'98 Bonneville gauges bounce irradically and no heat. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 12-19-2005, 07:57 PM   #1
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Default '98 Bonneville gauges bounce irradically and no heat.

I tried searching with several terms and found nothing relevant to the issue I've just started having with my car. I was driving home and had heat, later on in the drive the heat stopped working. The fan was blowing air but no heat. I checked my gauges and the temp gauge was fine as well as the battery and oil gauge. Then the next day the heat started working and had no problems. But on my way home from school it worked for maybe about 20 minutes and then stopped again. This time though the gauges were moving around, the temp gauge was going up and down and the oil gauge was going up and down. The battery was reading higher than normal. I'm a girl and I know very little about what is going on and all i know is that it is freezing outside. If anyone knows what is wrong and could help me out i would greatly appreciate it. Thank you.
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Old 12-19-2005, 08:20 PM   #2
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For the heating problem 1st check the coolant level in the radiator & see if there'* enough antifreeze in the coolant .

The electrical problems could be the alternator going. Your local auto parts store will usually check this for you.
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Old 12-19-2005, 09:19 PM   #3
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Clean the ends of the battery cables at the battery.

replace them if they're cruddy.
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Old 12-19-2005, 11:01 PM   #4
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Quote:
Originally Posted by Technical Ted
For the heating problem 1st check the coolant level in the radiator & see if there'* enough antifreeze in the coolant .

The electrical problems could be the alternator going. Your local auto parts store will usually check this for you.
If coolant is low in radiator then you need to find the source of the problem. You can clear air from the heater core by reving to 3000 rpm when the engine is completely hot (including the LOWER radiator hose) for 5 times. That'* from the 98 manual for LeSabre.

If there is air in radiator or heater, do you have a bleed valve on the thermostat housing to bleed out the last air that can get trapped due to the shape of the hoses to the radiator?

I'm interested in what you find here.
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Old 12-20-2005, 01:12 AM   #5
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Post your location too, there'* probably someone around your area who would be willing to help if you'd like.
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Old 01-04-2006, 04:44 AM   #6
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Default Something simple

Thank you all for all of your help, it was just the anti-freeze being ridiculously low.
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Old 01-04-2006, 07:31 AM   #7
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There is probably a reason for the level to be low. Looking around the engine bay do you see any wet areas?
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Old 01-04-2006, 04:38 PM   #8
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Default Re: Something simple

Quote:
Originally Posted by b6e2k5
Thank you all for all of your help, it was just the anti-freeze being ridiculously low.
I agree with Bill.... This can turn into to a big problem if not caught soon?

How Low is Low? Was the overflow tank empty? Even better yet how much coolant did you have to put in the car?

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Old 01-09-2006, 04:30 PM   #9
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I looked around underneath my car and there were no leaks anywhere. So I am not sure where it all could have gone.
The overflow tank was empty and I had to put in about 3/5ths of a container of anit-freeze.
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Old 01-09-2006, 04:34 PM   #10
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Quote:
Originally Posted by b6e2k5
I looked around underneath my car and there were no leaks anywhere. So I am not sure where it all could have gone.
The overflow tank was empty and I had to put in about 3/5ths of a container of anit-freeze.
You seriously need to have the cooling system pressure tested... Sounds like you may be a Victim of a failed upper intake...

Bring it over to my house and for about $200 in parts we can fix it

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