itslogz

My car has been doing this since I bought it about a year ago but just now really cared anough to post. Anyway, with the headlights off, it idles right on 850ish, havent adjusted it down to idle perfect because of this problem. When I turn the headlights on, it lowers about 100 RPM when idling, and the car vibrates slightly rough, not terrible or nothing but deffinetly noticable. So then, i turn the foglights on, and it idles slightly lower and vibrates pretty bad. Turn the foglights back off, and it goes back up a bit and idles less rough. With the headlights off completely, it idles perfectly smooth and normal. I also noticed when I hit the brakes the headlights dim slightly.


Brand new OEM battery btw before anyone says check the battery

Im thinking alternator? Ive got receipts from back to 1994 on alot of work performed on the car (Its a 1993 GSR) and i couldnt find one from where the alternator was ever replaced, so im thinking its got 193k on it lol Wanted to hear some input first off before I go get a new alternator, even though its something I should do anyway since i dont know when it was replaced id still like to hear some opinions first


TIA.

B20_Teg

Well to find out take it off take in to an autoparts store and get it tested. It can be the alt too cause I was running a civic alt in my teg and everytime I turned on the light it idles low and power dims but I might be wrong too... GL

itslogz

Meh i hear autoparts stores will tell you its fine alot of times when its really not so i dont wanna even bother with that one. thanks for the post tho

honda_1

its your alt is bad.

itslogz

orly.