275 gts overheating

rdb · 12-29-2007, 12:23 PM

My 275 gts is overheating. The cooling fan seems to come on erratically and not always at the specified temperature. Is it most likely a problem with the temp. sensor/switch located at the bottom of the radiator? Could it be anything else? Where can I get a replacement temperature sensor if that is what the problem is?
Thanks.
Roy

Boxer · 12-30-2007, 12:37 AM

I had the same problem in the F40. It was the temp sensor. I replaced it and have never had another issue.

I have also heard that several 275/330 owners have fitted auxilary electric fans to aid cooling in heavy traffic.

rwschumm · 12-30-2007, 01:05 PM

Quote:

Originally Posted by rdb

My 275 gts is overheating. The cooling fan seems to come on erratically and not always at the specified temperature. Is it most likely a problem with the temp. sensor/switch located at the bottom of the radiator? Could it be anything else? Where can I get a replacement temperature sensor if that is what the problem is?
Thanks.
Roy

It very likely could be your temp sensor, but also make sure you don't have any broken or shorted sensor wires or connectors. Not sure where you live, but the original 275GTB fan on mine didn't have a very good output. Since I live in Phoenix, Bill Young at GT Car Parts here sold me some higher-output fans (2) that fit well and worked better. I think they were from a later model Ferrari. Check with them ... by@gtcp.com (Bill) or dd@gtcp.com (Dave). They also should be able to help you with the sensor or anything else you may need. Good luck!

Rick

rdb · 12-30-2007, 01:53 PM

Thanks Rick. I will check the wires and connections to the sensor. If they look ok I guess I will look for a new sensor.
Roy

FERRARI-TECH · 01-03-2008, 05:13 PM

Check the operation of the fan motors manually, then as suggested it is most likely the fan switch.
One quick test to try is with the engine warm and off check the temperature of the radiator across the hole core/matrix. If the Radiator is not flowing correctly you can get erratic fan behavior because the sender unit is not getting the correct temp value. Quick simple test, and as mentioned earlier Bill at GT car parts in AZ is a good source. There are others, so if you have no luck with bill let me know I can get you one somewhere else.
Good luck

rdb · 01-03-2008, 05:44 PM

Thanks for the advice. I ordered the switch. I will let you know if that was the problem.

Boxer · 01-05-2008, 09:10 AM

Roy, I am hoping to join the 275 GTS owners ranks at some point in the not to distant future. I would appreciate any and all insights on your ownership experience, running costs, and what to look out for when buying. Thanks.

rdb · 01-06-2008, 05:46 PM

Boxer,
I have been very pleased with my 275 gts. I have had very little in the way of maintainence issues. The car had a complete nut and bolt cosmetic and mechanical restoration about 3 years and 3,00 KM before I bought it. It needed nothing. This water temp switch is really the first mechanical issue. All I have needed to do is change fluids since I bought it. The power and handling are excellent. The all-independent suspension makes a big difference compared to the 250 series cars. The exhaust note is excellent. My recommendation is buy the best example you can find. Restoration costs can add up quickly. Parts can be found but are expensive. Overall a fantastic vintage 12 cylinder ferrari.

Boxer · 01-13-2008, 11:52 AM

Quote:

Originally Posted by rdb

Boxer,
I have been very pleased with my 275 gts. I have had very little in the way of maintainence issues. The car had a complete nut and bolt cosmetic and mechanical restoration about 3 years and 3,00 KM before I bought it. It needed nothing. This water temp switch is really the first mechanical issue. All I have needed to do is change fluids since I bought it. The power and handling are excellent. The all-independent suspension makes a big difference compared to the 250 series cars. The exhaust note is excellent. My recommendation is buy the best example you can find. Restoration costs can add up quickly. Parts can be found but are expensive. Overall a fantastic vintage 12 cylinder ferrari.

Roy, Thanks for the insights. Now all I have to do is find the right one....

