Shuddering on acceleration

[bwilson4web]

Originally Posted by matthis

cleaned the throttle body, and added injecter cleaner to the fuel. There was an instant improvement from cleaning the throttle body but the problem is still there although less extreme. The problem is now most noticable when stopped in P or D while the HV battery is charging. I'll move on to the ignition coils next!

There is a throttle position sensor, a pair of dual-pots. The NHW11 is notorious for having 'dirty wipers' in the wiper-based, position sensors and this can cause all sorts of grief.

Good Prius friend Hobbit posted a web page on opening one and cleaning. I don't have the URL handy but someone may be able to point you to the page.

Removing and cleaning the throttle body and position encoder is not that hard ... with a Dremil tool, alcohol swabs and a little JB Weld ... probably a 2-4 hour job and a lot cheaper than a replacement throttle body.

GOOD LUCK!
Bob Wilson

[matthis]

After cleaning out the coils theres still some problems with the car so i want to replace coils 1 and 2, the existing ones are 'Denso 90919 02229' but I haven't been able to source these. As far as i can gather the engine in the NHW10 and NHW11 is 1NNZ-FXE. Do yo think I could order coils for a NHW11 and use them for my NHW10?

[bwilson4web]

Originally Posted by matthis

After cleaning out the coils theres still some problems with the car so i want to replace coils 1 and 2, the existing ones are 'Denso 90919 02229' but I haven't been able to source these. As far as i can gather the engine in the NHW10 and NHW11 is 1NNZ-FXE. Do yo think I could order coils for a NHW11 and use them for my NHW10?

They should be identical to the:

• Echo
• Scion, 1.5L series
• NHW11

Does the symptom follow the coils (aka., swap with 3 and 4?)

Bob Wilson