General Running rough

[tinymartin]

Hi all, I have a 2019 Fuat Ducato that runs rough and has a misfire or hiccup at around 2200 rpm. When I start the van and its cold it runs roughish at idle and has a bit of white exhaust type smoke coming out. Then when I rev up to around 2200 rpm it's as if there fuel starvation and you can't really rev up and it starts to die until you take you foot of the throttle and it allowed to idle although a bit rough ( There is a bit more smoke as i do this). When you put full down from idle it manages to get pasted the hiccup. You can play around with the throttle and you can past that point and it revs OK from there. When you warm the engine up the smoke gets better and so does the running although there still a problem around 2200 rpm. This is all done with the vehicle stationary because if i tried ti drive id struggle to make it 100m ish. I've removed and cleaned the egr system, visually checked and moved the throttle valve and it doesn't stick, i also cleaned the MAP sensor. There is no other faults like earth cable or wiring that i can see. There are no fault codes or warning lights if anyone can help it would be great.

 

[theoneandonly]

Two thoughts
as a twin egr model how clean is the exhaust pipe. wipe it with a piece of kitchen roll, is it clean ,sooty, oily.
Sounds like turbo not kicking in. the little diaphragm in the turb osolenoid is punctured or torn, is the turbo solenoid working?
have you got Multiecuscan? it will make life a lot easier to suss whats going on.
eg

Turbo solenoid test

This discusses the option to test the (turbo solenoid)boost valve in MultiEcuScan.

www.fiatforum.com

]
included in this is a link to the guide how to change the turbo/boost solenoid

What software/ hardware do i need to read OBD2 Codes

This a much bigger question than first appears. If we limit it to what is a cost effective DIY solution to "read my Fiat and simple maintenance issues eg change the oil in my euro 6 or add a new MAF sensor" then the answer for me reduces to...

www.fiatforum.com

 

[tinymartin]

Two thoughts
as a twin egr model how clean is the exhaust pipe. wipe it with a piece of kitchen roll, is it clean ,sooty, oily.
Sounds like turbo not kicking in. the little diaphragm in the turb osolenoid is punctured or torn, is the turbo solenoid working?
have you got Multiecuscan? it will make life a lot easier to suss whats going on.
eg

Turbo solenoid test

This discusses the option to test the (turbo solenoid)boost valve in MultiEcuScan.

www.fiatforum.com

]
included in this is a link to the guide how to change the turbo/boost solenoid

What software/ hardware do i need to read OBD2 Codes

This a much bigger question than first appears. If we limit it to what is a cost effective DIY solution to "read my Fiat and simple maintenance issues eg change the oil in my euro 6 or add a new MAF sensor" then the answer for me reduces to...

www.fiatforum.com

When I check the egr with diagnostic tool I get "negative response 0x21" I think the egr is electric and not sure it's working? Also where is the turbo/boost solenoid How do I check both the egr and boost solenoid?

 

[theoneandonly]

location and how to change

Turbo solenoid replacement

Words of Wisedom originaly from post by Fredastaire Open the bonnet. Now look behind the Dytech box to see a black painted drop bracket. Bolted in front of this bracket on rubber cotton reel antivibration mounts is...

www.fiatforum.com

with multiecuscan
how to test

Turbo solenoid test

This discusses the option to test the (turbo solenoid)boost valve in MultiEcuScan.

www.fiatforum.com

without multiecuscan



The egr valves on a twin egr are electricaly operated unlike earlier vacuum operated
For egr testing
using Multiecuscan there are PIDs to measure desired and actual opennings of the egr valves HP and LP.
multiecuscan is a very useful and high level tool when dealing with Fiats
The egr valves on a twin egr are electricaly operated unlike earlier vacuum operated


How clean is the exhaust? clean sooty oily