engine hesitation
I have about 3600 km on my car.. bought in Canada... I noticed for the first tank or two the power on the car was great.. but now, i am noticing slight sluggish performance.. i really notice it in first gear.. sometimes i experience a 'faint' flat spot at 3000 rpm under hard acceleration. Usually in the first gear the tires are slipping a bit and really grabbing for traction.. now i notice i can pin it in first gear and it just goes 'averagely' up in rpm's.. nothing to write home about and different from when i first got it. my cel was on anyway (dealer found the thermostat broken), so i attributed it to that. since it was replaced yesterday, the sluggish performance and a little 'soft spot' was still at 3000 rpm, Although the cel was now off.. anyway, took it back to the dealer and told him the head mechanic.. we decided to test a new car and my car.. we drove both cars to feel if there was a difference.. the mechanic agreed with me that the car felt sluggish, but just barely noticable yet definetely not normal.. He said he hasn't heard anything like that before with this car and they were still learning through consumers about problems.. He asked me what kind of gas i put in i.e. brand, not octane and I put in discout carrier fuel.. i.e. centex here in calgary.. he was convinced this was the problem, as discount carriers recieve the bad batches of fuel from major carriers like petro canada (good), esso (best), shell (good but high sulpher).. as long as the 20% of the batch meets the standards, they can sell the batch to discount carriers.. this gas can be sitting for months, but as long as it meets the 20% standard, it's good to go.. but the major companies won't sell that fuel to their customers.. anyway, point is fuel apparently makes big difference.. and i plan on going through this bad tank and switching to major supplier.. probably esso.. we'll see..
as for the minor flat spot in the 3000 rpm stage in first gear acceleration, its noted on my file and they will continually look for flash updates for the ecu/pcm/ or whatever the related computer is called in my car.. could just be gas or something..