  ...can someone school me on how the air temp sensor (TS1) works? It's just a thermistor that inputs into the computer which does some non-solid-state analog magic calculation to change...something. Anders says "Expected value...300 ohms @ 68 deg. F" "Failure Modes Open: Makes the mixture somewhat richer. Check with an ohmmeter. Shorted: Makes the mixture somewhat leaner. Check with an ohmmeter. " https://members.rennlist.com/pbanders/DJetParts.htm |
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| rjames |
May 3 2021, 10:19 PM
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#4
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I'm made of metal Group: Members Posts: 3,974 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
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QUOTE(GregAmy @ May 3 2021, 05:09 PM) (IMG:style_emoticons/default/wink.gif) QUOTE(rjames @ May 3 2021, 06:48 PM) ...can someone school me on how the air temp sensor (TS1) works? It's just a thermistor that inputs into the computer which does some non-solid-state analog magic calculation to change...something. Anders says "Expected value...300 ohms @ 68 deg. F" "Failure Modes Open: Makes the mixture somewhat richer. Check with an ohmmeter. Shorted: Makes the mixture somewhat leaner. Check with an ohmmeter. " https://members.rennlist.com/pbanders/DJetParts.htm Ok, well that tracks. Wish I could start this thread over. (IMG:style_emoticons/default/rolleyes.gif) That said, I at least have something else to test- the cold start valve for leaks. |
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Posts in this topic
rjames Cold start injector Q May 3 2021, 10:00 AM
GregAmy It has 12V all the time. The thermoswitch at the s... May 3 2021, 10:16 AM rjames Are you sure?
My understanding form a post from M... May 3 2021, 03:19 PM
GregAmy
Are you sure?
Yes, I'm sure I was wrong earli... May 3 2021, 03:33 PM GregAmy Trace the power side of the connector to see if it... May 3 2021, 03:39 PM rjames @GregAmy
Thank you, this is super helpful. I... May 3 2021, 04:29 PM JeffBowlsby Not only does the Djet CSV have full time power to... May 3 2021, 04:38 PM rjames
Not only does the Djet CSV have full time power t... May 3 2021, 05:39 PM JeffBowlsby
Not only does the Djet CSV have full time power t... May 3 2021, 05:41 PM |
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