copy252

so i seafoamed my pvc and oil today and the check engine light comes on when im doing it. i wait the 10 minutes go and start it and the light is still on. i run the car on the highway for a while and let all the white smoke go and the lights still on! so i go to auto zone. they check the codes. 7 of them and 5 were something about air fuel blah blah. i assume thats the seafoam doing its thing and will go away. the 2 other were multiple cylinder misfires. so..... i get some plugs (6 i got a 3.2 so no wires) when im about to do it... the light goes off! i go back to auto zone and they read it again.... same codes! NO LIGHT! so they cleared it.... question.... wtf?

copy252

just changed all 6 spark plugs

Go90go

Glad you got that sorted, m8.

~Cheers~

copy252

not sure if its sorted seeing i havent run a scan yet again but im hoping there all gone. coil packs arent the cheapest nor is o2 sensors and thats all i think it could be. plus its known thats its a plus to change yur spark plugs after seafoaming

WolfpackBill

My Acura did that too whenever I do the Seafoam. I use my ScanGauge to clear the codes. It's nothing to worry about. As long as the codes are cleared, you're good to go.

c29842984

It's very common for cylinders to misfire while doing any kind of fuel system cleaning on any car. Nothing to worry about unless it misfires under normal conditions.

copy252

yeah... i changed my plugs and brought it back the next day. firing on time now and no codes!

arshdeep99

Don't know what milleage you have on the car but you could have used the extended emissions warranty. They change the plugs and ignition coils free....

copy252

pay more attension to sigs is what i can say to you..... i have a 1998.... not on the extended list.... also it says my miles..... 73000... im actually at 74 almost now