AWD: 70: - Vxc70 2002 2.4 turbo..... Running on 3 cylinders...

Matthewdupreez · Jul 14th, 2021, 16:18

ok so we have a bit of a problem.....
Our 2002 VXC70 2.4L turbo cross country volvo... started to run roughly... cylinder #3 was not firing.... so we swopped out one of the spark plug boots from one of the other cylinders to the one that wasn't firing correctly... then that didn't work....so now we're down to 3 cyclinders....
it seems as though the car is not giving out any pulse to the #3 cylinder... as we checke it by placing a screwdriver into the boot and holding it a couple o mm's away from the body... no spark...
when we put the boot that wasn't working onto a cylinder that previously was working that clyinder is now no longer getting any spark....
i am guessing that the ecu "knows" that there was a fault on the #3 and #5 cyclinder so it's turned off the spark on those 2....
how dou you reset the ecu so it trys to use as as many cylinders as will operate....

if i'm wrong how else can we fix this.... i am aware that we probably have to purchase a new boot for the one sparkplug... but now the other ecu's stopping cylinder #5 from firing....

Luxobarge · Jul 14th, 2021, 22:13

Suggest you post in the >2000 section, this is for x70 up to 1999

Jul 14th, 2021, 16:18	#1
Matthewdupreez New Member Last Online: Jul 19th, 2021 16:48 Join Date: Jul 2021 Location: Johannesburg	Vxc70 2002 2.4 turbo..... Running on 3 cylinders... ok so we have a bit of a problem..... Our 2002 VXC70 2.4L turbo cross country volvo... started to run roughly... cylinder #3 was not firing.... so we swopped out one of the spark plug boots from one of the other cylinders to the one that wasn't firing correctly... then that didn't work....so now we're down to 3 cyclinders.... it seems as though the car is not giving out any pulse to the #3 cylinder... as we checke it by placing a screwdriver into the boot and holding it a couple o mm's away from the body... no spark... when we put the boot that wasn't working onto a cylinder that previously was working that clyinder is now no longer getting any spark.... i am guessing that the ecu "knows" that there was a fault on the #3 and #5 cyclinder so it's turned off the spark on those 2.... how dou you reset the ecu so it trys to use as as many cylinders as will operate.... if i'm wrong how else can we fix this.... i am aware that we probably have to purchase a new boot for the one sparkplug... but now the other ecu's stopping cylinder #5 from firing....

Jul 14th, 2021, 22:13	#2
Luxobarge Premier Member Last Online: Today 18:03 Join Date: Jan 2011 Location: Horne (Nr. Horley)	Suggest you post in the >2000 section, this is for x70 up to 1999 __________________ Some people are like Slinkies, they serve no useful purpose but they still bring a smile to your face when you push them downstairs.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)