My idle was very lumpy, and sometimes the car would idle so low it was on the verge of stalling - so I found a guide on here to clean the Inlet Valve.
I went to halfords and got some carb cleaner, and cleaned the inlet valve. I then did the throttle position relearn procedure (ignition on for 1 minute etc etc).

The idle is now rock solid, and I the accelerator is smooth when I first start up.

However, I seem to have caused a problem - the car isn't as smooth as it was. It's now lumpy on the overrun - especially in 3rd, if I take my foot of the accelerator, instead of normal engine braking, it's lumpy and judders a bit.
Another problem, is if I've been in 1st gear moving along in traffic, when I let the clutch in and take my foot of the gas, the car keeps the revs up for a few seconds.

I'm not sure whether it revs to around 2k each time, or if that's just where it was when I pressed the clutch. Yesterday as I stopped outside of the drive, the revs stayed up for almost 5 seconds.

Any help or advice?! I hope I haven't broken it too much

When you say Inlet Valve, do you mean motorised throttle plate? I'm not sure which engine you have but I had something similar with a 1.2 Punto Sporting. Just a suggestion - something I've found with throttle re-learns is that they can take several days for everything to re-learn and settle down - so, give it a few more days then re-check inlet hoses for airtightness (check clamps, look for splits).

-Alex

Ah yes forgot to say - its the 1.6 petrol. I've driven quite a bit over the last few days so it doesn't look like its that. I can only think that I've just moved some of the build up, and it's sticking open sometimes.
I've ordered a throttle body from a breakers/parts store on eBay for £25, so I'll try it and see how it goes.

Throttle issue (still)

Looking for advice on my problem - here's the story. Sorry for the length of the post! The car is a 1.6 litre 3 door Stilo active.

About a month ago, I decided to clean the throttle body as my idle was very rough - constantly bobbing around from 600-800, and 600 was a bit low.

So I cleaned the throttle body with carb cleaner, and did the throttle relearn (with the ignition key for 1 minute etc etc).
My idle was rock solid after that - however, the revs would hang, especially in traffic in first gear. I'd depress the clutch and the revs would stay up for a few seconds. It also was very lumpy on the overrun, and a smooth gear change was hard.
The local mechanic took it in and cleaned the throttle body, in case there was still something in there causing it to stick. No change

I ordered a throttle body from a breakers on ebay. A few days ago I got that fitted by the local mechanic. Driving home it felt great, and the next day too.
However, driving it today, it's gone back to how it was!! :bang:

I've done another throttle relearn, in case it hadn't had one when it was changed - no help.

Short of taking it to the Fiat specialist/dealer, and paying a lot of money to get it diagnosed and fixed, I'm not sure what to do.

Any ideas anyone? The problem makes the car very tiring to drive - changing gear often results in a jolt through the transmission, and balancing between throttle on and the overrun is quite jumpy.

It appears that the new thread I created has been merged with an old one, even though they aren't really the same issue.