Hi new here and need some help

[Vaquerotr]

Hi I have a 1997 Explorer XLT with a 4.0 SOHC I replaced the PCV valve and the engine is still running really ****ty especially on cold days. I ordered the intake valve gaskets and EGR o-ring and gasket. I am hoping this fixes it but wanted to ask if anyone knows if there might be more that I need to do. I bought the truck in June of 2017 in California then drove it to Texas and it just recently turned the Check engine light on after making a trip to California and back. It acts up more on cold days lately. If anyone could give me any suggestions it would be greatly appreciated.

 

[JungleSkunk]

Have you checked the engine codes? Tried basic stuff like plugs, wires,air and fuel filter?

 

[Mr. Alligator]

The cold weather aspect sure makes this sound like upper and lower intake gaskets.

Good luck!

 

[Vaquerotr]

The cold weather aspect sure makes this sound like upper and lower intake gaskets.

Good luck!

Thanks