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<\/figure>\n\n\n\nSkip ahead to spring of 2025. I just got the LinkECU installed, let’s see if I can get the AC going now too? The digital climate control died in the fall of 2024, so I sent it out to get replaced by a shop I found on eBay that happened to be in Houston. I replaced the Dryer & Expansion Valve, vacuumed out the system, it held vacuum for multiple days and I go to fill it and no luck. I can’t get the AC Clutch to engage. I look in the LinkECU and it is not receiving any signal to “enable” the AC. I gave up. Defeated. <\/p>\n\n\n\n
Round 2!<\/p>\n\n\n\n
Alright this year I was 100% going to get this working. Hell or high water it would work! I’d either fix it or throw money at it and replace everything in it! <\/p>\n\n\n\n
First thing first is to remove the “short” green-orange and green-yellow wires from before. I needed to start with a clean slate. Upon doing that the red-dot came back! However I could tell the AC was actually working now for the 3-5 seconds that the snow flake was showing. So I posted on 3Si<\/a> asking for help. <\/p>\n\n\n\n With the help of two great people paul93VR4<\/a> & AlmosN8kd<\/a> we were able to diagnose the problem was the compressor has an RPM signal sent to the “Compressor Lock Controller” along with the Engine RPM. It does a “comparison” of the two RPM’s and if it’s within a specific percentage it will turn the clutch on. Well with the use of a oscilloscope I was able to determine that the compressor wasn’t sending any RPM signal. Then I pondered it and questioned “what if it didn’t have the engine’s RPM either?”… after a major struggle depinning this I was eventually rewarded with a working AC without a weird “short” or resistor hanging around. I labeled the removed pin with a heatshrink and closed everything back up. Now this isn’t perfect. If the AC seizes, I won’t know. The belt will snap and it can damage the timing belt. So I consider this a “solved … until” and that until is when I have to remove more of parts in the way of the AC so that I can really pull out the wires and test it out to determine if it’s the sensor or just a wire that got messed up. <\/p>\n","protected":false},"excerpt":{"rendered":" Air Conditioning! Someone may say that it is an absolute requirement in Texas. That someone is me. So going 8 years in Texas without working AC has basically limited the Stealth’s usage to just the winter… if it was hotter than mid 80’s I didn’t want to be in the stealth. It’s as simple as […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,22],"tags":[24,45,30,25,28],"class_list":["post-316","post","type-post","status-publish","format-standard","hentry","category-stealth","category-upgrades","tag-3000gt","tag-ac","tag-ecu","tag-stealth","tag-upgrades"],"_links":{"self":[{"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/316","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=316"}],"version-history":[{"count":1,"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/316\/revisions"}],"predecessor-version":[{"id":320,"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/316\/revisions\/320"}],"wp:attachment":[{"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=316"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=316"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tenfpv.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
I checked the actual AC the best I could without tearing everything out and as far as I could tell the sensor was plugged in and the wires weren’t destroyed. So I needed to find a way to “hotwire” this thing into working… I was able to short two of the wires (pins 13 & 15) on the lock controller, and then short pin 15 to ground with a resistor so that it would drain and disengage when the AC wasn’t requested. This worked, but it was a janky solution.
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