I'm fixing my old car for my son. It's a 2004 honda accord 3.0. I replaced the oil pan, value cover gaskets, spark plugs. The car sat for a week then I replaced the entire front suspension. It took me a couple of days. I finished then took it for a drive now I have 13 engine codes. It's running but rough. Codes are as follow.
P0305,303,300,302,301,304,305,303,300,304,306,301,302.
I know that's a lot of repeat but that's what it's reading. It's say cylinder misfire and random/multiple misfire detected. Thanks for all your help
Since all cylinders are misfiring it may be a fuel delivery problem. How old is your fuel filter (or air filter)? Is fuel pressure OK? Are fuel injectors clogged? Another thing that might affect all cylinders is a large vacuum leak, such as the power brake booster.
Or it also could be the timing belt just stretching from high mileage and it’s messing around with engine timing causing misfiring on all cylinders. since that accord has an interference V6 engine I would recommend changing the rubber timing belt every 100,000 miles.
Yes, if the timing belt is old it could definitely be causing problems. (Hopefully it's not the 19-year-old original!)
Thank you. I will give it a look
Did it work fine before the maintenance? No codes?
