Hello, i am new member but experienced Skoda user ...

Felicia 1.6 mpi - 1997...i am having interesting issues on this car....but curently i am trying to do a good job with throttle body..

 

I have cleaned the throttle body with carburator cleaner, but now i want to clean potentiometer, which is inside the TB.

Does anyone tried that? Is there any serious side effects of this action? I will be using spray for regeneration of potentiometer Kontakt PR .

I am posting the pictures of my TB and this potentiometer(TPS) inside of it. There are visible TRACKS where the slider slide...

There are actually two sliders one for the actual position of the gas pedal and the second one is used for idle. I would spray them both...

Reasons  why i want to do this:

1.) Adaptation of the TB would cost me 20 euros, cause i dont have VAG software, and before paying i want to do as much as posibble...

2.) I have noticed that the rev counter needle is making micro dancing in EVERY position (no matter is it idle or 3k revs).

This TB is very old, i guess it's from '97 and it is posibble that the sliders scratched the resistive layer and micro dust makes micro dancing of rev counter needle.

 

Any suggestions would be very helpful.

tnx

 

 

 

 

A few observations:

1 hour ago, Kardanski said:

Is there any serious side effects of this action?

No side effects. Except there is limited chance of success.

I will be using spray for regeneration of potentiometer Kontakt PR .

The spray only cleans. Does not regenerate the carbon. Marginal results for a limited time can be achieved with graphite from a soft pen.

I am posting the pictures of my TB and this potentiometer(TPS) inside of it. There are visible TRACKS where the slider slide...

The grooves will not disappear.

2.) I have noticed that the rev counter needle is making micro dancing in EVERY position (no matter is it idle or 3k revs).

This TB is very old, i guess it's from '97 and it is posibble that the sliders scratched the resistive layer and micro dust makes micro dancing of rev counter needle.

I don't think the "micro-dancing" is related to dirty TPS.

Any suggestions would be very helpful.

My suggestion is to find a new TB.

 

Tnx Ricardo for Your sugesstions, i will try to  spray it and i hope for the best...unfortunately every TB that i find is very old and it is in the similiar shape (not very good).

Well clean it as best as you can you can also try to adjust the wipers a bit to make better contact with the track but that is risky. I think you are actually going to succeed and you really won't have to buy a tb

The carbon material was removed. The surface is not smooth anymore. As I said, cleaning will not put back the scratched carbon. The wiper will still run on grooves. Clean ones but still grooves. Cleaning will have marginal, temporary effects.

1 hour ago, RicardoM said:

The carbon material was removed. The surface is not smooth anymore. As I said, cleaning will not put back the scratched carbon. The wiper will still run on grooves. Clean ones but still grooves. Cleaning will have marginal, temporary effects.

if he adjust the wipers to press harder againts the track wont that give a little more life to the tb

"A little more life" with unpredictable reliability is what I said myself too.

Yet there is more to it. A scratched resistive material means there will be no more linear variation of resistance. No matter how good the contact between the wiper and resistive material will be, the thickness of the resistive material is affected by the gauges in it. Not to mention the wiper will continue to dig further into the grooves.

Unpredictable reliability is a good description for what I have always had after giving a potentiometer a stiff talking to.

 

Its very satisfying to extend the life of a component but when you have to do it a second time it should really only be to tide you over until you can source & fit a new one.