How come majority of the H bodies cooling fan doesnt work unless the ac is on? because My car and my aunt bonneville cooling fan does not comes on. even my neighbor lesabre does the same thing. What could be the problem. I already replace the cooling sensor temps and all the fuses. The Fan works only when i strait wire it.

Will the car overheat if it is setting still and running? What temp does it get up to?

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~Randall~


1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place

her car get little over 200

That sounds perfectly normal. I know that may seem super hot, but that's the temp GM designed the car to operate at. Also remember that the stock gauges are terribly inaccurate.

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Bye Bye:

RIP sandrock

Agreed, so far it sounds about right. The fans don't even kick on low until about 210*, and they hit high at around 225*. If it gets beyond that, there is a problem. To be sure you can just let it sit there and run until the fans come on. These motors usually let you get away with temperatures of 250*, but it is not good. Check it out, let us know.

If they are not on by 230*-240*, you then have a problem. You can always get the fans to turn on to cool it down right away by starting up the A/C if it gets too far.

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~Randall~


1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place

The fans on my car didn't kick on until 210*F or so one hot summer day. They cooled the car to 195*, IIRC, then shut off.

It's easy enough to change the fan settings with a tuner.

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2012 Chevrolet Cruze Eco - Current car

1999 Buick LeSabre Custom - Former car

Learn from the mistakes of others, that way when you mess up you can do so in new and interesting ways.

Low speed comes on around the 210-212 area, High speed comes on right around 220-227...

The turn off is in the 208 area iirc...

As said with a tuner these temps can be changed..

If it actually doesn't come on, check the low speed fan relay. You can just swap it with the high speed fan relay and see if the symptoms change.

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WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights

HOw can i get the fan to come on at 195 or 200? because i hate strait wiring it

As you've already been told in this topic, you have to have your PCM tuned for it. Please read the replies above.

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Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers

No offense santonio03 but I think you are really pissing people off here.

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2000 Pontiac Bonneville SE
1997 Oldsmobile Eighty Eight LS
1993 Buick Regal GS Coupe
1992 Buick Regal Limited Coupe

*fook* those people

Then stop trying to argue with people who know what they are talking about more than you do, and stop being a smartass. Enough said.

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2000 Pontiac Bonneville SE
1997 Oldsmobile Eighty Eight LS
1993 Buick Regal GS Coupe
1992 Buick Regal Limited Coupe

Then stop trying to argue with people who know what they are talking about more than you do, and stop being a smartass. Enough said.

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2000 Pontiac Bonneville SE
1997 Oldsmobile Eighty Eight LS
1993 Buick Regal GS Coupe
1992 Buick Regal Limited Coupe

You shut the hell up. Im not being a smart ass. Im learning more about cars by being on here.. all i want is opinions. I dont know anything about cars at all. Im just comparing what you guys says on here to what people tell me at dealerships and Garages

santonio03, there is no need to act like this. All of us are trying to help you, and your attitude is not making us want to help you.

As both Jrs3800 and willwren said, you will need to have someone tune your PCM with DHP or HP Tuners to turn the fans on at a lower temperature, and you will also have to install a 180* thermostat to be able to see those lower temps.

_________________
Bye Bye:

RIP sandrock

Everyone, please keep the arguements to PM's between eachother and forum staff.

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WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights

Alright i will keep my attitude down 00beast