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Reiver
Join Date: Nov 2011
Posts: 57,476
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confirming temp gauge readings
gents, my 216 k mile car seems to be running a bit higher in temp than expected in the cooler temps...but not much.
210 cruising on a cool day at 72 mph flat terrain. 225 in stop/go on a cool day (60 degrees). Could be the gauge no? Called a local Phoenix Porsche shop and the owner said the oil in the filter will run about 10 degrees less than the indicated dash sender temp using an ir temp unit. I am noting a 20 dgree temp dif...187 @ filter - 207 or so @ the dash gauge. Has anyone heard this correlation before between the filter/gauge temps? |
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12-21-2011, 03:28 PM
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,965
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Who are you using in Phoenix to get work done. There is one shop that I would not trust to work on a taxi-cab, not to mention a 911.
What year is your 911? Joe
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2021 Subaru Legacy, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
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12-21-2011, 04:44 PM
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Registered
Join Date: Apr 2010
Location: New Orleans, LA
Posts: 1,493
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if you want to know for sure, get a cheap mechanical temp gauge ($18 at pep boys) and drop the sender in the oil tank.
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1982 911SC, Mocal oil cooler, Bilsteins, Carrera tensioners, backdated heat, factory short shift, Seine gate shift, turbo tie rods, pop off. 2005 Mercedes-Benz C230 kompressor sport 6-speed (daily driver) |
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12-21-2011, 04:44 PM
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Reiver
Join Date: Nov 2011
Posts: 57,476
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Joe, it's an '83 SC.
Shumicat...I know the temp at the tank, was wondering about the delta between the tank itself and the reported sender temp from the motor. |
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12-21-2011, 05:15 PM
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Member 911 Anonymous
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What kind of oil filter are you using.
When I tried the Napa Gold, due to it's high filtration it restricted oil flow and caused my temps to go up. It ay be just me but when I swapped back to Mahle, temps went to normal readings. J BTW, Use a IR reader and check the thermostat's two hard lines in the wheel well, that will give the most real time oil temps going in and out of the engine.
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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12-21-2011, 10:36 PM
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Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,965
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Draco brings up a good point. If you can, put your hand on the oil lines running up front and make sure that both are the same temp.
I have seen thermostatic valves either not open or open partially and neither is good for your temps.
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2021 Subaru Legacy, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
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12-22-2011, 03:06 AM
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Reiver
Join Date: Nov 2011
Posts: 57,476
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Thanks,
German filter, the other therm and system works fine. Just wanted to know if anyone had used the 10 degree temp diff between filter and sender as a check point or heard of that check before. I'm suspecting a bad sender reading by 10 + degrees is why. |
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12-22-2011, 07:23 AM
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Marble Grey
