2000 Echo gas problem

[patenl]

Hi,
Just taking a chance that there might be a Toyota mechanic reading this or someone who might know a solution for my weird problem.....
2000 Toyota Echo.
Maybe 2 or 3 times a week at a complete stop, when I give it gas to move I have to push to the floor and still it doesn't go, it doesn't stall and 4 seconds later it goes.....when I push to the floor there is no reving of the engine just an idle as if it would stall but never did.
I don't have a Toyota dealer close to us....this happens if the fuel tank is full or close to empty....Last year I had brought it to Toyota and they flushed the gas tank and put some stuff in it to clean it but same results.
Thought it might be a dirty fuel filter but on these there are no servicable fuel filter.
By the way, most of the time I leave my house and it's ok and 1 block down at a complete stop that is when it will do this weird problem.
Any ideas would be greatly appreciated.
thanks
Luc

[patenl]

would the throttle position sensor be the cause?
Luc

[Blueberry]

Are you sure there is no fuel filter on the car? Its got to have something to do with the fuel system. The injectors or maf sensor are the only other things i can think of?

[syonra]

I had the EXACT same problem and found the solution. If you open your hood and look at the airbox, the airflow meter/air temp sensor is installed in the top of the airbox just in front of the air filter box. Remove the electrical plug and the two screws holding it in. Remove the sensor. If you look closely at the temperature bulb, you will probably find that the side facing the incoming air is completely covered with crud. I used airflow meter cleaner to clean not only the temp sensor but also the airflow meter plates up inside the sensor. After I did this my check engine light went off and the hesitation went away completely. It has been a week now and the car is doing much better. I can actually accelerate onto the freeway now!

Try this out. I bet its your problem.

Sean

[Damage82]

i would run some injector cleaner through, that is what my toyota dealer recommends. there is no servicable fuel filter, it's really a wire mesh, so nothing you can change there, i run the stuff every odd while in both our cars.

[Tazman]

I have to agree with syonra. I had the same problem with my '00 echo. From a stop sign or light, I had to pump the gas to get the revs up enough to let the clutch out. It was the mass air sensor. I had it replaced and it now runs like a top.

[stuts]

man that is some ass problem

[so_newman]

I had that problem with my '00 echo for about 1 week. A scan reveiled that I had a random miss-fire over all 4 cylinders and that cylinder 1 was missfiring. I'm burning rich. Playing with the coils proved that that wasn't the problem. So then I canged my MAFs and that didn't work. Then I changed all my spark plugs and that didn't work. I checked all my intake hoses for cracks and didn't find any. My wiring looks fine. I've run injector cleaner through the engine. Since doing that I've gotten slightly better mileage, but not sure if it is related. So around $600 dollars later, I haven't found the problem!

[Jacques254]

My first post here...
Thought I'd share what I've learned recently about the fuel delivery system in this car: Had the check engine light, with poor idling, poor acceleration (bogging when I hit accelerator), and occasional stalling at idle, which is a huge safety issue given the vacuum assist brakes and power steering.

Brought to my mechanic who found the p0172 (rich on fuel mixture). He diagnosed a failed O2 sensor, which was replaced, to no effect. After that, he recommended a new throttle body assembly thinking that the idle motor or throttle position sensor was pooched. These can't be fixed--gotta replace the whole TBA. I went to dealership, bought and installed the part, reset EFI, all to no effect. Finally, on a whim, I pulled the mass air flow sensor out (small philips screwdriver needed), cleaned it with a thimbleful of rubbing alcohol, a q-tip and shot of compressed air. Re-installed and reset compter (pulled EFI fuse B). Voila! problem solved! No bogging, better mileage, no stalling. Could have saved about $700 if I had tried that earlier. Consequently, I've got a perfectly good throttle body assembly sitting on my work bench. Anyone with similar experience?