| Author | Message | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 368 Registered: 10-2002 |
Any more advice ???????????? | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 352 Registered: 10-2002 |
My 348 oil temperature is fine in all driving conditions. Though I never have seen or heard the oil cooler fan operate in any conditions. I just wanted to make sure the fan was operation. I know a lot of high performance cars have oil coolers but rarely seem them with a fan attached to them. I justed wanted to make sure the fan was working OK. Touch wood I have had no problems with my 348 as yet. | ||
| Jeff B. (Miltonian)
Member Username: Miltonian Post Number: 348 Registered: 12-2002 |
Well, I should have looked at the manuals more closely. Oil flows from the engine via the scavenge pump to the cooler, then to the tank, then back into the engine via the pressure pump. So all of the oil runs through the cooler. That seems odd to me, but I guess that's why I never see the oil temp gauge reading very high. The sending unit for the oil temp gauge is on the oil tank, near the bottom, reading the temperature of oil that has already run through the cooler. I felt around in front of the right rear fender inner liner, and I can spin the fan with my finger and I can feel the two wires that run to the switch that operates the fan, but it appears that it would be necessary to remove the fender liner in order to unplug the wires and check for power and do a "jump test" to check the fan operation. Wouldn't be difficult to do. I'm really not sure of what the manual means by the plus/minus figures for thermoswitch operation. Confuses me. Anyone? | ||
| Reiner Kaiser (Reinerkaiser)
Junior Member Username: Reinerkaiser Post Number: 88 Registered: 2-2001 |
that's why I actually took my oil radiator fan off, so the cooler has additional air throughput. with two water cooling fans and an oil cooler it's hard to imagine when the oil cooler fan would ever come on??? maybe in 120 degree weather racing uphill? | ||
| Vincent (Vincent348)
Member Username: Vincent348 Post Number: 530 Registered: 4-2003 |
I have never heard mine come on before either. It runs pretty cool even during high rpm, uphill driving. Vincent. | ||
| Jeff B. (Miltonian)
Member Username: Miltonian Post Number: 346 Registered: 12-2002 |
You know, JRK, I hadn't stopped to consider how the system works on the 348, and I have to run now, so I won't have time to check until later. There must be a thermoswitch to open the oil flow from the tank to the radiator, then another switch to engage the fan. I'm not sure I have ever heard the oil radiator fan come on in my 348 either, but it runs pretty cool. I'll be interested to do some looking tonight. Maybe one of the experts has more information? | ||
| Steve Magnusson (91tr)
Intermediate Member Username: 91tr Post Number: 1849 Registered: 1-2001 |
If the oil temp sensor is a 2-wire device, unplug the sensor and short the two wires together (key in "on" position) -- the oil cooling fan should come on. If the oil temp sensor is a 1-wire device, unplug the sensor and connect the wire to ground (key in "on" position) -- the oil cooling fan should come on. | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 350 Registered: 10-2002 |
How can I check the switch to see if its working ok?? I would like to over ride it some how ?? Any suggestions anyone... | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 349 Registered: 10-2002 |
Jeff, Thanks. I have not got the workshop manual for the F348 spyder. My oil temperature in my 348 is around the 95 - 105 degrees mark on a trackday . Normal road driving about 85degrees. I have never seen the fan blades move. | ||
| Jeff B. (Miltonian)
Member Username: Miltonian Post Number: 345 Registered: 12-2002 |
From the 348 Workshop Manual, page B75, Lubrication System. The Cooling System specs are on page B83.  | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 346 Registered: 10-2002 |
Jeff, I believe thats for the water temperature of 90 degrees C. It does not say anything about the oil temperature for the fan to cut in. | ||
| Jeff B. (Miltonian)
Member Username: Miltonian Post Number: 338 Registered: 12-2002 |
JRK: According to the Workshop Manual, the oil temperature thermoswitch closes (fan comes on) at 194 degrees F. (90 degrees c.) and opens (fan shuts off) at 176 degrees F. (80 degrees C.). | ||
| J R K (Kenyon)
Member Username: Kenyon Post Number: 344 Registered: 10-2002 |
Gents, I was wondering at what temperature should the oil cooler fan cut in at. My car is a 1994 348 Spyder European spec ? |