Hesitation - Toyota Nation Forum : Toyota Car and Truck Forums

soloecho2 · 02-28-2011, 03:56 PM

Good day all.
Todays challange is my 2004 ECHO with 300,000 km developed a hesitation today.
This morning it was raining like hell on the drive in to work. No issues this morning on the drive in. On the way home leaving the parking lot I did not notice anything out of the ordanary. Untill I tried to make a left at a busy intersection. I had no power untill 4000 rpm then it came on like a switch.
While on the hiway if the car was loaded up in 3rd or 4th there was nothing there until about 3200 rpm again like a switch on and off. When I got home I checked the air filter, connections on the Mass air sensor, Cam control valve, Fuel injectors, Spark plug coil packs and all four spark plugs. All looked OK nothing out of the ordanary. Retested it again and the same issue slow acceleration until 4000 in first then like a swith power on.

If anyone has any suggestions please let me know ??

And no check engine light so far.

Stevo_Echohb05 · 03-01-2011, 09:04 AM

Seized caliper?

vic benson · 03-01-2011, 05:31 PM

If there is spark, then it must be fuel, maybe bad gas or fuel pump??

vic benson · 03-01-2011, 05:58 PM

Actually I just remembered that I had a similar problem with an acura I had some years ago. All it turned out to be was a hairline crack in the large rubber hose between the air cleaner and the throttle body. It was almost invisible. Try taping up the hose with duct tape to see if that makes a difference??

Vic

soloecho2 · 03-01-2011, 08:21 PM

I have never been happy to see a CEL. On the way home the CEL came on and the problem went away. No issues from work to home. I won't clear the code until I get to work to confirm it's gone. The codes set were P0031 and P0133. Both related to the O2 sensor but they say it should not be felt just post the CEL. I will reset the code at work and check again to see if the issue comes back on the way home. If it comes back on the way home should I blame the O2 sensor.

Stevo_Echohb05 · 03-02-2011, 08:56 AM

P0133 might be caused by a leak somewhere in the intake

tijeff · 06-23-2011, 01:59 PM

Same trouble about a year ago on a Toyota echo 2004 115 000 km , hatchback 2 doors, good shape, no rust. Rain/humidity seam to have played a role in this

Problem never came back since

Had similar problem on old ford festiva years befores, sprayed so wd-40 all around the motor, solved the trouble, probably electic/humidity problem on spark plugs