|
850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
Information |
|
C70 MisfireViews : 465 Replies : 5Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Sep 15th, 2017, 12:08 | #1 |
Member
Last Online: Jan 1st, 2023 09:23
Join Date: Nov 2000
Location: sheffield
|
C70 Misfire
During my working day yesterday my C70 developed a Misfire.
The car lost power & struggled to maintain speed. Vida showed ECM-3503 & ECM-3543, misfire no4 cylinder. Also code p0301 showed on my scan gauge I erased the codes, replaced all spark plugs & swapped no4 coil pack I also did a full compression test, all was good showing 130+-, so that was a relief. I took the car for a run, still have misfire & code returned ! Any help please ? |
Sep 15th, 2017, 17:14 | #2 |
Master Member
Last Online: Jan 1st, 2024 13:30
Join Date: Nov 2016
Location: Merseyside
|
swap cyl 4s coil with another cylinder. see if the fault swaps with it to the new cylinder. if so you've got a dud coilpack. if the fault is still cyl 4 then likely to be the spark plug itself
p0301 though is cyl 1 misfire, not cyl 4 (p0304)...... maybe you had 2 dead coilpacks
__________________
https://www.facebook.com/VolvoComposites/ Horsepower is how fast you hit the wall Torque is how far you take the wall with you Last edited by DunkinBiskits; Sep 15th, 2017 at 17:17. |
Sep 15th, 2017, 20:18 | #3 |
Member
Last Online: Jan 1st, 2023 09:23
Join Date: Nov 2000
Location: sheffield
|
Hi thanks, I will try that.
I moved coil 4 to 1, as cylinder 4 showed as original failing on Vida Will move 1&4 to 3&5 to see if codes move. Any chance injector may have failed ? |
Sep 16th, 2017, 09:26 | #4 |
Premier Member
Last Online: Today 14:53
Join Date: Jan 2011
Location: Horne (Nr. Horley)
|
There's always a chance than an injector has failed, but statistically it's a very small chance - far more likely to be a coil pack, it's a common fault.
Don't run it for long with a misfire or you'll lunch your catalytic converter.
__________________
Some people are like Slinkies, they serve no useful purpose but they still bring a smile to your face when you push them downstairs. |
The Following User Says Thank You to Luxobarge For This Useful Post: |
Sep 16th, 2017, 10:21 | #5 |
Member
Last Online: Jan 1st, 2023 09:23
Join Date: Nov 2000
Location: sheffield
|
Success 😩 I think, switched coil pack & fault code moved to new position, so sure it is coil pack.
So, car has done 113k, do I replace all ? Also, am I best buying genuine ? |
Sep 16th, 2017, 14:04 | #6 |
Master Member
Last Online: Jan 1st, 2024 13:30
Join Date: Nov 2016
Location: Merseyside
|
just find an uncracked OE used one. theres a few breaking ads on here, I'm sure someone will have something compatible for you.
new is always the best answer though if youre feeling flush
__________________
https://www.facebook.com/VolvoComposites/ Horsepower is how fast you hit the wall Torque is how far you take the wall with you |
The Following User Says Thank You to DunkinBiskits For This Useful Post: |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|