Alright so I have a 4.0 sohc it runs great besides when I first start it it won't idle unless I run the engine at high rpms. I've checked for vacuum leaks replaced spark plugs and my coil pack along with my mass airflow sensor and my dpfe/egr sensor all have helped with performance. If I do drive it at high rpm for about 10 min it will idle but I would like to start it and let it warm up since it's winter and I'm getting tired of throwing money to just have little improvements with its overall driving. I do the repairs myself and would like to find a solution please help!!
Thank you. I have not checked the intake manifold O-rings I could check it out. But would that have anything to do with the fact that it's only when it's cold or could the O-rings expand once they heat up?
I did pull codes. I took it to auto zone and the code reader recommended a mass airflow sensor and that I was having miss fires in 1,5, and 6 with a few other codes like not getting enough fuel. I haven't been too worried about my mass airflow sensor since I replaced it less then two years ago. I'lol prolly pull codes again and see if anything comes up different and post the results. The codes are why I put a new coil packs in.
Copper spray on the gasket....I don't think so. These are plastic on plastic with o-rings, not a one piece gasket like older/other engines with metal intakes. There are two parts to this video, and it is a bit tedious. BUT it gives a clear view of the process and the intake sealing surfaces.