So yesterday my friend and I tried to clean out the throttle body on my 00 4.0 Ranger. We started it up and my friend sprayed carb cleaner into the throttle valve. He ended up spraying just over 1/2 a bottle, which was a little much IMO. After we cleaned off the intake air temp sensor which had a gumky build up and also the Mass Airflow sensor. He cleaned airflow sensor with just a q-tip. We also removed the throttle position sensor and put it back on.

Now the truck wont run. It will kick over a little without giving it any gas. If you give it some gas after it has been sitting for a bit it may get going but you have to keep it at 3000-4000 rpm to keep it going and even then it will just cut out after 2-3 seconds, if you pump the pedal once quick enough when it cuts out it will keep running but will cut out again.

We did spray a lot of black stuff out of the exhaust and onto my house. I tried it this morning before work and it was the same thing. Exhaust was a little wet.

I am running out of idea's as to what this could be. The only thing I could come up with staring at the ceiling in bed last night was to pull the plugs as they might be really fouled judging by what came out of the exhaust pipe.

Is there anything I could be missing?

Thanks in advance for all your help. I did a search but no luck.

 

I'm not really sure what to tell you, except maybe check the plugs, somebody who knows will come along eventually.

Just wondering though, why did you use carb cleaner instead of throttle body cleaner?

 

Yeah it was carb cleaner. Can't be that much opf a difference between the 2.

 

Actually, there is, carb cleaner can eat plastics and such, and can kill sensors. Good change you just killed some sensors in your truck

 

Starting to look like that is the scenario. I pulled all the plugs and they looked fouled up. Cleaned them and tried again with no luck.

I wonder which one to start with. Mass airflow sensor never got touch by the stuff. Intake air temp gauge did. What other sensors are thier that I should look at replacing?

 

If you adjusted the throttle, you need to set it back to specs or the truck won't run right. Also need to set the throttle position sensor properly, and make sure that the MAF is plugged in and functional. Make sure the MAF wasn't damaged by cleaning it.

 

I just got it running. It was the mass air sensor. When my friend cleaned it with the q-tip he broke one of the filaments. She's back to purring like before.