2004 Automatic jazz occasionally slips/jumps between 1.5 and 2.5 rpms

[guest4301]

I have a 2004 Honda Jazz with 94000 miles on it. Just recently it has been jumping/slipping occasionally between 18 and 22mph, 28 and 32mph, and 38 and 40mph. and only when I am going 1.5 to 2.5 rpms. Anything above that it is fine. It seems like when it is changing gear but I am unsure. I have flushed the cvt fluid out and it still persists. I talked to the Honda garage and they told me it would be £10000 to replace transmission. I don't know what to do I still owe money on it, and it runs fine this, please help.

[DrShockr]

Hi there

Same thing used to happen to mine at 91K. Was very worried it was the transmission then one day it lurched and totally stalled on A-road, luckily the engine management light had come on. The code pulled showed it was a bad crankshaft sensor, spoke to my local independant garage who told me to order the part from Honda and he'd install it. IIRC the sensor cost £68+Vat. He only charged me £10 for installation. Car has been right as rain sinse.

Hasan

[chrisc]

Can you connect the car to an OBD-II diagnostic machine anywhere?  I think your Honda garage was just taking a guess.  Always check the simple things first, as the above post suggests

[guest4301]

I keep getting reply's on other forums about jazz's shuddering when taking off, but that isn't what mine is doing. Would a diagnostic work if there is no fault light on the dash? I originally thought it was the transmission but the more I drive about it the more I drive it the more confused I get. I am hoping it is the IIRC sensor, or maybe the spark plugs need to be changed. I have also read about the ECG valve causing problems. Thank you Hasan yours is the best information yet, I hope it works will let you know.

[DrShockr]

I keep getting reply's on other forums about jazz's shuddering when taking off, but that isn't what mine is doing. Would a diagnostic work if there is no fault light on the dash? I originally thought it was the transmission but the more I drive about it the more I drive it the more confused I get. I am hoping it is the IIRC sensor, or maybe the spark plugs need to be changed. I have also read about the ECG valve causing problems. Thank you Hasan yours is the best information yet, I hope it works will let you know.

IIRC = If I Remember Correctly ;-)

The actual sensor was the crankshaft sensor.

Do let us know how you get on.

Hasan

[guest4301]

Hello all,
      Since my last reply I have cleaned the EGR valve and that seemed to do the trick. I also replaced the Sparkplugs but I drove the car after I cleaned the EGR and it felt much better. Now I am pretty happy she is running like a beaut, but I am a bit pissed at the Honda garage I took my car. They charged me £70 for their expertise and a diagnostic and proceeded to tell me it was my fault for putting dexron III transmission fluid in when it clearly states in my owners manual that it was a suitable substitute. It said nothing about a CVT transmission. Then they tell me I have to get it flushed for another £150 and it could make it worse, and if that didn't fix it I would have to get a new transmission for £10,000. Is that not insane, a new jazz only cost £12,000. I just feel they didn't care and only wanted me to pay for services I didn't need. Now my dilemma is to figure out how to go about this.
Any way thank you for all your help fellas.