I replaced and rechecked the gap and plugs which are fine, but the 135 show a misfire. I replaced the thermastat & radiator as well all with in the month. Now it bogs in morning starting for ten minutes and then is fine.
misfires after plug change etc on 2000 Dodge Ram Van 1500
135 is a o2 sensor code. missfires are the 300 series. it is a heater fault in bank 1 sensor 1. it could be wiring or a bad sensor. get a shop to confirm.