schurch379 Posted October 26, 2016 Report Posted October 26, 2016 I bought a 2007 CTLS in 2012. I have flown it all over the Hawaiian islands. It is well maintained and hangered. One thing I have constantly noticed is that ( on the EMS display ) the amperage reading fluctuates almost second to second all over the place--usually, from -8amps to +10 amps. The voltage reading fluctuates just a little bit, almost always in the 12.8V to 13.2V range. The fluctuation on the amp reading is much small when the engine is at taxing rpms ( & always in the green ), but at 5,200rpm cruise it bounces around almost second to second.And occasionally if the amp reading bounced to -10amps or so---into the red, the red engine light would come on. This is a little bothersome when flying over the ocean, and caused a little worry with my wife today. The engine runs just great, and there are no other issues, but I thought I better ask more knowledgeable people--like you all, what you thought of this...???Would appreciate your thoughts on this....Thanks.ScottKona HawaiiFDN992SA
Tom Baker Posted October 26, 2016 Report Posted October 26, 2016 Check your ground connections first. Next check the capacitor to make sure a wire is not disconnected or broken. After those I would start checking other electrical connections starting at the voltage regulator.
Anticept Posted October 27, 2016 Report Posted October 27, 2016 Installing a 100k capacitor that chanik recommended dramatically decreases ammeter bounce. And it's the terrible regulator rectifiers that are noisy. The power coming off the coils will be pretty clean.
CT4ME Posted November 1, 2016 Report Posted November 1, 2016 Scott, CPS' System Manager emailed me with a message for you: “Scott,This sounds like a loose ground wire. I would check all the ground connections and see if this fixes the problem.-Bryan”
Tom Baker Posted November 2, 2016 Report Posted November 2, 2016 After we talked today his problem is fixed. What was the issue? It might be of help to someone else in the future.
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