Just wondering if I should be concerned about cleaning these sensors if I have an auto. tranny? I am up to close to 80,000 miles now, but I remember reading that they get more gunk on them in manual tranny trucks... Anybody cleaned them on an auto tranny truck and found them to be dirty? Thanks!

 

i am sure they will have some gunk/film on them. IMO it is doubtful cleaning will show a iota of improvement.

 

For the 30 minutes or so it takes to pop them out and clean them, it's worth it.

You may or may not notice a difference afterwards but having them clean will help your truck run better.

I have an exhaust brake on my truck and they both get mucked up pretty good in a short time and it really makes a difference on mine.

It's cheap maintenance, clean them anyways and it's one less thing to worry about.

Jeff

 

I cleaned mine and it was slightly dirty. Use brake or electrical cleaner, something with no residue. Don't use carb cleaner, I've heard it does not do as good of a job.

Make sure everything is good and dry before reinstall, you do not want it to go boom when you restart the vehicle.

 

I cleaned mine at 50,000 & 100,000. Never noticed any difference.
I replaced both at 150,000 miles as an experiment and noticed no significant difference again.

That being said.... with 2nd Gens getting into the 200,000 + mile range..... couldn't hurt!

RJ