p0306 help

Hello. I hope to use some of the vast knowledge from you all. I have a 05 Tacoma DC 4X4. I started getting a random P0306 code. I replaced the plugs several months ago. The truck has about 104000 miles on it. I replaced all ignition coils and reset the codes. It went away for little while, but came back later. I have seen some others with the same issues but no resolutions. Have read it could be fuel, cam position sensor or even MAF sensor. I drive about 100 miles a day. Don't believe it to be fuel. The CEL will flash in the mornings but will go steady after it warms up. It will run very rough also while cold but smooth out after it warms up. Any idea on which to start with? Thanks

 

Thanks. Will try that and get back to you. May be a couple of days but will let you know what I find.

 

OK. Truck started really acting up. It started cutting off, shuddering at when driving at lower speeds. (When truck was lugging) I didn't have the time to look at it so I sucked it up and took it to the dealer. First that HAD to tune it up. I did one less then 10000 miles ago. They stated the plugs were Iridium and that those will not work in the 05 Taco. Then they found that the PO had broke a vacuum plug off the air box and tried gluing it back and it had falling off. So they are ordering a used one to replace. They say that is the problem. Will see when I get it back next week. I was thinking it would have been the cam sensor though. Will keep you updated. Thanks

 

interesting... lots of people run iridium plugs in their Tacoma

 

yeah that was what I thought also. I was for sure I had read that on this site. But what makes it even more interesting is I did not ask for them when I purchased them. Unless the salesman grabbed the wrong ones. I have one at home and will look this weekend.