Random multiple cylinder misfire detected
#1
Random multiple cylinder misfire detected
How can I narrow down the cause of this? I have already changed the plugs after that I’m not sure where to go. Could this be related to afr because I have to connect the gauge still so I don’t know as of now the afr. In addition if it’s helpful the car has a issue with its idle where it goes up and down and never seems to be stable.
Attachments are the error codes, freeze frame data and emanage graph.
Attachments are the error codes, freeze frame data and emanage graph.
#4
#6
Check out this chart which did your plugs look like
http://www.ngksparkplugs.com/tech_su...qs/faqread.asp
http://www.ngksparkplugs.com/tech_su...qs/faqread.asp
#7
misfire
how many miles. are you running with cold air intake ? are you useing maf if so check maf it might be dirty. your readings looks ok short trim coo. long trim within specs. you may also have a vacuum leak . that will also cause unstable idle. and incorrect a/f readings. how about throttle duty %
#9
Check out this chart which did your plugs look like
http://www.ngksparkplugs.com/tech_su...qs/faqread.asp
http://www.ngksparkplugs.com/tech_su...qs/faqread.asp
#11
how many miles. are you running with cold air intake ? are you useing maf if so check maf it might be dirty. your readings looks ok short trim coo. long trim within specs. you may also have a vacuum leak . that will also cause unstable idle. and incorrect a/f readings. how about throttle duty %
#13
#17
#19
Also is gap on the plugs that important that it could cause this. The plugs are NGK iridiums I think the gap out of the box is .44 I got injector cleaner in the tank now, guess I will se if that helps. I also notice when the idle is messy raising the throttle a bit will have the same issue bouncing around so its not just idle.