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Old 15-04-2008   #31
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Re: 1.9 jtd loss of power

I need to join this club my loss of power was as follows:-

Going up a steep hill on a motorway with pedal to the metal. Suddenly I lost power. No smoke, no funny noises just felt like the turbo had fallen off! Pulled off the motorway and noticed it runs perfectly except it seems like the turbo has vanished. Took it to a garage near me and they plugged in 2 different diagnostic systems and found no fault. They checked there was boost but didn't know how much a Doblo should have - so the turbo is running at least. They had a good look for split pipes, wires off sensors and could see nothing wrong. They suggested blanking off the EGR as test of a common problem but said it might be cheaper to take it to a Fiat dealer as they might be familiar with the fault.

Before I do that as I have a deep mistrust of main dealers any other suggestions? Does the Doblo turbo have a throttle? I seem to have boost at high revs, at around 3000 rpm but below that it's now gutless where it used to pull hardest. It drives more like a petrol with a very narrow rev range!

Thanks.
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Old 21-04-2008   #32
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Re: 1.9 jtd loss of power

its a 1.9 jtd on a 2001 it has 105000 on the clock.when i unplug the mass its ok.could it be an air leak on the turbo pipes?
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Old 21-04-2008   #33
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Re: 1.9 jtd loss of power

hi just sorted the problem,it was a slack jubilee clip on the pipe from air mass to turbo causing air flow loss.spent all that time and money on egr air mass ect only to find a loose pipe.just shows you these dealers really are no good at all!!
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Old 21-04-2008   #34
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Re: 1.9 jtd loss of power

you made no mention of taking it to garage? did you pay?
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Old 01-04-2016   #35
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Question Re: 1.9 jtd loss of power

Hi, everyone, I´m new at this forum.
I own a Doblo 1.9 jtd 105 horsepower, 2008. Wich a bougth brand new.
About a month ago, the engine ligth got on. And i felt loss of power in low rpm. just until 2000rpm, wich is when the turbo get´s on. I had someone with a computer to plug in the ECU, and it gaves two errors:

401 - EGR Valve
10F - Incongruençe MAF/debimeter (I hope it´s the correct translation, once it was in Portuguese)
Then he erased the errors of the ECU.

I have dismounted de EGR valve and the MAF, and cleaned it both, ( the EGR with oven foam, water, let it dry and finaly with breakes cleaner spray, and the Maf, only with the brakes cleaner spray). And it seems to be properly cleaned.
The results howver aren´t the expected,.... it still has the same problem, the only diferençe i have notest, is that the readings of the fuel cunsumption are much biger...
The engine ligth, stays of, but car still has no power...
Can someone help me, with this?
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Old 03-04-2016   #36
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Re: 1.9 jtd loss of power

When you cleaned the EGR was the spring loaded valve moving freely?
Cleaning the chamber is only part of the process, the valve as to move freely.
Last time I did one, I had the main chamber soaking in parafin for a week and still couldn't move the valve, even with a G clamp.
The electrical part was removed so as not to be contaminated with cleaning agents, then I soaked in an aggressive ink stripper for 5 minutes and that done the trick. Valve could move under normal finger pushing pressure. That gives an example of how hard to carbon stiffens.
Another option might be to temporarily blank the EGR valve and see if that makes a difference. If it does, you can do the read ups on here and do a perminent job.
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Old 07-04-2016   #37
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Re: 1.9 jtd loss of power

Hi. Retro Pedro
The valve did move almost freely, but after the cleaning, it was moving quite ok.
I did, disassembled the valve from the electrical part, to clean it.
I did not tried to blank, the EGR yet. I´ll trie that this wekend.
Do you know if these problem, influençes the emissions, cause i must take the Doblo, to the periodical "legal" inspection. (i don´t know how to translate that to english, i live in Portugal).
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Last edited by Jomanola; 07-04-2016 at 03:11.
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Old 09-04-2016   #38
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Re: 1.9 jtd loss of power

In all honesty, I'm not sure what the effects of a blanked EGR valve does to the emissions. It is a subject that as been touched on this forum quite frequently. If you do a search (maybe google), I'm sure it will lead you to a relative thread.
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Old 09-04-2016   #39
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Re: 1.9 jtd loss of power

egr should only work ( if working) until the engine is up to temperature at low revs, after going up to temp the valve should stay closed.

a blanked egr valve should make no difference to the emissions, a faulty egr will.
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Old 04-02-2017   #40
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Question Re: 1.9 jtd loss of power

[QUOTE=richardblack;1147038]Just come back and found your comment. I didn't reallise it was illegal. I replaced the EGR (with a new one) but the engine management system calls to open it at tickover (intermittently) so it runs appallingly. Scanning it came up with nothing wrong at all so I don't know what else to do. Any ideas what sensors might be getting the management system to open it at the wrong time? It doesn't seem to run any hotter with it disconnected ie. the fans don't come on but I obviously don't know about the NOX output. I was told that it would be ok for the emissions on the mot with it disconnected. It certainly smokes much much less.
Thanks for advise.
Richard.[/QUOTE


I have a Doblo 1.9 been the garage twice now and they cant seem to find the fault sounds similar to your problem engine runs rough and pulls away jerky and lacks power but seems to correct itself after a few minutes costing a lot to keep putting in the garage with no results
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Old 06-02-2017   #41
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Re: 1.9 jtd loss of power

execgirl, If you have been told that it is illegal to disconnect or block the egr valve they are wrong. It is NOT illegal.
Also, blocking or disconnecting it does not show on the emissions test. The test does not measure the nox output.
I have blocked many egrs in the past and every time the vehicle ran smoother and with better mpg and easily pass the emissions test.
It sounds like your egr is not gummed up if it is new so try disconnecting it temporary to prove or disprove if the egr is opening at the wrong time?
Maybe the egr is fine and the problem lies elsewhere. I would have the maf checked.
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Old 12-02-2017   #42
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Re: 1.9 jtd loss of power

I have a fiat Doblo 1.9deisal I have the EGR blanked of but now the EGL is on dianostic show the air flow sensor is faulty but it was fine before this would blanking of cause this fault to show up now or should I ignore it
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Old 12-02-2017   #43
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Re: 1.9 jtd loss of power

Quote Originally Posted by execgirl View Post
I have a fiat Doblo 1.9deisal I have the EGR blanked of but now the EGL is on dianostic show the air flow sensor is faulty but it was fine before this would blanking of cause this fault to show up now or should I ignore it

before this the van had been in the garage 3 times it would blow white smoke and lack power on occasion which slowly got worse all the sensors were checked the garage found nothing wrong at all with the van but clearly there was I am worried I am doing more damage I have also been told that the blanking plate should have a small hole drilled into it to allow some sir through is this true can someone please advise me
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