Look for the basic stuff.Originally Posted by dmahlikGT
1) Does it wobble - to much end play or run out
2) Pulley surface – is it scored, worn or some how damaged. This was a common maintenance item for years on GPs because some were made of plastic and didn’t last long. On my 08 the pulley is metal, and yours should be too, they last longer but not forever.
3) Rotation- does it spin without catching and freely with little resistance
4) Tension- there are tension indication marks on the base of the unit if you look closely, proper tension will have the middle of three marks line up with the mark on the arm.
Also just to explain the MAF cleaning a bit. It is super easy, use MAF cleaner or electrical contact cleaner and spray the MAF wires. That is it; don’t wipe/touch/breath on them. Handle it with care and you will be fine, slam it around or play with it and you will be needing a new one.
