Darren Kerns
Well Known Member
I have been experiencing an high oil temperature indication when coming into the pattern to land. I have AFS 3400s screens with engine monitoring sensors.
My oil temperature sensor was replaced at 310 hours and now may have to be again at 344 hours. During climbout and cruise it seems to be indicating fine. It is running a little warmer but it has been extremely hot here.
I called Rob and he told me to check of my wiring to and from the engine. So tonight my wife pulled both cowls and checked the engine ground to airframe wire. It had some oil on it but I cleaned it up and refastened. No crimps were lose. I checked all wiring to & from the alternator it seemed fine. Nothing lose. I then climbed underneath the panel and check breakers, crimps, and wiring and found nothing lose.
Rob suggested I turn off the alternator field and see what it did. My oil temperature was indicating 266 degrees and when I turned it off, it dropped to 187 within seconds. It seems I have some type of electrical interference.
I am getting so frustrated because I do not know what else to look at.
Can anyone help me to look at something else I have not thought of? I am going to order a new oil temperature sensor from AFS. However, this may not fix the problem.
Sidenote: When I replaced it back at 310 hours it was doing the same thing. I installed a new oil temperature sensor and it fixed the problem.
The other day when I was flying my 7 my oil temperature jumped to 366 degrees & then dropped to 204 within 2 seconds. This was without me turning my alternator field off. This is impossible for oil temp to change that much in 2 seconds.
Please, if anyone can give me some advice I would greatly appreciate it.
Thanks
Darren Kerns
RV7 N599DT
My oil temperature sensor was replaced at 310 hours and now may have to be again at 344 hours. During climbout and cruise it seems to be indicating fine. It is running a little warmer but it has been extremely hot here.
I called Rob and he told me to check of my wiring to and from the engine. So tonight my wife pulled both cowls and checked the engine ground to airframe wire. It had some oil on it but I cleaned it up and refastened. No crimps were lose. I checked all wiring to & from the alternator it seemed fine. Nothing lose. I then climbed underneath the panel and check breakers, crimps, and wiring and found nothing lose.
Rob suggested I turn off the alternator field and see what it did. My oil temperature was indicating 266 degrees and when I turned it off, it dropped to 187 within seconds. It seems I have some type of electrical interference.
I am getting so frustrated because I do not know what else to look at.
Can anyone help me to look at something else I have not thought of? I am going to order a new oil temperature sensor from AFS. However, this may not fix the problem.
Sidenote: When I replaced it back at 310 hours it was doing the same thing. I installed a new oil temperature sensor and it fixed the problem.
The other day when I was flying my 7 my oil temperature jumped to 366 degrees & then dropped to 204 within 2 seconds. This was without me turning my alternator field off. This is impossible for oil temp to change that much in 2 seconds.
Please, if anyone can give me some advice I would greatly appreciate it.
Thanks
Darren Kerns
RV7 N599DT