Hello. I have a chevy malibu 2009 LS has 130kmil. It's revving up in park and Neutral but It run normal in reverse and drive. I have cleaned the throttle body sensor and mass air flow sensor but it still does not fix the code. Any help would be appreciated 🙏
I assume you mean p1400 in which case you have an emissions related problem upon startup that is polluting too much. It can be a royal pain in the ass to fix if it runs okay I would live with it. But if you do emissions testing in your area and you need it inspected soon you're going to have to see a really good mechanic on that one cuz it's a very complex process to analyze the cold start emissions control system
Thanks sir I think I'd live with it
I forgot to mention that the ac isn't working as well.