Engine/Belt sqeaking

[91240sx]

Anytime i get above 4 grand my lights dim out and my engine produces a high pitched sqeak. I've heard that its a belt, is it really that minor?

[slipnfall]

Sounds likely to me. Check your alternator belt tension. It's not real easy to get to, but just push on the belt. It shouldn't deflect downwards more than 1/2" or so. If so you need to tighten that puppy up before it slips off. Be carefull not to overtighten, because you're prematurely wear the bearings. There's two bolts to deal with: one that tightens to hold the tension, then another bolt to adjust the tension. Both are 12 or 14mm, don't remember.

[n_bogie]

hum i had a buddy that had a problem almost the same. his ended up to be his alternator. it was getting week and could not put out anuf juice to keep it runing strong.