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When was the last time that the carburetor was stripped and cleaned? Also have you checked the fuel filter? Finally, the problem seems to come and go as the engine is run (and it gets hot) check that the fuel line and any electrical cables are well away from the hot engine as far as is possible.
Go to the auto parts and get a container of Heat fuel treatment and get a new fuel filter also. Then pour in the proper amount of fuel treatment and change the fuel filter. This should fix your problem. Also when was the last time you changed the air filter. This would help it run better and increase your mileage.
So, here's what you have to do - it's a frikkin tranny reset!!
Drive in manual mode M5 for 5 minutes at over 60MPH, then switch it to
M6 for 1 minute, then back to M5 for 2 minutes, then back to auto.
Note: the car is going to sputter continuously when you have it on M5 for the 5 minutes.
That was it - drove around for 30 minutes afterwards and no issues what so ever!! Unbelievable!!!
I have a 1990 Buick Century with 3.3 v6. My car would sputter and the check engine light would come on and off while driving and the car would die when I came to a stop and tried to take off. I noticed my cooling fan turning on and off even when the car was not up to temp, and that is when the check engine light would come on. I changed the temp sensor and all is well.
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