p0300-code

Question

Last week someone orange coolant into my daughters gas tank. Got tank cleaned and in the process damaged purge canister. Truck ran fine for a few days. Last night it died. Had p0441, p0420, p0430, and p0300. Replaced purge canister and only code left is p0300. After repairs, clearing codes truck started and would idle rough the smooth, rough yhen smooth repeatedly. After bout 20 mins it died will not start back up. Any ideas?

Answer 1

HI there

Remove the front O2 sensors from ahead of the converters. If the converters are damaged from the coolant or just damaged it might be blocking the exhaust flow. IF you remove the sensors and it will start and run, then the converters are the problem and will need to be replaced.