Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

firing sequence?

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Old Nov 16, 2009 | 02:18 PM
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s_moneh's Avatar
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ok so i took the t5 out for a spin today and noticed a HUGE sputter, liek i would idle and it would shake the whole car, soi'm like hmmm after about 10 min of driving time the check engine light came on, so i went ahead and checked it out

p0304- cylinder 4 misfire
p1310- no idea....


so i'm wondering which is the right cylinder to look at?

i replaced the plugs and cables with NGK

ngk wires
ngk iridum plug

they r brand new and i dont know why is misfiring, i'm begining to think i may have messed up how i plugged it into the distributor cap

so i'm jsut wonder which cylinders r which? and wats the right placement for the distributor cap thanks!
 
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Old Nov 16, 2009 | 02:23 PM
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get rid of those plugs. only use oem plugs. I have read stories of people who had misfires, swapped their aftermarket plugs for oem ones, and the car ran perfect afterward.
 
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Old Nov 16, 2009 | 02:42 PM
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honestly tho i had these same ones in my other 850 and it ran BEAUTIFULLY never had a problem with the same plugs, mind u they were 11$ a piece i tihnk i may have done somthing along the lines of replacing them and thats wats giving me a cylinder 4 misfire

wat is the order for the cylinders? and where does each cylinder plug into the cap? can anybody give me that?
 
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Old Nov 16, 2009 | 02:58 PM
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here !
 
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Old Nov 16, 2009 | 05:59 PM
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Originally Posted by s_moneh
honestly tho i had these same ones in my other 850 and it ran BEAUTIFULLY never had a problem with the same plugs, mind u they were 11$ a piece i tihnk i may have done somthing along the lines of replacing them and thats wats giving me a cylinder 4 misfire

wat is the order for the cylinders? and where does each cylinder plug into the cap? can anybody give me that?
Oh really? I've read a lot about people running those and misfiring all the time, then switched back to oem and everything was fine. More power to you, and for 11 bucks a piece, they better give your car wings.
 
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Old Nov 16, 2009 | 11:04 PM
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so i came home from work not to long ago and began my investigation, and i've come up short.... the can ran fine wen i got home, no sputter, no codes nothing, however i did check each adn every spark plug and it seems the my cylinder 4 may not be getting fuel, i'm gunna have to further test that out tommorow, but wats my best option on doing that?
 
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Old Nov 16, 2009 | 11:28 PM
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cylinder 4 may not be getting fuel
I'm not expert but this is what I would do:
When engine running spray some injector or brake cleaner around injector, if it sucks in then it needs new O ring. If not, switch injector 4 and 5 and see if it misfire in cylinder 4 or 5. If misfire in 5 then its bad injector, if misfires in 4 then it is electrical.
 
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