Register Login
Mr FIAT - Your #1 source for vintage car parts
Reply
 
Thread Tools
Old 27-08-2017   #1
Join Date: Aug 2017
Posts: 6
Thanks: 0
Trader Rating: 0
United Kingdom 
Fiat Doblo 1.3 M-Jet no acceleration

Hi
Fiat doblo active m-jet (2006 40K), as of last week Engine Warning light has come on, acceleration is V.slow and it's won't do more than 3000rpm.
I've taken it to a local garage and they seem to be unable to fix it, eventhough it's given them the error codes: p2002 & P0236

I've looked on this site and it seems to be a common issue.
Can someone ( who has experience of this problem and this problem only!), please share some wisdom as to how the problem was diagnosed and resolved?

Pls no ramblers
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

doblodevil is offline Reply With Quote Quote 
Old 27-08-2017   #2
Join Date: Feb 2004
Location: Faringdon, Oxfordshire UK
Posts: 6,026
Thanks: 471
Trader Rating: 1
portland_bill has donated!
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

Does your vehicle have a particulate filter? (DPF) This is what P2002 refers to.
P0236 relates to turbo boost pressure. This may be an issue, or may be related to the DPF.

The DPF needs to regenerate regularly. For this it needs the engine hot and running at a constant speed. When it senses this it will flash the engine warning light as it is carrying out the regen. During this time it is recommended that the engine not be turned off.

If you do short runs, or lots of stop/starts, it cannot regen. It should then flash the light requesting a forced regen. If left, it will eventually shut down into safe mode, which seems to be what you are experiencing.

There is a method of forcing a regen, hopefully explained in your handbook. Read it several times before carrying it out. It involves the engine running at a fast idle for 10-15 minutes, so when and where needs a good choice. If the exhaust points down, it is possible to melt a bit of tarmac.

Fiat diagnosis is best done with MultiECUscan software (MES). Search the forums for more info. This needs a PC and some cables, but there are a few people on here with it, so if you update with your location, someone local may offer help. MES can force a regen.

If it goes too far, a replacement DPF may be needed, but let's not go there just yet.
__________________
13 years motor trade, 16 years motor industry. 14 years Driving Instructor & 7 years Fleet Trainer
Panda Alessi
portland_bill is offline Reply With Quote Quote 
Old 27-08-2017   #3
Join Date: Jan 2012
Posts: 421
Thanks: 0
Trader Rating: 1
United Kingdom 
Fiat Doblo 1.3 M-Jet no acceleration

The DPF or EGR would have been my suggestions

Remember them well from my punto days
__________________
tempz is offline Reply With Quote Quote 
Old 27-08-2017   #4
Join Date: Feb 2004
Location: Faringdon, Oxfordshire UK
Posts: 6,026
Thanks: 471
Trader Rating: 1
portland_bill has donated!
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

Forced regen procedure. This is from memory, so may not be correct. Hopefully someone will agree or correct it.

Get engine warm.
Stop engine.
Open bonnet - to allow heat to escape, it gets very hot in there.
Press clutch and accelerator fully and hold down.
Start engine.
Engine should gently rev to about 2-3000 rpm and hold, while DPF light flashes.
Wait. Neighbours will wonder why the noise, and smell, and smoke, and why the road is melting.
After 10-15 minutes, revs will gently drop back to normal idle and light goes out.
All done, should be OK.

Royal Mail run a lot of Doblos. They should have a laminated card in the glovebox with regen instructions on it. This is why you will occasionally see a van sat with bonnet up engine revving. If you see a local postman with a Doblo, ask if you can copy the instructions. Worst case is they say no.
Likes CheekyBastard liked this post
__________________
13 years motor trade, 16 years motor industry. 14 years Driving Instructor & 7 years Fleet Trainer
Panda Alessi

Last edited by portland_bill; 27-08-2017 at 12:04.
portland_bill is offline Reply With Quote Quote 
Old 27-08-2017   #5
Join Date: Mar 2016
Location: Norfolk
Posts: 742
Thanks: 56
Trader Rating: 0
irc has donated!
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

