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Old 20-06-2007   #16
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Re: 1.9 jtd loss of power

EGR is controlled by air flow meter,at idle it should be 1% but if you blip the throttle it will open and stay open for around one minute before returning to 1%.

Alot of people run without EGR,basically its a 'moral' issue.EGR prevents (by reburning) harmful NoX gases being released into the atsmophere,the second reason for a EGR is to lower cylinder temperature.
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Old 07-01-2008   #17
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Re: 1.9 jtd loss of power

Blanked off EGR valve and the vehicle ran a treat. Replaced EGR valve and all is spot on. Many thanks for the info, great site.
Thanks bazza660 thanked for this post
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Old 07-01-2008   #18
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Re: 1.9 jtd loss of power

You welcome...but forum is expensive to run but every few quid helps

https://www.fiatforum.com/donations.php
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Old 15-01-2008   #19
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Re: 1.9 jtd loss of power

Guys

I am having the same problem,i am going to start with the MAF sensor but if it`s not that

what is the best way of blanking off the EGR valve to check if thats what is causing my problem

and i also have to say "Great site" run by people who know there stuff.
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Old 16-01-2008   #20
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Re: 1.9 jtd loss of power

can anyone help me out before i start stripping stuff off that i dont need to
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Last edited by bazza660; 16-01-2008 at 03:03.
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Old 16-01-2008   #21
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Re: 1.9 jtd loss of power

Quote Originally Posted by bazza660 View Post
can anyone help me out before i start stripping stuff off that i dont need to
If you do an advanced search for 'EGR' in the Doblo section there are quite a few threads on this subject.
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Old 18-01-2008   #22
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Re: 1.9 jtd loss of power

Well i had a go at it today but i could not get a couple of the bolts out

I did manage to blank it off to check it is the egr that is causing the problem

and sure enough power had returned,i am going to try it again tomorrow.
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Old 19-01-2008   #23
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Re: 1.9 jtd loss of power

I managed to get the stuborn bolts out today

stripped and cleaned the egr

all refitted and is now working fine

Thanks to the two guy`s that sent me the info

thanks again

Bazza
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Last edited by bazza660; 19-01-2008 at 23:00.
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Old 21-01-2008   #24
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Re: 1.9 jtd loss of power

im now having this problem only my stilo is undriveable i stalled it today and now it wont go over 20mp there was no engine light on at all i had a quick look at the maf and the and disconnected the egr tried to drive and still the same plugged the egr back in and now its saying engine fault and the engine light is staying on....... anyone any ideas as im pissed right off having no car and looking like its gonna cost hundreds
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Old 29-01-2008   #25
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Re: 1.9 jtd loss of power

I've been having this hassle with a lack of power for about 2 months now. I have paid 3 different garages to diagnose the problem. I have fitted a new egr and have been quoted 140 for a new MAF. If this doesnt clear the fault where do i go next. Thanks for the info tho, good to know its not just me.
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Old 29-01-2008   #26
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Re: 1.9 jtd loss of power

split pipe on wastegate
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Old 03-02-2008   #27
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Re: 1.9 jtd loss of power

Just reading through this, i would suggest that the initial poster had the fault incorrectly diagnosed as an EGR valve fault will put up fault codes reguarding the mass air flow sensor and air temp sensor both open circuit which typically you would replace the maf sensor being both sensors are included within the maf

Also agree with T14086 about the split waste gate hose after having a few over boosting caused by the extreeme angle the vac hose runs between the actuator and solenoid, the vac pipe rips off at the actuator end on the turbo. Typically you will find if you hold the revs upto the limiter and it over boosts it will no longer allow you to rev above 3k and place the mil light onto the dash, leaving an over boost code in the system
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Old 31-03-2008   #28
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Re: 1.9 jtd loss of power

high guys. have changed my mass sensor and egr but although power loss not as bad,still got miss in low revs and heavy smoke.is this a timing problem or maybe an injector?iam also getting warning that glow plugs are u s , could this have an effect?
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Old 31-03-2008   #29
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Re: 1.9 jtd loss of power

helps telling us what engine/year your car is
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Old 03-04-2008   #30
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Re: 1.9 jtd loss of power

my doblo is having problems with loss of power also.

its a 1.9 JTD . was driving along normally and all of a sudden the EM Light came on, with a noticable decrease in power, felt like the turbo wasnt working.

Left it to sit for an hour or so, and it took absoultely ages to get it to start, must have cranked the engine for about a minute before it fired up, when it ran the EM light wasnt on, but obviously there was a problem with it as it kept cutting out when i tried to pull off and put the engine under load. the engine would run fine on tickover.

T mentioned something about the wastegate pipe. any information on where this is to be found? pic would be nice if possible.

On another note if T does see this,
Before christmas i had a dodgy batch of biodiesel, i had to siphon it all out myself through the fuel filler using a siphon kit. I suspect that i may have damaged the fuel sender by doing this, as when i had drained the tank completely (ie. sucking air, and with ignition on can hear the fuel pump sucking air) the fuel guage showed 1/4 of a tank still. just wanted to know if the sender was anywhere near the fuel filler pipe, and if it could be damaged this way.

many thanks , Jon
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