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I have a 93 Pontiac Bonneville SSE, and for some reason while driving the car, the temperture, battery and the oil gage will just start going haywire. Also the features that goes withmy car will come on as well. It doesn't happen all the time while driving, but I am just wondering why those gages bounce from the left to the right like that? have anyone else had these problems? Someone told me that it could have been because I had bad gas in my car. I am not sure. Please help.

2007-04-22 11:32:47 · 18 answers · asked by bicheeeened30 6 in Cars & Transportation Maintenance & Repairs

Great answers so far from everyone. Thx for the response. Just a little info. The gages don't go haywire all while driving. It just does it every so often while driving.

2007-04-22 11:45:55 · update #1

18 answers

Okay, it's obscure, which is why no one has thought of it yet, but I've been there.

What you have is this, the alternator is grounded to the engine. The battery is grounded to the frame. The ground strap that goes from engine to frame is broken and occasionally loses connection, and the only way the current can get from one spot to the other is...through the gages.

Look for a heavy wire, from the motor to the frame on the passenger side usually. Tighten the connections, or if the wire is bad replace it.

2007-04-22 12:16:16 · answer #1 · answered by oklatom 7 · 2 0

If the way the car feels doesn't change when that happens then it is an electrical problem.

It's an older Pontiac and you can expect things to start going wrong with it faster than you can keep up with it.... but for now it just sounds like an electrical problem.

I didn't find anything on a '93 Bonneville with electrical problems, but I did find a '94...

2007-04-22 11:41:30 · answer #2 · answered by jninjacash31 3 · 1 1

I believe that make and year has computer chips. Since you say so many things go haywire at the same time, I would take it to Auto Zone (or whatever auto parts stores you have nearby), and they can put the car on a diagnostic machine, usually for free. But call and ask first if it's free.

Good luck.

2007-04-22 11:37:53 · answer #3 · answered by class act 4 · 1 1

I'd start with shock absorbers or struts, depending on your car. If your car has more than 60-75,000 miles this would be a good starting point. Shocks and strut performance starts to deteriorate after this mileage.

2016-05-21 02:57:57 · answer #4 · answered by Anonymous · 0 0

I would thing that if the car is running OK when the guages go whacky, it isn't bad gas. It may be some kind of short in the wiring harness or some other electrical issue.

2007-04-22 11:36:57 · answer #5 · answered by the_skipper_also 3 · 2 0

I would guess you have a bad connection to a circuit board that's inside your dash. It won't be cheap to fix it at the dealer's shop, but if you can find a mechanic who's fixed the same problem before, that would be the best solution. There's a ponitac owner's website and if you search enough you'll find somebody who had the same problem and how to fix it.

2007-04-22 11:45:53 · answer #6 · answered by bobweb 7 · 2 0

There is an AMP (sensor), which controlles the gages near the radio (but it has nothing to do with the radio) and it sounds as it is shortening out.

2007-04-22 11:41:50 · answer #7 · answered by Irene S 2 · 2 0

this could be th result of a loose connection from your alternator or it could be that the computer is going out both are common problems on the bonnevilles and grand prix' grand ams in the 90s models.

2007-04-22 11:44:27 · answer #8 · answered by Anonymous · 1 1

Sounds like the computer monitoring system is malfunctioning, this is the only system that interconnects your gages and engine warning lights.

2007-04-22 11:37:58 · answer #9 · answered by cireengineering 6 · 2 0

well Bicheee, check or have your positive battery cable connection at the battery checked, they are notorious for getting corroded and having connection problems hitting bumps. while your at it check the ground also. good luck on a tough problem.

2007-04-22 12:14:27 · answer #10 · answered by Anonymous · 2 0

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