tc1003

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.

dave2610

running to rich would be my guess

Blue_TC_Man

get an AFR gauge. and your either rich or lean.

what did your old pugs look like when you pulled them

tc1003

Plugs were black. I have the gauge installed I just need to get the welding done to finish it.

Ace83

iTrader: (6)

yeah check your afrs, too rich and too lean will cause misfire. check you plugs too if theyre fouled and also the gaps

dave2610

Check out this chart which did your plugs look like

http://www.ngksparkplugs.com/tech_su...qs/faqread.asp

cmcpride

iTrader: (3)

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 %

Blue_TC_Man

yeah your rich

tc1003

Like the second image except the Insulator was still white.

dave2610

maybe just a little rich then. Id say its tune related

tc1003

miles 69000, maf replaced same issue, vac leak is a possible but I have not yet found one and I did check. I hope the attachment answers the question about throttle duty I put everything in there.

WillyB

A lean condition would sputter, That's when you would need to clean/change a MAF or even O2 sensors. Rich is inconsistent idle, and surges. what's the CEL code number?

tc1003

P0300
P0302
P0303
P0304

By this it sounds like rich thats what its doing.

WillyB

Sorry didn't see the Chart. I would put my money on O2 sensors or Fuel injectors, could also be Coil packs. I work on my own cars, and i always seem to change Plugs, and Coils at 70,000 miles.

dave2610

my 2 cents- i had similar issues with the misfires and inconsistent idle i was running rich

cmcpride

iTrader: (3)

have you checked your compression yet. if so where is it at?

tc1003

Thats what im leaning towards now I just have to get the gauge welded in and connect it to the emanage.

tc1003

Have not checked yet.

tc1003

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.

tc1003

Also having the injector cleaner in the tank made the jumping around worse. I have not got through the tank yet to see the end product but for the most part it sounds like a fuel issue correct?