I am using the BP's 93 octane. I will try the Sonoco's 94 or Shell V+ Power maybe it is the fuel because it was not stalling with the fuel that dealer put. dxm8693 what brand premimum were you using when the stalling was happening?

 

I believe the batch that was giving me problems was premium from Texaco gas station, but I've been using 89 octanes from various brands including Texaco and no trouble whatsoever....

 

Both of you should be using premium. Gas stations do ocassionally sell bad gas that has moisture or suspended sediment and other stuff in it. Gas like that can cause stalling, rough idling, hard starting, etc.

I'm not a huge fan of 94 octane Sonoco. I used to live in Southern MD and had Sonoco stations all around me. The problem with the 94 octane is that it's expensive and very few people will buy it. That means it's not as fresh as their premium grade (94 is a grade above premium at Sonoco).

I always tell people to buy gas at the busiest station near where they buy gas. The busiest station will have the freshest gas. And, don't buy gas the day they fill the storage tanks because that's when sediments become suspended in the gas. If you see a tanker truck, pass on the fill up that day.

During the winter months you may have to deal with moisture buildup in your car's gas tank. This can also cause stalling, rough idling, hard starting, etc. Moisture condenses when the car travels between temperature extremes, like from a warm garage to a cold outside parking lot. You can minimize moisture buildup by keeping the tank filled. Use an additive if necessary.

 

hmm. I live in Baltimore,MD. Do you have any station you would recommend to me?

 

Anyone that does a lot of business. The brand doesn't really matter.

 

i went to the service today and left the car for 3 hours in the cold there. I was able to show them how the car trembles and makes a vibration in low rpms. The technician that drove with me told that it was a rattle and it could take a lot of time to find out. At the end of course, they could not figure it out. The service representative said that it might be the supercharger that is doing the noise. He also said that the car still has low miles therefore I should wait and see if the vibration will decrease or increase. I also told them what sleepwalker told dirty throttle valve or idle speed air valve. They said that it is not possible. I hope I will not have a supercharger or engine replacement in the future because of this problem.