2007 Saturn Vue Idle Issue

2007 SATURN VUE
161,000 MILES • 2WD • AUTOMATIC
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KESHA1986
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I recently had work done on my saturn. It seemed to be running fine, but when I went to pull in my driveway the vehicle starting sputtering and losing power. Now it didn't fully die. Also when I get on the interstate between 65 and 70 the engine sputters then also. I got the vehicle less than a month ago and really love it, except for the mechanical issues I'm having now.
Jul 30, 2015 at 5:13 PM
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JACOBANDNICKOLAS
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Has the check engine light come on? Have you checked for vacuum leaks, fuel pump pressure, or the idle air control valve?
Jul 30, 2015 at 8:48 PM
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KESHA1986
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The check engine light has not come on, and I took it to a service center here and they said all test came back good. I had to change the top o2 sensor and the exhaust manifold and I also have to change the muffler and my camshaft seems to be shaky. I dont know how to test the idle air control valve
Jul 30, 2015 at 8:53 PM
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JACOBANDNICKOLAS
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The IAC is really only responsible for idling. You mentioned that the car also stumbles at highway speeds. Have you already replaced the O2 sensor?
Jul 30, 2015 at 9:04 PM
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KESHA1986
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Yes we replaced the top o2 sensor with a direct fitted one
Jul 31, 2015 at 7:33 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
I have to be honest, it will become a guessing game at this point which can end up costing much more that is needed to be spent. Do you have access to a real time scanner that you could watch to see how sensors are reacting as the vehicle is running and having issues?
Aug 2, 2015 at 8:54 PM
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