General acceleration

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General acceleration

Rossa

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Hi my van will idel at 800 rpm on start up when driving and I come to a stop it will idel at 1500. While driving 5 gear 100 kph the van accelerates on its own the acceleration is instant for a second or two and then comes back to normal this will happen over and over again .changed egr no change. Any help would be great. It's an 07 100 mjt.
 
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Check / clean earth's replace earth straps if necessary. Otherwise diagnostics and check codes, reported voltage and the throttle position sensor percent when idle is high.
 
I have replaced throttle position sensor
Still have the same problem do I need to code it to the van.
Thanks
 
Have you had the van code read? This should show the fault, then you can clear the fault in the ecu, if the faulty part has been replaced, then the fault should clear
 
Read the code p2135 so changed throttle position sensor but the van is still the same. ?
 
If the fault hasn't been cleared using code reader, it may still think faulty part is there

If it has been cleared and throws warming up straight after each attempt at clearing

Then there is a further fault.
Could be wiring between throttle pedal and ECU

Wrong sensor supplied or replaced

Not had the issue myself,

What code reader are you using?

Multiecuscan in my experience is far better than a lot of independent garages equipment as it's designed for fiat/alpha
Saves miss diagnosis
 
Hi my van will idel at 800 rpm on start up when driving and I come to a stop it will idel at 1500. While driving 5 gear 100 kph the van accelerates on its own the acceleration is instant for a second or two and then comes back to normal this will happen over and over again .changed egr no change. Any help would be great. It's an 07 100 mjt.

Not sure about the higher speed acceleration, but my idle increased speed, was cured by replacing the earth strap
https://www.fiatforum.com/ducato/432614-increased-tick-over.html
 
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