Question about 1997 Buick Riviera

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Outside temperature gauge for my malfunctions

Sometimes the outside temperature gauge for my 1997 Buick Riviera malfunctions. It will read temps way off. If it's winter, the gauge can read 75; then the heater/defroster will not turn on.

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The problem is a bad ambient air temp sensor or a broken wire to that sensor. The sensor usually is located in the front of the engine bay on the support for hood latch, between the outer grill and the radiator/condensor assemblies.

Posted on Jul 22, 2009


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The low side reading will usually correspond with the dash temp,45 lbs at low side should equal 45 degrees f at the dash with a medium fan speed and 70 to 80 degrees f outside temp with a good air flow through the condenser.(fan placed in front of vehicle).

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i dont know how accurate your gauge is, but a lot of gm cars that i have scanned to check fan operation didnt kick the fan on till about 220 degrees. it seems yours is probly working fine. the thermostat isnt fully open till about 200 degrees if its a 195

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On my 1998 Buick Riviera the outside temp display is not correct. How is this repaires

There is usually a Air Temperature Sensor Probe located in the front of your car, close to or under the Radiator that senses and reads the ambient air temperature. The probe could be dirty or bad, try cleaning it first with a mild cleaner, if it still is not working correctly, replace it.

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1997 Riviera: fuel guage doesn't read correctly...

May sound strange but sometimes, a fuel additive\booster can help this problem, if it is caused by corrosion of the in tank sensor and it is an intermittant problem.

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95 buick riveriera

I had this problem with the steering column. It had to be replaced! Had a hard time locating a replacement...2 weeks/$580 part/intallation. Good Luck.

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Heater is weak

a couple likely causes:
1: the engines thermostat is stuck open preventing the engine from warming up quickly. If the engine temps read normal (warm) but the heater is still cool, then....
2. the Heater control valve (a valve that prevent hot water flow when you dont want it), may be clogged or malfunctioning. this is typically located on the heater hoses between engine and firewall.

Dec 24, 2008 | 1997 Buick Riviera

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