Jazz jerks and cuts out in D but not in S
Hi guys,
This is my first post, please be gentle :).
Last week I bought my missus a 2003 Jazz with CVT, 1300 cc. 180000 km on the odometer. Car is in good nick but is a pain to drive.
When engine is cold the car drives great. Once it starts to warm up the car starts to jerk or even cutting out under light throttle or going slightly uphill.
That doesn't happen when driving on from standstill but happens at the lower speeds (Around 40 to 50 kph).
It comes to the point that sometimes the engine cuts out alltogether. My missus is on her P's and it freaks her out! No MIL showing up when it happens or no "D"-flashing.
I've been reading up on the forums (I shouldn't have bought this car to start with, but now it's too late) and everything points to the EGR, coil packs or the transmission.
I removed the EGR and noticed it was in a closed position (Which it should be) and it sealed off properly. I resealed it and left the EGR disconnected. No improvement or change in driving the car.
I checked the gearbox oil and it was clean. Still I replaced the ATF (But no Honda ATF). No metal filings on the sump plug. Still no improvement, although it seems to run a bit smoother.
I also checked the XYZ-switch (Switch that determines the gearbox position) but all good (Opened it up and checked for corrosion, discontinuity, etc).
Next thing I did was to disconnect the battery and went throught the gearbox reset procedure. Still no improvement.
Coil packs can be eliminated as well because under WOT the car accellerates properly.
The funny thing is that when I drive the car is S-mode (Sports), the car seems to be running great just with the occasional hickup.
My theory is that when driving in S-mode the engine shifts at slightly higher RPM and therefore avoids shifting in the critical zone.
Could somebody give me an idea what could be the case?
I know, before you react, I should only use genuine Honda ATF and I will do that once I can find the time to visit a Honda dealer (The nearest one is 40 km away).
I have been reading up on the forums but most problems seems to be related to the starter clutch. This is not the case in our Jazz as it takes off from standstill smoothly.
I am mechanicaly minded but haven't got experience with Honda Jazz (Although that starts to improve by the minute).
Thank you for your time!