1991 Pontiac Sunbird Temperature gauge malfunction

1991 PONTIAC SUNBIRD
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TONYADROVER
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Engine Mechanical problem
1991 Pontiac Sunbird 4 cyl Front Wheel Drive Automatic
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I have a 91 sunbird with a 91 cavalier motor in it. I have had a new head put on it and now the temperature gauge is bouncing between cold and extremely hot like a ball bouncing up and down. I have an appointment to take it in to have it looked at on friday but I am worried about driving it in the mean time. The check engine light has come on but then went out again within minutes.....will me driving my car until i get it looked at hurt it. What might the problem be with the gauge?
Sep 8, 2008 at 1:40 PM
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RASMATAZ
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Check the engine temperature gauge sending unit
Sep 8, 2008 at 3:04 PM