Ok I belive this to be two seperate issues, but they just started in the last week. I have 2004 Saturn Ion that when it runs idle and the AC is off it seems normal. However when I turn the AC on, and when I hear the AC mortor/Compressor start up, the car revs up to about 1500 RPM and then comes back down. Any ideas on what it might be?Second issue started today. The car began to overheat, it almost got to the red gauge then came back down to middle as i was driving. When i got it home, I checked the engine, and the coolant resevoir is full, the oil is good because i recently changed the oil 3 days ago. I let it cool down and started it up again, and it started to climb again, but it did not get all the way to the top, it fluctuated between 3/4 and middle slowly. I noticed that the radiator fan did not kick on once, and i checked the top and bottom hoses running to the radiator. They were both hot. Any ideas?
I have 2004 Saturn Ion that when it runs idle and the AC is off it seems normal. However when I turn the AC on, and when I hear the AC motor/Compressor start up, the car revs up to about 1500 RPM and then comes back down. Any ideas on what it might be? ANSWER This is normal. The AC take a kick to get it going. The engine compensates for it by giving it a little more horse power. once running it does not take much to keep it going. Second issue started today. The car began to overheat, it almost got to the red gauge then came back down to middle as i was driving. When i got it home, I checked the engine, and the coolant reservoir is full, the oil is good because i recently changed the oil 3 days ago. I let it cool down and started it up again, and it started to climb again, but it did not get all the way to the top, it fluctuated between 3/4 and middle slowly. I noticed that the radiator fan did not kick on once, and i checked the top and bottom hoses running to the radiator. They were both hot. Any ideas? ANSWER All cars do this. It takes the car to heat up to the thermostat temp. before it opens. once opened the car temp comes down to about 175 - 190 degrees. But it does take about 200 - 210 degrees to open the thermostat. You just never noticed it before.
