Okay so I have had this car for a about a week now.
Filled up at Costco premium 91 octane.
Drove a couple of days about 100km.
So yesterday I am driving on the hwy ( about 20 minutes Car is warm) in sixth gear at 130 km come upon a slight incline see a sunfire approaching from the back. Decided to give it some gas and nothing, instead I am loosing speed now down to 120.
Then as i approach a flatter surface the car takes off.
Sound of the Gear was very rough as though i was on gravel road.

Could this be the Costco gas?
or
FYI when I filled up I noticed that the Gas Cap had some oil residue. I did not premix. Could this be the problem?

Thanks

 

ALWAYS shell 91.......

 

Thanks.

I would hate to believe that Gas from Costco is bad for this engine. Cause the price is one cent more the regular gas.

 

yeah well i doubt its the best..
i dont think the gas would have an effect on your situation, but then again i could be wrong

 

fuel pump?

 

Interesting, Will have to see.
I am going to do the MAF sensor cleaning tonight for new owners and see it it helps.
I am also going to go to the dealership and see what service was done on the car if any.

 

You've got a TON of things to do if you haven't done any of the following or have not done recently by review of the maintenance records:

- Clean MAF
- Clean Air filter
- Clean interior cabin filter (the air you breath as the driver is IMPORTANT TOO!!!)
- Coils
- Plugs (manufacturer recommends new plugs at 56,000km minimum, you are near this)
- Wires
- BG44K can into gas tank
- Reset fuel trims (20 brake pedal stomp)
- Differential fluid change
- Brake fluid change
- Transmission fluid change
- Oil change

 

check everything they listed above.. ive never had a problem with their gas

 

94 octance ftw but yes check that list footman provided

 

Welcome,

Check the links in my sig. Read up. The $100 DIY list has some overlap with Footman's list. Depending on the year, you want to do both.

 

Okay, Did the MAF sensor cleaning.
WoW!!!!
What a difference. Now it has no problem.
Thanks Footman,
You've got a TON of things to do if you haven't done any of the following or have not done recently by review of the maintenance records:

- Clean MAF -Done
- Clean Air filter- Soon
- Clean interior cabin filter (the air you breath as the driver is IMPORTANT TOO!!!) Cleaned.
- Coils - Soon
- Plugs (manufacturer recommends new plugs at 56,000km minimum, you are near this)
- Wires- Not Yet, soon.
- BG44K can into gas tank
- Reset fuel trims (20 brake pedal stomp) Will do once I add BG44K
- Differential fluid change- Soon
- Brake fluid change- Soon
- Transmission fluid change Done
- Oil change Done
__________________

Will have to buy Plugs Coils, Wires and Air Filter from US. So far they are the cheapest Mazmart or Ebay. Is there any place in Toronto where i can buy cheap these items for same in US.

 

Thanks 04Green. Will do as recommended.

 

Plugs, Coils, Wires as a package from RACEROOT (Brice), I've bought from him before, no problems.

Air filter, get a drop in K&N filter.

Where abouts in the GTA do you live/

 

Where can I get the drop-in K& N filter in Toronto as the dealership prices are similar to original filters..

 

the only time I used Costco "premium" gas I got a check engine light for a missfire! shell v-power ftw

 

Filled up at Costco again today. All is good for now.

 

Shell is like 138 right now and Costco is like 124 lol Costco 91 is the same as shell 87.

 

I wouldn't risk my engine just to save $5 for every tank, that's how I see it!

 

Okay guys you are the experts.
I have decided to change to Shell V power 91 for one reason only. No Ethanol.