Technical Loosing Power when Stopping

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Technical Loosing Power when Stopping

LFC2003

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Hi All,

Recently bought a 06 1.2 petrol grande punto for my first car, loving it so far :)

However, I’ve been been experiencing an issue where the engine cuts out when coming to a stop. The issue is intermittent and only appears to happen when the engine is warm. The best way i can describe it with my little knowledge is that the revs appear to drop too low, causing the engine to cut out. The car has been serviced, has had a new lambda sensor, and the throttle body has also been cleaned. My local mechanic had a look at it today and said that he couldn’t see any faults but did suggest that although he could see nothing wrong with it, the puntos often get dodgy throttle body’s? Just wondering if anyone had any experience with this and could shed some knowledge. Sorry for being a pain and Thank you so much in advance
 
Please have a look at these forums first, because many threads of similar subject exist already. Also you could end up being a part changer without fixing the fault.

So it stalls when you have clutch and brake pedal on the floor when stopping or do you let the car stall on gear? It's your first car and many beginners may have some bad habits. On higher gears it's normal for a car to stall if the revs drop too low.

If it was the first option, you could have malfunctioning engine coolant temperature sensor. Sensor live data would give you a hint. Also you could clean the map sensor.

And of course the car was serviced with new spark plugs and new oil and so on.
 
0. To some extent it's a "normal" thing in Grande. ECU software issue in first couple years of production (so 2006 -> 2010-ish typically).
But some things will make it more pronounced (extreme example is alternative fuel system like LPG - it's like exact opposite of "rev. hang" problem in some modern cars, Google that).
1. Valve clearances. Most neglected thing ever in 8V engines.
2. Timing belt and/or VVT (and this one is related to engine oil and pressure).
3. Ignition system.
4. Exhaust system (leaks, starting at manifold, studs).
5. Fuel system (low pressure).
6. Sensors, starting at pedals (clutch and brake has "limit switch" and ECU uses those signals to control the engine), then other (MAP, temperatures, lambdas).
7. Intake (vacuum leaks or restriction, air filter). Plus "breather hoses" (PCV system).
8. Clutch is worn out, failing.
9. Throttle has nothing to do with it (unless it's completely trashed). Or it's the last thing to worry about. Just keep it clean.
10. Inexperienced drivers. Doing weird things like gear reduction from 2nd to 1st (there's no purpose in doing that). Inappropriate gears and RPMs and clutch and gas pedal reckless operation. You can stall any car (and blame the car).

PS
Next time SEARCH before posting new thread, there are multiple ones on this issue. Note, there is no "solution" (you just make the car driveable with no stalling), just do the real maintenance (don't skip any point from the list above) and you should be OK.
Plus Guides section: https://www.fiatforum.com/grande-punto-guides/
 
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