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Old 29-06-2017   #1
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Throttle response is lost and engine will stall

2010 fiat Punto evo multiair 1.4 turbo 55k on the clock

Intermittently mainly on acceleration working the engine down in the revs you will loose the throttle, you still have all the electrics only thing you loose is the rev counter reading. if you leave your foot on the throttle pedal when the revs drop low anoth the engine will stall if you take your foot of the throttle the engine will recover its self. The vehicle doesn't log any faults in any ecu when checked with witech diagnostics

I have load tested crankshaft throttle body & throttle pedal wiring and replace the cranksensor.
Replaced spark plugs for fiat spec
Replaced timing belt and tensioner
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Old 29-06-2017   #2
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Re: Throttle response is lost and engine will stall

Hi.
Im unfamiliar with the multiair sequence of failure. My twinair can BOG right on the bottom.

At 55k ... a failure of the solenoid injector unit..or its seals.. cannot be overlooked.

Where are you / the car based?

Charlie . Oxford
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Old 29-06-2017   #3
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Re: Throttle response is lost and engine will stall

I am based cleethorpes which is quiet far away I work for a fiat professional dealership and I have resulted in seeking advice else where due to fiat technical not seeing a simliar issue
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Old 29-06-2017   #4
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Re: Throttle response is lost and engine will stall

Just re.read it

The rev counter is DEAD for a few seconds.

Is it at rest..as if switched off..
Or just showing tickover/idle speed..??
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Old 30-06-2017   #5
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Re: Throttle response is lost and engine will stall

The rev counter drops to rest as soon as the engine power is taken then the battery light come on due to the engine stalling
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Old 30-06-2017   #6
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Quote Originally Posted by williamsdn34 View Post
I have resulted in seeking advice else where due to fiat technical not seeing a simliar issue
Unfortunately this forum sees more 'Issues AND FIXES' than the tech helpdesk seems too
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Old 30-06-2017   #7
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Re: Throttle response is lost and engine will stall

This seams the case, so what's the fix !!
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