sharif101 Posted September 4, 2011 Share Posted September 4, 2011 without eng(-7b) start.if #1 throtle foward above 65deg fuel correction light goes out.other eng correction light not goes out.#1eng parrameter ok.s.s.control change,cordinator ck good,throtle rigging,td amp check.what may be caused. Quote Link to comment Share on other sites More sharing options...
Steve1300 Posted September 4, 2011 Share Posted September 4, 2011 You may have a failed relay box. There is a support beam under and behind your engine oil tank. On the back side of that beam is a relay box that is part of the TD system. One of the relays in there can be causing your problem. Quote Link to comment Share on other sites More sharing options...
Lkuest Posted September 4, 2011 Share Posted September 4, 2011 You may have a failed relay box. There is a support beam under and behind your engine oil tank. On the back side of that beam is a relay box that is part of the TD system. One of the relays in there can be causing your problem. Steve is 100% correct. Out of the three times I've seen this problem, all of them were caused by a failed engine relay box. You may also have a failed 94% switch in the speed sensitive control. You don't even need to perform an engine run to ops check this function of the new relay box. Just slave a new relay box in, and advance the throttle with the engine not running. If it still has the problem, short out pins F and D on the speed sensitive control and try again. If shorting out pins F and D on the speed sensitive control fixes the problem, the speed sensitive control is bad. Something for everybody to keep in mind for troubleshooting strange temp controlling light issues without running engines, you can fool the engine into going to temp controlling mode by simply disconnecting the speed sensitive control cannon plug, and the light should go out and come on with throttle movement. It is a very useful tool for strange temp controlling problems, or the fuel correction light just not coming on or not going out when it's supposed to (light receptical issues). Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted September 4, 2011 Share Posted September 4, 2011 Agree, sounds like a bad relay box . . . . . Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted September 8, 2011 Share Posted September 8, 2011 Ok is this engine the same engine as the TIT low at take off discussion? Both posters are from Dhaka,Bd. Quote Link to comment Share on other sites More sharing options...
sharif101 Posted September 9, 2011 Author Share Posted September 9, 2011 no i m in DR Congo.i was dhaka.he is my friend.my aircraft is another.i could not solve my problem.Now take off TIT is 955 deg null ok.relay box change but fuel correction still goes out without running eng but we fly continue. Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted September 9, 2011 Share Posted September 9, 2011 Check wires between the SSC and the engine junction box with the SSC connected (less than 94% switch should be colsed). If the wiring is open the engine thinks it is "above" 94% and there will be no power to keep the correction light illuminated with the throttle above 65degrees. Quote Link to comment Share on other sites More sharing options...
tusker Posted September 9, 2011 Share Posted September 9, 2011 you keep on flying the bird so!! it means you do get the right torque at take off and the throttle allignment is ok!!??....if yes!....at least you can relax and have a coffe while you're thinkin' about it The main thing is that you need the right power with no overtemp......no throttle split. Run it and try to give us some more info! (maybe I'm out of line!) Quote Link to comment Share on other sites More sharing options...
Turboprop7 Posted November 10, 2011 Share Posted November 10, 2011 Did you ck continuity on the coord as you move above 65 degrees? Quote Link to comment Share on other sites More sharing options...
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