Cooling fans

BOATINMAN57

MEMBER
1998 BUICK PARK AVENUE
3.8L
V6
FWD
AUTOMATIC
232,000 MILES

Have seen as high as 215* on digital info ctr. Cooling fans don't come on, fans run freely with 12v jumped @ u/h fuse & relay ctr, relays check good n I don't just mean they click and all related fuses that I can find (this car has 3 fuse boxes) r good. I've been advised that fans should come on when the a/c or def is turned on, they do not.I just drove this car on a 300mi. Trip on a 60*day n temp never went over 192*, now its 20*outside n temp shoots up over 210/212 when sitting still, soon as you move it goes back down to 190/195

3 Replies

HMAC300

MECHANIC
48,601 POSTS

210 is about normal on these cars. All relays for this are under hood there are 3 check parallel relay as well check ect sensor for ohms.

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Wednesday, January 6th, 2016 AT 12:28 PM

BOATINMAN57

MEMBER
2 POSTS

Re:cooling fans, 98 park ave. If a/c refrig pressure is low would that cause a/c clutch to not engage which would result in no call for cooling fans when def or a/c is on? Could be i'm jumping the gun on normal operation of fans for cooling when def or a/c isn't on. Lol. I tend to get nervous when I see temps up around the boiling point. Many thanks