X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [64.129.170.194] (HELO VIRCOM1.fcdata.private) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTP id 5123413 for flyrotary@lancaironline.net; Tue, 13 Sep 2011 18:29:16 -0400 Received-SPF: none receiver=logan.com; client-ip=64.129.170.194; envelope-from=cbarber@texasattorney.net Received: from FCD-MAIL06.FCDATA.PRIVATE ([fe80::697f:d6aa:b87:78d8]) by FCD-MAIL05.FCDATA.PRIVATE ([fe80::809d:a06e:5913:452e%13]) with mapi id 14.01.0323.003; Tue, 13 Sep 2011 17:28:16 -0500 From: Chris Barber To: Rotary motors in aircraft Subject: EM2 problems Thread-Topic: EM2 problems Thread-Index: AcxyYnOjOV27O+ugSKuKUiEB2AR2QA== Date: Tue, 13 Sep 2011 22:28:06 +0000 Message-ID: <2D41F9BF3B5F9842B164AF93214F3D30A160F011@FCD-MAIL06.FCDATA.PRIVATE> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [69.148.239.2] Content-Type: multipart/alternative; boundary="_000_2D41F9BF3B5F9842B164AF93214F3D30A160F011FCDMAIL06FCDATA_" MIME-Version: 1.0 --_000_2D41F9BF3B5F9842B164AF93214F3D30A160F011FCDMAIL06FCDATA_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I have posted in the past with problems regarding my EM2 giving me wildly i= nconsistent reading with my EGT's. The reading flash to randomly increasing= numbers up to readings of 9000 degrees. I replaced the EGT sensors and al= l wires/thermal couplers to the EGT to no avail. The consensus has been "n= oise" especially since the EGT are so low voltage. I have now run the wire= rs along the outside to the plane away from all other wires and still no jo= y. NOW, I am having strange readings with the coolant temperature. I have not= changed anything, no movement of wires etc...well, at first, I have now re= placed the sender with no change. What seems to be happening is that when = the engine is not running, the coolant temperature seems about right (which= is pretty close to the oil temp....my oil temps dropped quite a bit after = finally getting my oil pressure up with a new front cover O-ring). HOWEVER= , when I start up the engine the coolant temperature reading shoots up anyw= here from 50 to 100 degrees higher than before I start and/or immediately a= fter I shut down (thus not enough time to cool). It is also about the same= amount higher than the oil reading. I have removed the wire from the bund= led harness to minimize interference. I am suddenly also having an issue with the coolant pressure reading flashi= ng to "N" intermittingly (I am guessing similiar to the NOP on the tach). = I too have checked the wires. Nothing has been changed, the coolant temp a= nd pressure just started happening...the EGT has always been a problem. Ag= ain, I have now replaced all the sening units and wires. Ok, while the EGT may be somewhat secondary in use, the coolant temperature= is not. I have tried various wires. Moved wires and replaced all sensors= and re-did D-sub pins. Thoughts? I am about two minutes away from ordering the Dynon engine monitor( which I= intend to buy eventually anyway), however, I am not thrilled at the idea = of throwing money at what may be a simple fix...and may still have problems= with even with the new unit. Thanks. Chris --_000_2D41F9BF3B5F9842B164AF93214F3D30A160F011FCDMAIL06FCDATA_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I have posted in the past with problems regarding my EM2 <= /a> giving me wildly inconsistent reading with my EGT's<= a>. The reading flash to randomly increasing numbers= up to readings of 9000 degrees. I replaced the EGT= sensors and all wires/thermal couplers to the EGT to no avail. The consensus has been "noise" especi= ally since the EGT are so low voltage. I ha= ve now run the wirers along the outside to the plane away from all other wires and still no joy.

NOW, I am having strange readings with the coolant temperature.&nbs= p; I have not changed anything, no movement of wires etc...well, at first, = I have now replaced the sender with no change. What seems to be happe= ning is that when the engine is not running, the coolant temperature seems about right (which is pretty close to the oil te= mp....my oil temps dropped quite a bit after finally = getting my oil pressure up with a new front cover O-ring). HOWEV= ER, when I start up the engine the coolant temperature reading shoots up anywhere from 50 to 100 degrees higher than before I start = and/or immediately after I shut down (thus not enough time to c= ool). It is also about the same amount higher= than the oil reading. I have removed the wire from the bundled harness to minimize interference .

I am suddenly also having an issue with the coolant pressure reading fla= shing to "N" intermittingly (I am guessing similiar t= o the NOP on the tach). I too have c= hecked the wires. Nothing has been changed, the coolant temp and pressure just started happening...the EGT has always = been a problem. Again, I have now replaced all the sening= units and wires.

Ok, while the EGT may be somewhat secondary in= use, the coolant temperature is not. I have tried various wires.&nbs= p; Moved wires and replaced all sensors and re-did D-sub pins.

Thoughts?

I am about two minutes away from ordering the Dynon engine monitor( which I intend to buy eventually anyway), however,&nb= sp; I am not thrilled at the idea of throwing money at what may be a s= imple fix...and may still have problems with even with the new unit.

Thanks.

Chris

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