Fuel Response Options

[6G96GT]

I had a diagnostic and full service inspection on my Celica done from a local Toyota Dealer. It passed with flying colors so I know there's no large concerns at hand that would cause my car to have a fuel issue. Anyway, here's my issue:


Whenever I am driving around (city driving that is), right after I shift and then press the accelerator pedal, my car lightly hesitates, it's not a smooth transaction kinda deal. It started happening about 3 or 4 months ago but now it seems routine. Doesn't matter what gear I shift into either. It's a very light (but noticeable) hesitation (under normal driving). If I were to accelerate it hard, there's no issue at all. Only when normally driving and shifting. By the way, I shift gears when I reach 2.5K - 3K RPM under normal driving.

I really don't want to pay a mechanic to spend hours troubleshooting if I can help it. What would cause this issue?

This post has been edited by 6G96GT: Sep 21, 2009 - 1:54 PM

[6G96GT]

Good info, thanks guys! Well, I run top grade fuel and have been since I bought it almost 2 years ago. My oil is at the correct level and my oil pressure is good. I have an SRI with a fairly recent air filter which is still clean. I haven't checked my spark plugs yet and it's been about a year since "I" did.

It only happens on the first press of the gas pedal right after I switch gears. Maybe a second long. It's not really a big issue but it's definitely one that bugs that he!! out of me. I did try switching gears at the rpm range that Blu94gt recommended and it does help but it still has a slight hesitation about it.

I also used Gumout Fuel Additive back in the early summer and then had a check engine light about a week later but my mech said it was questionably bank 2 oxygen sensor and so I replaced it and the check engine went away. It does come back on from time to time but never stays on for more than a couple seconds here and there.

This post has been edited by 6G96GT: Sep 22, 2009 - 6:41 PM