 Winter D jet tinkering, Are parts still available? |
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| robkammer |
 Jan 9 2026, 01:38 PM
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Member  Group: Members Posts: 242 Joined: 7-January 21 From: Vermilion Ohio Member No.: 25,049 Region Association: North East States  |
All: Started this morning to get the BB's few quirks figured out while it's still winter. Last year the car ran great, but it had trouble staying running for the first 5 miles or so. Cold start no problems, let it sit and idle for 5 minutes, ls no problem. Once underway, as soon as I let off the pedal, it would want to stall. I was able to get through it by using the hand brake, but that's a pain.
I know I have a bad vacuum valve that is supposed to shut the throttle body down on decel, but I've just plugged it and left it place. If it's not plugged, the open vacuum takes the idle way too high. It's been like that for two years, but not for long if I can find a new one. The AAR is working but I'm not certain about the Thermotine sender. I'm sure Jeff B or someone smarter than me has the specs to bench test one. If anyone has suggestions on what might be the problem here, I'm open to all suggestions. Cheers! Rob Attached thumbnail(s) 
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| JeffBowlsby |
Jan 10 2026, 04:34 PM
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 9,159 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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The TTS is a temperature dependent sensor, it only provides ground to the AAR, completing its circuit to the AAR based on the ambient air temp just above the engine case. Super simple, just the we like it.
Brad Anders D-Jet pages have a new link, actually its now hosted directly on his personal server: https://pbanders.synology.me/914/ The previous site may remain accessible on rennlist for awhile, they don't keep them updated. Use the new link which has the most up to date information. |
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| Superhawk996 |
Jan 10 2026, 08:49 PM
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914 Guru Group: Members Posts: 7,616 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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QUOTE(JeffBowlsby @ Jan 10 2026, 06:34 PM)  The TTS is a temperature dependent sensor, it only provides ground to the AAR, completing its circuit to the AAR based on the ambient air temp just above the engine case. Super simple, just the we like it. @JeffBowlsby Think you meant cold start valve (injector)? The thermoswitch has nothing to do with the AAR. |
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Posts in this topic
robkammer Winter D jet tinkering Jan 9 2026, 01:38 PM
brant Test your CHT.
It could be failing when fully wa... Jan 9 2026, 03:33 PM FlacaProductions Fuel hose kink that after it gets going, collapses... Jan 9 2026, 03:34 PM emerygt350 This sounds like a bad aar Jan 9 2026, 06:19 PM
rjames
This sounds like a bad aar
If it was a bad AAR ... Jan 9 2026, 08:46 PM emerygt350 If it's gone, but it can be a slow death with ... Jan 10 2026, 05:58 AM emerygt350 And I have no idea what a "thermotine sender... Jan 10 2026, 05:59 AM bdstone914 @[url=http://www.914world.com/bbs2/index.php?showu... Jan 10 2026, 07:46 AM bdstone914 Duplicate Jan 10 2026, 07:47 AM robkammer Thanks for the replies. The AAR is functioning wel... Jan 10 2026, 07:22 AM emerygt350 Perhaps you have something miswired? The AAR is f... Jan 10 2026, 07:36 AM sechszylinder It is difficult to determine from a distance becau... Jan 10 2026, 08:47 AM pbanders
It is difficult to determine from a distance beca... Jan 10 2026, 08:42 PM robkammer Thanks fellas, all good info. My mistake, Thermo t... Jan 10 2026, 10:38 AM sechszylinder
Does the CHT sensor control the AAR?
no defini... Jan 10 2026, 11:01 AM robkammer Thanks Benno! That makes sense, hot all the t... Jan 10 2026, 02:37 PM JeffBowlsby Of course… :gerflag: :agree: :thumbsup: what w... Jan 10 2026, 08:56 PM wonkipop
Once underway, as soon as I let off the pedal, it... Jan 11 2026, 01:18 AM |
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