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  1. #1
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    T5 refusing to start :(

    I have a 850 T5 '96 manual and everything works exactly as it should except for no spark at the plugs :/ I've put new plugs, leads, dizzy cap, rotor arm and ignition coil and still nothing

    What's next? Ecu? Cam sensor? Any other sensors? Personally I think the devil is out to get me

    Thanks to all in advance
    Last edited by 850t5; Friday 22nd July 2011 at 02:03.
    855 turbo '96 manual and its alive!


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    no theres no cut off switch for the coolant, you sure your getting fuel? that easy start stuff is pure crap..take a plug out and leave it on the plug lead and earth it close to the engine block and gett someone to turn the engine over and look for a faint spark from the plugs.

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    850t5 (Tuesday 11th January 2011)

  4. #3
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    Low water in the rad reservoir will only throw a warning light. If the engine turns & there is no spark then it is either an ignition problem - check dissy cap - ht leads & spark plugs or a sensor problem - immobiliser or crank position sensor being the most likely candidates. You have breakdown cover or similar?
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    a 19t just isn't laggy enough
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    the ecu could be refusing to spark for many many reasons, is it throwing a CEL light becuase i'd get the codes read & see what it says is wrong

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    850t5 (Tuesday 11th January 2011)

  8. #5
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    Edit: I'm wiser now lol
    Last edited by 850t5; Friday 22nd July 2011 at 02:04.
    855 turbo '96 manual and its alive!


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    ,.,

    fuel pump relay or fuel pump.........check fuel pressure on the end of the fuel rail,
    if its lost spark you can check by removing a plug lead,use an old plug to see if it sparks,or could be crank sensor,or ignition amplifier........or might even be ignition barrel,
    get codes read if you can to be a bit more accurate tho .
    Last edited by t5 stealth; Tuesday 11th January 2011 at 19:43.
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    There's also a relay tucked under the radiator top panel on the right, the wiring often rots as it goes into the connector, this kills the feed to the cam sensor (well it did on mine !) and kills the spark.

    Interestingly did anyone know that you can't start an 850 with the cam sensor unplugged but it will continue to run if you unplug it whilst it's running ? (okay not that interesting !)
    Old Car: 855 T5 in Grey and rust (dead and gone, well, most of it !
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    faulty starter motor can kill spark as well as i found out even tho it sounded fine think it was drawing to many amps from the coil and was showing crank sensor signal absent fault and cam sensor fault

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    850t5 (Wednesday 12th January 2011)

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    Hi everyone Nice to be back after so long, I had a few personal problem so have been out of action for months :/

    My car has sat for the last few months untouched but now I'm back to health I've started work on her again So far..... I've replaced the plugs, leads, dizzy cap, rotor arm and ignition coil to no avail.... STILL no spark :/ It's mentioned above that the car would continue to run if the cam sensor was unplugged so I'd rule that out as my car was running when it died (it was like someone unplugged the ignition coil
    -a totally clean break rather than a spluttery stall out) ...

    There is plenty of fuel going thru the rail but still no spark at all .... After eliminating all of the above what does it leave? Yours truly stumped .....



    P.s. Woody... I believe I still owe you a tenner
    Last edited by 850t5; Thursday 21st July 2011 at 15:26.
    855 turbo '96 manual and its alive!


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    ,.,

    ignition module,
    screwed onto the inner wing behind the n/s headlight,
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    Thanks bud, I'll give it a try
    855 turbo '96 manual and its alive!


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    Red face

    Ecu or fuel pump relay?

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    Did you check that relay and wiring under the radiator top panel ?
    Old Car: 855 T5 in Grey and rust (dead and gone, well, most of it !
    Missus' ride: Citroen C4 coupe 1.6 HDi,
    Modifications: Nowt.....yet !
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    Currently nursing a blown head gasket, new engine on its way !
    Recent addition: Freshly imported Honda Stepwagon,
    Slowly turning into a camper van !

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    850t5 (Friday 22nd July 2011)

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    Quote Originally Posted by merc85 View Post
    Ecu or fuel pump relay?
    Fuel is coming thru just fine ... No spark at all tho :/ Not even a faint one Poo lol
    855 turbo '96 manual and its alive!


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    Is the fuel reaching the cylinder via the injectors or do you mean the fuel is present at the rail?


    Gun Metal Grey - Volvo 850R - Saloon
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    Quote Originally Posted by merc85 View Post
    Ecu or fuel pump relay?
    The ECU is still a suspect but I'd rather renew the cheap stuff first If I get an ECU ill get one chipped at the same time This car will run if it kills me lol
    855 turbo '96 manual and its alive!


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    Quote Originally Posted by AndysR View Post
    Is the fuel reaching the cylinder via the injectors or do you mean the fuel is present at the rail?
    I pressed the nipple on the end of the fuel rail and had someone turn the key It gushed out lol

    Even if the injectors were knackered there's no spark to ignite the fuel anyway :/
    855 turbo '96 manual and its alive!


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    Coolant temp sensor caused this on my v40, don't know if it could on the 850s but worth ruling out.
    Alastair
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    Quote Originally Posted by nobananas View Post
    Did you check that relay and wiring under the radiator top panel ?
    First thing in the morning now that you mention it Thanks

    Quote Originally Posted by Al115 View Post
    Coolant temp sensor caused this on my v40, don't know if it could on the 850s but worth ruling out.
    That's a new one Thanks, I'll look into it

    Quote Originally Posted by t5 stealth View Post
    ignition module,
    screwed onto the inner wing behind the n/s headlight,
    I typed 850 ignition module into ebay and it came up with the little black unit that is attached to the ignition coil via the triangle steel plate.. if that's the part you mean then I've already replaced it when I did the coil Or do you mean a different part? The coil on my 850 isn't behind the headlight, it's between the airbox and the suspension hump ???

    Last edited by 850t5; Friday 22nd July 2011 at 06:15.
    855 turbo '96 manual and its alive!


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    Quote Originally Posted by 850t5 View Post
    I pressed the nipple on the end of the fuel rail and had someone turn the key It gushed out lol

    Even if the injectors were knackered there's no spark to ignite the fuel anyway :/
    The injector relay is on top of the radiator as mentioned above, this maybe the cause of your fault. Is there a spark to the distributor cap?


    Gun Metal Grey - Volvo 850R - Saloon
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    850t5 (Friday 22nd July 2011)


 

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