Need Advice - Shuddering with AC on

how many Kms your car has been driven, when was the last time you changed the spark plug ?

Also, did anyone touch/clean the spark plug just before you started facing this problem ?

few more questions:

- with AC kept on when car is driven at 2nd gear with accelerator released completely. If you suddenly press the accelerator, do you face momentarily power loss ?

- One advice, I have completed all the routine part changes like timingbelt, spark plug. and throttle body cleaning & whatever. If not, get them done first. I experience dictates that sometime these problems just vanish after routine part changes.

- My car has run just over 40k KMs.

- Need to check about meometary power loss, will get back. But I don't think there is any power loss in 2nd gear.
- No, SPs were not cleaned before the problem started, however, they were cleaned by Prerana Motors during last service two weeks back when I told them about this problem. I will be going to them tomorrow again for this. Shall appreciate any pointers to help diagnosis.

as par user manual which comes with every fiat palio, spark plugs should be changed every 30K kms. If you have not does so, then please do. spark plug would cost around 1200 from authorized fiat workshop.

however, if you are in noida, call up aashirwad motors, C-120, sector 10 noida - 9212427610. Last weekend I visited his shop and saw genuine fiat palio spark plug with fiat india pvt ltd sticker. i don't know about prices.