98 C230 // Rough Idle // Error codes: P0100, P0110, P0300, and P0302
Thread Starter
Newbie
Joined: Aug 2019
Posts: 1
Likes: 0
C230
98 C230 // Rough Idle // Error codes: P0100, P0110, P0300, and P0302
When I start it up after a few seconds in park it seems pretty normal, but slightly louder. However when I put it in drive or reverse it turns into a vibrating mess. I scanned my car and it gave me error codes for my spark plugs so I took a look at them. Changed them out even though the Bosch ones inside seemed okay themselves. Turned it back on and it made no difference. Checked my MAF and it looks almost brand new. No idea where my IAT is located on this car.
Other than the heavy idling it seems slower than before. Acceleration was kind of slow until I changed the spark plugs on it. Seemed to make things a little better, but doesn't seem to be as fast as it once was. Replaced the old Bosch ones for some NGKs and cleaned the MAF.
The scanner still says the same thing when I clear and scan it again. I really don't want to order parts if they're not bad and unfortunately I can't seem to find a way to check if they are or not.
Other than the heavy idling it seems slower than before. Acceleration was kind of slow until I changed the spark plugs on it. Seemed to make things a little better, but doesn't seem to be as fast as it once was. Replaced the old Bosch ones for some NGKs and cleaned the MAF.
The scanner still says the same thing when I clear and scan it again. I really don't want to order parts if they're not bad and unfortunately I can't seem to find a way to check if they are or not.
