Hi all,
I’ve read through a bunch of Code 25 threads but in a pickle at the moment and could use some help.
I threw the code and took it to a local shop who ran a smoke test and came back fine. I also have replaced most evap hoses, EGR and all is tight. My O2 sensors were bad or loose fitting exhaust so they replaced them, gutted my already trashed cats and I did a cat back delete. No issues. I’ve driven about a hundred miles no issues or lights then today the CEL came back on and I have a Code 25. I did take it to a Valvoline to do the injector cleaning thing but when they removed my boot to put their line in, the engine revved as if the idle speed motor was disconnected but it wasn’t. Scratch that.
Sensors were replaced with these high end ones (forget the name but as much as OEM) which were not available on backorder. Again the truck has about 150 miles on it since they were done and no light or code.
Things I’m thinking about:
1. Plugs- replaced but “may” not be in spec?
2. MAF- plug is a tiny bit wobbly but otherwise secure.
3. Header leak? No idea and no blackening, just curious.
4. TPS? How would I check this?
5. Crank bolt- I did my seal and oil cover seal recently and didn’t have a 300+ ft/lb torque wrench but did have a 250 so we put a bar on it and cranked it down. Sure it’s close or over but no leaks.
Otherwise truck drives great and it’s only the Code 25 which takes a couple drives before it comes back on after resetting it.
Any ideas would be greatly appreciated!
I’ve read through a bunch of Code 25 threads but in a pickle at the moment and could use some help.
I threw the code and took it to a local shop who ran a smoke test and came back fine. I also have replaced most evap hoses, EGR and all is tight. My O2 sensors were bad or loose fitting exhaust so they replaced them, gutted my already trashed cats and I did a cat back delete. No issues. I’ve driven about a hundred miles no issues or lights then today the CEL came back on and I have a Code 25. I did take it to a Valvoline to do the injector cleaning thing but when they removed my boot to put their line in, the engine revved as if the idle speed motor was disconnected but it wasn’t. Scratch that.
Sensors were replaced with these high end ones (forget the name but as much as OEM) which were not available on backorder. Again the truck has about 150 miles on it since they were done and no light or code.
Things I’m thinking about:
1. Plugs- replaced but “may” not be in spec?
2. MAF- plug is a tiny bit wobbly but otherwise secure.
3. Header leak? No idea and no blackening, just curious.
4. TPS? How would I check this?
5. Crank bolt- I did my seal and oil cover seal recently and didn’t have a 300+ ft/lb torque wrench but did have a 250 so we put a bar on it and cranked it down. Sure it’s close or over but no leaks.
Otherwise truck drives great and it’s only the Code 25 which takes a couple drives before it comes back on after resetting it.
Any ideas would be greatly appreciated!
