Quote Originally Posted by KWAWD View Post
I notice that the ISC gets dirty and I wonder if these should be replaced at regular intervals instead of waiting for them to fail. They do seem to fail, with a few threads on these forums about idle issues that turn out to be the ISC playing up. It must be the carbon, oil and hot/cold cycles that do them in. I'd guess the shaft gets sticky and the internals wear.
Not so much the TPS, as far as I can tell.

With my recent idle issue and ISC replacement I found that theres a number of ISC's for Magnas on the market with a wide range in prices from $130 up to $800.
I wonder if theres a preferred brand thats more reliable and longer lasting than others?
Do any of the mechanics here have a feel for this? What brand ISC's should we be looking at and what price is reasonable?

Or would those who have purchased a replacement ISC make any recommendation of any brand given their experience?
I've seen 3 different types used on my 3rd gens over the years and they seem to be common mitsubishi parts made by denso from memory.

Usually though it is the ISC seal that fails. It gets old and cracks or a vac leak makes the ISC have to work harder then causing the fail.

Mike