rick(at)amimotormanagemen
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 Posted: Fri Jan 23, 2009 2:27 am Post subject: GRT EIS problems |
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Hi Guys
I've just had similar problems. Fluctuating oil pressure, low reading EGT and low voltage indication. My CHT and voltage fluctuations only occurred above 20 or 25 degrees C CHT!
Jerry Davies suggested multiple problems and he was right. The oil pressure switch was faulty (They often wear out internally at 200 odd hours or so if left in the Rotax position. However they are five minutes to replace) and I had one wire in my port CTH sender corroded. This was at the junction of the wire and the sender.
Replacing the Oil Pressure switch sorted the pressure fluctuation but didn't affect the other two problems.
What happens with the CHT is that where the two dissimilar wires are twisted together at the sender one, made of non coated steel wire, sometimes corrodes and the other doesn't sending back dodgy voltage indications to the EIS. Cutting the wires back 40mm and reconnecting them to the sender solved both the EGT and the voltage errors.
Both Gerry Davies at Lyndhurst, the UK agent, and Sandy at GRT couldn't have been more helpful.
Hope this helps.
[i]Rick <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />[/i] G-RIKS 912S XS Tri 500 hours.
Checked by AVG.
00:00
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