Wear and tear.
As mark B says it is a potentiometer which can work in a variety of ways. Generally there is a carbon track and the output is taken given the change of resistance as the pot turns along that track

If the carbon starts to wear or the pot becomes contimated, then it starts to out put noise which should cause an error code.

I'm surprised it means replacing the whole throttle body as it is a perishable item. (I used to go through 2 a year on my guitar when I was gigging, regularly)

A good clean with some contact cleaner might help, if it is dirt, but if the carbon is worn replacement is the only option

 

I've got the throttle body (with TPS) from Mytse's old engine winging its way to me so I'll try a straight swap for the whole unit and see how we get on - fingers crossed!

 

You need to make sure it is set to the correct position (voltage) at closed throttle too. Not just a case of bolting it on

 

Cable - I would be surprised if it were wear and tear so early on, or contamination (its a sealed unit), especially if it is a carbon pot. IMO, its not really comparable with a pot on guitar where you're exposed to all sorts. Japanese and German manufacturers don't use cheap unreliable comps, the ROW buy these :-) . I don

 

Set what to the correct position? The sensor is an integral part of the throttle assembly so surely it's already set up for that assembly. That being the case I can't understand what setting up would be invovled. Is it not just a case of taking off the old throttle body and putting the new one on and then connecting sensor wires and linkages, etc. I'm not changing just the TPS I'm changing the whole throttle assembly with both TSP and MAP attached.

 

I (personally) have a spoon V.2 avaliable at the moment. all sensors attached

 

[QUOTE=Saxo Boy,Nov 2 2006, 12:36 PM]
Set what to the correct position?

 

My car is still at the garage so I can't look at it but my conversation with the garage went like this:

"You need a new TPS Mr. MacLeod. It's

 

[QUOTE=grantedS2k,Nov 1 2006, 11:52 PM] I have also heard not to mess with the TPS sensor, and having also had an "

 

Normally I apply a 'break it = upgrade it' policy to my cars but recently I've come to realise that I'm going to have to sell the S2000 in which case it'll be going back to standard anyway. I'm just looking to get the car right again as cost-effectively as possible.