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PO305- cylinder 5 misfire

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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s70glt novice[Will]
Posts: 233
Joined: 24 September 2011
Year and Model: s70 glt 98
Location: Martinez, CA

Re: PO305- cylinder 5 misfire

Post by s70glt novice[Will] »

It runs great! didnt even notice until someone let me know. Can't wait to re gap! so muchhhhh pull
'98 s70 GLT-127k
ARD Green, obx, 16t, other go-fast parts

s70glt novice[Will]
Posts: 233
Joined: 24 September 2011
Year and Model: s70 glt 98
Location: Martinez, CA

Post by s70glt novice[Will] »

It ran great because it was gapped to .025. double fail? Anyway, i'll order the new wires soon. Thanks for help in solving this issue!
'98 s70 GLT-127k
ARD Green, obx, 16t, other go-fast parts

s70glt novice[Will]
Posts: 233
Joined: 24 September 2011
Year and Model: s70 glt 98
Location: Martinez, CA

Post by s70glt novice[Will] »

For anyone interested, the problem was solved with a set of Kingsborne spark plug wire sets(the 8mm, to be specific).
'98 s70 GLT-127k
ARD Green, obx, 16t, other go-fast parts

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rspi
Posts: 7303
Joined: 5 November 2011
Year and Model: 850 T-5R Wagon
Location: Cincinnati OH
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Post by rspi »

Glad you got those old wires out. It must be nice to have smooth sailing all the way to 6k :)
'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
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Volvo's of past: '87 740 GLE, '79 262C Bertone, '78 264, 960's, '98 S70 GLT, '95 850 T-5R YellowVolvo Repair Videos

s70glt novice[Will]
Posts: 233
Joined: 24 September 2011
Year and Model: s70 glt 98
Location: Martinez, CA

Post by s70glt novice[Will] »

Hell yea! However, i lost a lot of low range power. but when it hits the powerband....your stomach is left behind. its awesome! Looking for ways to move the powerband lower or help with low range....hmm....twin turbo? :P

In all seriousness, i removed my spare (and all of the 50lbs of junk i had in the trunk), and im going to clean the throttle body.

I broke a PCV hose while installing the new turbo (biggest one to the PTC valve, and i have a missing hole on the nipple to the left and up of it, and i broke the connection to the wireing harness that hooks up there) so im gonna order a PCV kit soon. I also found oil sprayed all over my engine from what looks like the dipstick tube D:

Wish me (and my RMS) luck!
'98 s70 GLT-127k
ARD Green, obx, 16t, other go-fast parts

Roadrunner
Posts: 56
Joined: 28 February 2010
Year and Model: 850 GLT 1993
Location: Springfield, Viriginia

Post by Roadrunner »

A quick note about additional thing to look for is lose or broken vacum hoses can cause mis firing.
It sound crazy but I have seen this thing many times. After you do your tune up, if you have a freind that can check your timing to see is it moved slightly.
Anyway just some thoughts.
1993 850 GLT 300,000 miles plus and still going.

s70glt novice[Will]
Posts: 233
Joined: 24 September 2011
Year and Model: s70 glt 98
Location: Martinez, CA

Post by s70glt novice[Will] »

maybe thats true. It hasnt changed since and im satisfied with it. I'll check it out during my timing belt job.

Thanks for the tip
'98 s70 GLT-127k
ARD Green, obx, 16t, other go-fast parts

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