Does the Doblo have the same turbo as the Panda 1.3 multijet?
The symptoms do sound a bit similar to siezed actuator. If you don't have a DPF, or a regen doesn't fix it, search in the Panda forum for "wastegate siezed" and have a read.
__________________
irc
Panda Sporting MultiJet 1.3 "Diesel Weasel"
Panda Sporting MultiJet 1.3 "Pig"
Panda Eleganza Dualogic 1.2 "Magic Panda"
irc is offline Reply With Quote Quote 
Old 27-08-2017   #6
Join Date: Aug 2017
Posts: 6
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

Thanks for the swift response.
I'll try the procedure later and let you know
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

doblodevil is offline Reply With Quote Quote 
Old 27-08-2017   #7
Join Date: Feb 2004
Location: Faringdon, Oxfordshire UK
Posts: 6,026
Thanks: 471
Trader Rating: 1
portland_bill has donated!
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

I think I've remembered to procedure correctly. Engine should start normally, then gently increase revs. If it tries to rev its nuts off immediately, let go.
__________________
13 years motor trade, 16 years motor industry. 14 years Driving Instructor & 7 years Fleet Trainer
Panda Alessi
portland_bill is offline Reply With Quote Quote 
Old 29-08-2017   #8
Join Date: May 2010
Posts: 2,148
Thanks: 268
Trader Rating: 0
Goudrons has donated!
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

P0236 is a fault code telling you the boost pressure signal is above it's predicted range.

What's likely is it's failing to control the boosted air and it's overboosting when the engine is under load so tripping into a safe mode thus limiting rpm.

The first thing to check on this engine is the wastegate operation.
They are prone to jamming up with carbon and seizing in the closed position.
https://www.fiatforum.com/panda/3544...te-seized.html

P2002 is due to a discrepancy in exhaust pressure detected at the DPF and it's likely due to the safe mode/limited rpm as it'll fail to trigger or complete a DPF regen in safe mode.

P2002 is what's know as a soft code, it can occur quite often and "pend" this code (store it as a likely fault) but will only flag up it up with an engine light if it dectects the fault in repeated drive cycles, if not it'll drop it until next time.
Likes portland_bill liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Goudrons is offline Reply With Quote Quote 
Old 22-02-2018   #9
Join Date: Aug 2017
Posts: 6
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

I thought that I would update you all.
After taking the car to lots of different garages and getting random different diagnoses ( which would cost $1000s), a guy at work told me I should get the DPF drilled out and deleted


I feel slightly guilty but Runs beautifully now
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

doblodevil is offline Reply With Quote Quote 
Old 22-02-2018   #10
Join Date: Feb 2004
Location: Faringdon, Oxfordshire UK
Posts: 6,026
Thanks: 471
Trader Rating: 1
portland_bill has donated!
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

MOT rules are changing soon. Likely to fail if DPF not as Fiat intended. Sorry.
__________________
13 years motor trade, 16 years motor industry. 14 years Driving Instructor & 7 years Fleet Trainer
Panda Alessi
portland_bill is offline Reply With Quote Quote 
Old 08-03-2018   #11
Join Date: Aug 2017
Posts: 6
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

Slightly worried, but I should have enough money by then to have a new one fitted.
Also, the man that did the DPF told me that there are no visible signs that the DPF is gone and I don't have any smoke, so I should give it a try.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

doblodevil is offline Reply With Quote Quote 
Old 27-03-2019   #12
Join Date: Aug 2017
Posts: 6
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

0 DPF and 2 MOTs later. Still going strong!
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

doblodevil is offline Reply With Quote Quote 
Old 22-05-2019   #13
Join Date: Aug 2017
Posts: 6
Thanks: 0
Trader Rating: 0
United Kingdom 
Re: Fiat Doblo 1.3 M-Jet no acceleration

0 DPF and 3 MOTs later. Still going strong!
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

doblodevil is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(T) Fiat Bravo 1.4 t-Jet 150HP Acceleration problem omarliew Bravo 3 25-05-2017 18:38
(T) Fiat doblo cargo m-jet 1.9 diesel melville1967 Doblo 1 09-08-2016 14:23
(T) 2007 FIAT DOBLO 1.9 multijet lacking power and acceleration Benbasfors87 Doblo 4 11-01-2015 21:26
(G) T-JET stock acceleration Titish Grande Punto 23 26-03-2011 11:11