P0138 HO2S Circuit High Voltage Bank 1 Sensor 2

From : fred

Q: actually sounds more like a map sensor unhooked but the systems are so inter-related one must diagnostic check the system to get going. run codes check crank sensor well i fixed an overheating problem with a new thermostat!yaaa! truck started great int he morning but as soon as it warmed up it decided it did not want to start or so i thought. if i crank the starter and hold it it will eventually fire up. it does bang and ping irradically but then finally catches with a roar of the engine i popped the hood and heard an awful sound while it is idling crazily it is a load hissing noise that goes away once the engine calms down. there is also black smoke coming out of the tailpipe however it stops once the engine calms down and starts idling properly. i know this is long sorry. any suggestions on what to try pcv valve already checked -- posted using the http//www.autoforumz.com interface at authors request articles individually checked for conformance to usenet standards topic url http//www.autoforumz.com/dodge-96-1500-hard-start-ftopict128663.html visit topic url to contact author reg. reqd. report abuse http//www.autoforumz.com/eform.phpp=627444 .