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Getting a fault reading p0254 on my doblo 1.9d 2000

First start wont rev up second it starts and vevs up lots of black smoke

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  • Cars & Trucks Master
  • 2,620 Answers

Faulty fuel pressure regulator pressure to high.

Posted on Nov 01, 2012

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: fiat doblo 1.9 diesel year 2007. engine stop when low fuel tank

There is a possibility that your fuel transfer pump has quit and fuel is getting to your engine by gravity only. Have your tranfer pump flow rate tested. Also renew your primary fuel filter.

Posted on Mar 23, 2010

Testimonial: "i will check the fuel pump. i guess i will hear the pump start when i turn on the ignition. But - the engine also have stopped downhill(reg gravidity)"

justuscc
  • 360 Answers

SOURCE: loss of power jeep cherokee 1998 2.5 tdi

could be a clogged catalityc converter. good luck

Posted on Sep 24, 2008

SOURCE: Starts but wont rev up

i had the same problem with my 98 passat but its a 1.8t motor. i had to reflash my throttle body cuz the battery died. stupid design i guess.

Posted on Jul 30, 2008

  • 225 Answers

SOURCE: 2006 VW tdi black smoke while accelerating

Hi
The only sensible way forward is to get a list of fault codes from the onboard diagnostic system and take it from there. You could either go to a VW dealer, or if you are technically minded you could buy a £15 interface cable, download some free "VAG diagnostic software" and run it on a portable computer.
There are lots of possible reasons for the problem and guessing will not really help. If these suggestions turn out to be sound, please give my reply a "Fixya!"rating, If they do not, please hold off rating and add a comment with more details so I can try to help you further. Cheers, D

Posted on Dec 02, 2008

alicantecoli
  • 22219 Answers

SOURCE: wouldn,t start, plugged in OBDII scanner, read 2 fault codes.

what model ??what car ?? what year?? petrol?? diesel??

Posted on Mar 20, 2009

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It is a pity that you altered the settings before you did a fault code run. It may have been a simple case of faulty HO2s/o2s sensors that affect the control of the air /fuel mixture. Did you check the condition of the injectors before doing anything. Both of these result in over fuel and black plugs.

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Car starts but revs for a few seconds with lots of black smoke and then cuts out have disconected exhaust from manifold but no change


Is this a diesel TDI PD ?? If so i had the same problem with one of these TDI engines and traced it to the crank sensor signal implausable. The revs would start increasing with no pressure on the throttle, lots of black smoke and then cut out. The crank sensor wiring was at fault in this case. The ECU didnt know where the crank position was in relation to the camshaft and was guessing when to inject the fuel. Hence the black smoke ! Hope this is of some use.

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Fiat doblo 1.9 diesel year 2007. engine stop when low fuel tank


There is a possibility that your fuel transfer pump has quit and fuel is getting to your engine by gravity only. Have your tranfer pump flow rate tested. Also renew your primary fuel filter.

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