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CTS 2005 3.6 V6
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6 Posts
Discussion Starter #1
Hi again. A few weeks ago I started my car by the morning, all was ok, but suddenly some minutes after, when I was at a red light, it started to run rough and I felt immediate power loss, and the check engine light appeared. I drove this way 3 or 4 miles away, turned off the car and 15 or 20 minutes after I got back, turned on the car again and the shaking and power loss disappeared. I got the car scanned and I got the P0302 code. So I changed the spark plugs (I installed Autolite XP iridium) but the problem persists, so I changed the cilinder #2 COP. No solution. Today I cleaned the throttle body but it has had no effect. The trick here is that once the car is at normal operating temperature and I shut it off, and restarted the problem disappears. Any suggestion??
 

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Registered
CTS 2005 3.6 V6
Joined
·
6 Posts
Discussion Starter #2
Althougt nobody answered this, I will, just in case this could be useful to somebody. The problem was the #2 injector. I bought a new one, and had serviced them in a lab. All is ok at this time.
 
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