I have a 2000 Toyota Celica that is running terrible. The car putters, stalls out and doesn?t want to accelerate. The O2 sensors constantly go bad and all three have been replaced along with the catalyst converter. There is not chance that the vehicle received less then 87 octane of gasoline. What could be the problem?

SOURCE: fuel pump for 2000 toyota celica

Yes, remove the rear seat cusion and then lift up the padding. Take the screws out of the cover and them you can access the top of the fuel tank and remove the pump and fuel level sending unit.
Very easy!

SOURCE: car wont pass smog.

Is it running rough? Is the check engine light on?

Harvey N Tawatao

• 3854 Answers
• Posted on Jun 12, 2009

SOURCE: What is the recommended octane rating for my 2002 Toyota Celica?

You have a high compression ratio engine and it's recommended to use 91 octane. You can get away with the 89 octane, but the higher the better for the engine. Less chances of detonation (Engine Knock), Take note that it's best to keep faith full on servicing the Engine for Oil and filter changes. Good luck and keep me posted, be glad to help.

Ned C Cook

• 3433 Answers
• Posted on Aug 22, 2009

SOURCE: From 95 octane to 93 octane

YOU SHOULD BE ABLE TO USE 87 OCTANE. yOU ARE WASTING MONEY ABOVE THAT. Sorry bout caps.

SOURCE: P0420 and P0430

The AF sensors are uupstream and the O2 down stream. The car' s computer tests them and it is saying your cats are bad. If you have a scan tool you could look at the data and see what the sensors are seeing. The Af sensors are the ones that control the fuel ratio in the car while the O2's just watch. AF's would be the one to change but there is no garuatee that the codes won't come back.