Engine shake problem

Hi,

I have got the same car that you got and it is also doing the shaking. It has not done it while driving though, but it always does it while on neutral and parked. It has been in and out of Toyota but has not been fixed as well. It has got a three year guarantee that has not run out yet and I am planning on pushing this a step forward if they are not able to fix this soon.

How is your problem? Has it been solved?

Cheers!
John

I have the same problem with Al87. I send it to Toyota to fix the problem they just clean the fuel injector. And the shaking was gone.

But after two months the same problem occurs again but it is not shaking but it ran around twenty to forty mph no more increase on its speed. When I slowly pump few times on the accelerator it comes back again in normal condition.

Can any one tell us how to resolve this problem?

I also have the same problem as Al87. Took it to Toyota, they took my money and did not fix it.

Hi AL87, did you find out what the problem was? My car is doing the exact same thing and I have taken it to Toyota more than once. They simply could not fix it after cleaning my wallet out.

Just wondering if you could give me a hand figuring out what the problem is with my car. I have a 2007 model Toyota Yaris 1.5 liter automatic. Recently the car has developed a problem where if you drive it for roughly ten minutes and then come to a stop, it violently shakes, loses all power and wants to stall. If I turn the car off and then on again it goes back to normal. Drive it around the block again and it does the same thing. I have taken it to a private mechanic who charged me $400.00 to change fuel filter, clean out the fuel tank and replace injectors with other ones with no result, it still shook when I got it back. Then I decided to take it to Toyota and when they plugged up the diagnostics computer it showed a fault with the air flow sensor. They cleaned it and it was okay for maybe two weeks but then started doing it again but was worse. I took it back, left it there for a week and they found that bank 1 was too rich, air flow sensor circuit low, intake air temp circuit high input, throttle pedal position sensor switch "d" and"e" voltage correction and then they said it was a fuel related problem but could not fix it! They charged me another $242.00 for doing nothing. The car is now at home in the driveway still not working.
I decided to look at it myself as I have a few years experience working on cars. Checked injector pulse and all four were good, checked spark plugs, all clean, cleaned throttle body and air flow meter as well. Took the car around the block to warm it up and then waited for it to start shaking. When it did start to shake I disconnected one of the plugs going to one of the coils to the spark plug and the car seemed to idle better, not sure why. If you could help me figure out what could be the problem I would really appreciate it,

Thanks, Bill from Australia.

Hey, My car is a 2008 Toyota Yaris. I am experiencing the same problem, it vibrates and goes off whenever I am in traffic or I slow down. I restart the car try accelerating it is a bit slow until it finally picks. Now the car is just going off in the middle of the road. I have changed my plugs changed one nozzle, serviced the injector, still not working. The mechanic said it is an electrical fault. Is this a problem with all Toyota Yaris? I am tired.

What could be the possible sources of engine vibrations when the car is in gear? The vibrations are not felt by sitting inside the car. The spark plugs (Denso Japan) are 20,000 Km old. Should I change them do they have any effect on the engine vibration. The car mileage is still very good.

The car engine vibrates when the gear is shifted to drive mode. In the neutral mode the engine stays calm. Throttle body has been also cleaned but the problem is still there.