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2004 Vauxhall Combo WONT START

Tiny
BLODWIN
  • MEMBER
  • 2004 VAUXHALL COMBO
  • 4 CYL
  • 2WD
  • MANUAL
  • 55,000 MILES
The combo is diesel. Fuel is getting as far as injectors but not throu them. Hence vehicle will not fire up, any sugestions will be greatley appriciated
many thanks
Saturday, March 7th, 2009 AT 9:05 AM

9 Replies

Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Hello .. thanks for the donation .. much appreciated

The cars PCM (computer) controls injector function combined with signals from various sensors on the vehicle !! you need to have the cars computer read by diagnostic scanner to locate in which part of the control system is not functioning correctly ... the PCM will generate a fault code which will tell the technician where the actually fault lies !! .. hope this helps .. let me know


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Saturday, March 7th, 2009 AT 12:25 PM
Tiny
BLODWIN
  • MEMBER
  • 5 POSTS
Hi Dave I have already used my obd scanner and no faults are present
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Saturday, March 7th, 2009 AT 1:45 PM
Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Injectors are controlled by the PCM .. if they are not working !! then the PCM should be logging a fault on this ... the PCM is supplying a pulse to the injector so the injector should be firing fuel .. if the PCM does not supply the pulse then it sets a fault code and the MIL comes on ... if the CMP(camshaft postition sensor) doesn't supply a signal to PCM to fire injector .. then it sets a fault code ... if it's not setting a code then it could be a bad PCM ? whatever the reason the injector is not firing will set a code .. if it was just one injector then it would set a misfire code ..unplug injector connector use a voltmetre in connector and crank engine .. you should get a pulsed voltage to injector during cranking (voltage then no voltage then voltage again) ... let me know !


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Saturday, March 7th, 2009 AT 6:18 PM
Tiny
BLODWIN
  • MEMBER
  • 5 POSTS
Thanks Dave, I put voltmeter on injector connecter and there is no voltage (pulse). Engine light is on but showing no faults still?
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Sunday, March 8th, 2009 AT 4:41 AM
Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Hey Blodwin.

Is your OBDII linking and saying "no faults found" .. or something in that nature ? .. are you getting no signal at all to ALL injectors .. when you first turn the key to ON position (ignition light on, not cranking) you should get a 1/2 second voltage to ALL injectors then whilst cranking this signal is pulsed .. did you try while cranking ? pleas could you check all 4 for me also do you have a manual for the vehicle ... this car was not released in the USA so i do not have any diagrams or specification's for it ?? ..( I am english and have worked on them ..LOL) ... let me know


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Sunday, March 8th, 2009 AT 6:52 AM
Tiny
BLODWIN
  • MEMBER
  • 5 POSTS
Hi dave my obd is linking and saying no faults found. No voltage present with ignition or cranking over. Will start when being towed. OBD does say EGR NOT READY. SO POSSIBLE EGR VALVE PROBLEM?
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Sunday, March 8th, 2009 AT 7:30 AM
Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Mmmmmmmmmmmm .. if you are not getting voltage to the injectors @ cranking .. why are you getting it starting with a tow ?? it has to be an electrical fault somewhere on the injector wiring ...It must be a loose wire ..try jiggling/waggling the injector wires whilst cranking ... the egr vlave should not stop the car starting unless you have a plugged/blocked catalytic convertor !!! .. let me know


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Sunday, March 8th, 2009 AT 8:01 AM
Tiny
BLODWIN
  • MEMBER
  • 5 POSTS
Hi dave just to let you know I ended up draining all the fuel and putting fresh in and it started with a tow and has been starting fine off the the key for the past week. Strange one I know but problem solved. Think it was contaminated fuel and computer did not like it but HEY HO job done and thanks for youre help
Blodwin
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Saturday, March 14th, 2009 AT 3:41 PM
Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Hey Blodwin.

Well Done .. very strange indeed ?

What counts is, it is up and running ...

No problem for the input .. please feel free to spread the word of our forum to friends and family and to visit us again should you run into problems in the future ... long distant future .. you hope .. LOL ..

Happy Motoring


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Saturday, March 14th, 2009 AT 3:47 PM

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