Hi all, I have noticed that my rad fans do not come on at all, I was reading somewhere that I can bypass the radiator switch to see if the fan motors are the culprit. I cannot locate said how to. Can someone give me guidance, or point me in the right direction? Regards
How about: go to radiator switch with screwdriver (or paper clip or similar) and briefly short the two terminals whilst ignition is on and wires remain connected
Yeah, How about that, LOLOL Should of thunk this one through first before asking,,,,,,,,,,,,,,,,,, Regards
The switch I think is located on the radiator. It is on 308. According to 328 parts diagram bottom center inside part of radiator (facing driver) Sent from my iPhone using Tapatalk
Yes, what Jimmie said also just an idea, I always leave like a 2" jumper wire with a spade terminal on each end and leave it in the trunk just in case
A previous owner fitted a micro switch under the dash so I can turn on fans if needed. Very handy!!!!
Maybe they have not NEEDED to come on. If the system is in good condition, the 328 has more than enough cooling ability to handle anything the car can possibly encounter. Are you saying that no matter how long it sits at idle or in hot weather bumper/bumper traffic the fans do not activate and the temp gauge continues to rise to max? If you are driving along at speeds much above 15-20 MPH, with the AC off, the fans on a 328 may never come on at all because they are not needed. What is the temp gauge showing when you are concerned about the fans not running?
"Brian Harper" had a cool suggestion of rewiring the light in the instrument cluster which shows when the heater fans on to show when the radiator fans are on instead. Not sure he ever did it.
I did that mod almost 20 years ago. Yellow lite in the corner tells me when the fans kick on. Very easy and reversible.
I was asking because I was bleeding the system after I did the cambelt change out. During the bleeding procedure, the water pump belt came off and the engine temperature started soaring and I shut off the car, but at no point did the radiator fans come on. The car never even comes close to overheating during regular driving. It has a hard time even reaching 195 degrees during regular driving. Regards
It would be logical that the fans didn't come on. Without water circulating due to no water pump action hot coolant never reached the radiator hence the switch didn't turn on.
I have never reached 195°F (90°c) in "regular driving" in the eight years I have had my 328 GTB. In normal conditions, the car operates with the needle at exactly "a hair" before the middle mark, which is 75° Celsius on euro cars, so it must be 74°C, aka 165° F. The only condition when it goes "slightly above" is on highways at 110 kmh when it sometimes go to 77/78°; but not always. In the traffic, you would really need being stopped into a congestion for the fans to kick in. In "usual city traffic", that is: "waiting a minute or two at a red light, then going to the next red light, then waiting a minute or two, etc..." the fans do not come in. Same for the 328 GTS, except that the needle is staying on a lower number, about 70° C or 160° F. Numbers are indicative only, because we all know that these gauges are not "precise to the degree". Rgds
Oh sorry. I'll try to be more careful! I had an XKE back in the day and also wired up a fan switch for heavy traffic days.
Lol you want to talk about self thrashing please read my thread on "steering woes and wow". Don't know if it was self mutilation or masturbation but I totally thrashed myself.
RIGHT! As far as the fan sensor could tell, the water temp in the Rad was essentially ambient air temp.
