COOLING QUESTION,
have stock 95 riviera,v-6 supercharged. It has a 195 degree themostat(oem),works properly. Has 2 electric cooling fans(oem),work properly .Fans do not turn on until temp reaches 215 degrees. Car cruises at 200 degrees but under loads temperature rises to 215,than back to 200. Live in hill country so temp gauge fluctuates 15 degrees constantly. i want to install a 180 degree thermostat,and adjust the temperature at which the cooling fans turn on to 195 degrees. I need to know how to go about setting the fans at the 195 degree temp. If I need to install and aftermarket kit, please let me know which one. How do I set the temperature at which the cooling fans turn on?Thanks for yor answer.
2007-04-08 16:49:47 · 6 answers · asked by J.T. 1 in Cars & Transportation ➔ Maintenance & Repairs
the more than likely problem is a bad low fan relay , there are two relays on this car , a high speed and a low speed , low speed kicks in at about the halfway point on the temp gauge , the fact that both fans kick in at the same time , means that you only have high speed operation , which the pcm activates at about 215 , so check the relay for the low speed
2007-04-08 17:08:37 · answer #1 · answered by smogman 2 · 1⤊ 0⤋
There's a reason that the settings are the way they are. This is to prevent a check engine light from appearing. Running the engine too cool will play havoc on fuel economy and shorten engine life. If it isn't broke; don't fix it. This is normal for your Buick so don't replace the thermostat or any other controls with anything beside what's specified.
2007-04-08 17:06:25 · answer #2 · answered by Anonymous · 0⤊ 0⤋
This is no problem. Temp fluctuations and your engine type running a little hotter is fine. If you had an idiot light this wouldn't be an issue. I do believe the fans are controlled via the PCM so it would take a reprogram of that. I would ponder a guess you gauge is off.
2007-04-08 16:56:56 · answer #3 · answered by Uncle Red 6 · 0⤊ 0⤋
Probably the fan thermoswitch will have to be changed to one that will turn the fan on at 195.Where the switch is located in your Buick,I do not know.It could be in the radiator housing,or on the engine somewhere.Buick guys out there might know.
2007-04-08 17:04:21 · answer #4 · answered by ? 5 · 0⤊ 0⤋
Contact your Buick dealer and see if there is a lower value thermal coupler for the fan relay available for your model.
2007-04-08 17:00:38 · answer #5 · answered by Dusty 7 · 0⤊ 0⤋
you might want to look at the mix level of coolant to water in your coolant system, it is a possibility. Other than that, you might be able to get away with just going with the thermostat switch and cure the prob.
2007-04-08 17:28:37 · answer #6 · answered by 3 4 · 0⤊ 0⤋