JazzyO · 02-04-2008, 11:28 AM

Nice to hear that my fantasy is living up to expectations. If I find the money, she will be mine!

Congrats, Roy, on a fantastic, beautifully understated car.

Onno

12-29-2007, 12:23 PM	#1
rdb Elite Member Join Date: Jul 2002 Ferrari Life Posts: 14	275 gts overheating My 275 gts is overheating. The cooling fan seems to come on erratically and not always at the specified temperature. Is it most likely a problem with the temp. sensor/switch located at the bottom of the radiator? Could it be anything else? Where can I get a replacement temperature sensor if that is what the problem is? Thanks. Roy

12-30-2007, 12:37 AM	#2
Boxer Owner Elite Member Join Date: Apr 2004 Location: UK Ferrari Life Posts: 12,792	I had the same problem in the F40. It was the temp sensor. I replaced it and have never had another issue. I have also heard that several 275/330 owners have fitted auxilary electric fans to aid cooling in heavy traffic. Boxer Current: F40, F50, 612, 430 Scuderia Past: 360 Modena, 360 Challenge, 550, 575, 365BB, 512BB, 456 GT, F355 GTS, 365 GTB/4 Daytona, 308 GTB

12-30-2007, 01:53 PM	#4
rdb Elite Member Join Date: Jul 2002 Ferrari Life Posts: 14	275 overheating Thanks Rick. I will check the wires and connections to the sensor. If they look ok I guess I will look for a new sensor. Roy

01-05-2008, 09:10 AM	#7
Boxer Owner Elite Member Join Date: Apr 2004 Location: UK Ferrari Life Posts: 12,792	Roy, I am hoping to join the 275 GTS owners ranks at some point in the not to distant future. I would appreciate any and all insights on your ownership experience, running costs, and what to look out for when buying. Thanks. Boxer Current: F40, F50, 612, 430 Scuderia Past: 360 Modena, 360 Challenge, 550, 575, 365BB, 512BB, 456 GT, F355 GTS, 365 GTB/4 Daytona, 308 GTB

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01-03-2008, 05:13 PM	#5
FERRARI-TECH Join Date: Nov 2007 Location: Los Angeles Ferrari Life Posts: 26	Check the operation of the fan motors manually, then as suggested it is most likely the fan switch. One quick test to try is with the engine warm and off check the temperature of the radiator across the hole core/matrix. If the Radiator is not flowing correctly you can get erratic fan behavior because the sender unit is not getting the correct temp value. Quick simple test, and as mentioned earlier Bill at GT car parts in AZ is a good source. There are others, so if you have no luck with bill let me know I can get you one somewhere else. Good luck

01-03-2008, 05:44 PM	#6
rdb Elite Member Join Date: Jul 2002 Ferrari Life Posts: 14	Thanks for the advice. I ordered the switch. I will let you know if that was the problem.

01-06-2008, 05:46 PM	#8
rdb Elite Member Join Date: Jul 2002 Ferrari Life Posts: 14	Boxer, I have been very pleased with my 275 gts. I have had very little in the way of maintainence issues. The car had a complete nut and bolt cosmetic and mechanical restoration about 3 years and 3,00 KM before I bought it. It needed nothing. This water temp switch is really the first mechanical issue. All I have needed to do is change fluids since I bought it. The power and handling are excellent. The all-independent suspension makes a big difference compared to the 250 series cars. The exhaust note is excellent. My recommendation is buy the best example you can find. Restoration costs can add up quickly. Parts can be found but are expensive. Overall a fantastic vintage 12 cylinder ferrari.

02-04-2008, 11:28 AM	#10
JazzyO Owner Elite Member Join Date: Feb 2007 Location: Jersey, Channel Islands Ferrari Life Posts: 4,289	Nice to hear that my fantasy is living up to expectations. If I find the money, she will be mine! Congrats, Roy, on a fantastic, beautifully understated car. Onno