voltage sap under braking
maybe im jus retarded...but i got a 91 si with a ls swap and i installed a voltmeter...when i start the car it reads about 13.5 volts and when i brake it drops down to almost 12...im thinkin that isnt normal...any input would be appreciated
Modified by efyou at 12:14 PM 8/10/2005
Modified by efyou at 12:14 PM 8/10/2005
sounds to me like your alternator isnt putting out enough volts..it should be around 14-14.5 when running..do all your lights work and working bright? could be resistance in the wiring causing it to draw more amps than it should..
well it damm well should i bought a new alternator from honda...and my lights are real bright but when i hit the brakes or turn the heat on or my fan switch i see major power sap and it doesnt seem to come bak to normal...so i dunno i replaced the battery cable, battery, alternator and starter all at once lol so im still stumped.
also...i remeber that i had to tighten the alternator belt awhile ago...maybe its not tight enuf?....and....i dont remember any of this happening until i put a diff drivers side door on...sounds strange...but when i did...the seatbelt beep and light kept goin off...so i jus disconnected all the bulbs and destroyed the circuitboard in the rear view mirror so it would shut the hell up lol...maybe thats the first time i NOTICED...i dunno...i have no clue.
ANDDD my brake lights didnt work after i put that door on...but instead my door/seatbelt light kept comin on when i hit the brakes...no powersap there until i replaced the brake light fuse so they work again.
Modified by efyou at 4:58 PM 8/16/2005
also...i remeber that i had to tighten the alternator belt awhile ago...maybe its not tight enuf?....and....i dont remember any of this happening until i put a diff drivers side door on...sounds strange...but when i did...the seatbelt beep and light kept goin off...so i jus disconnected all the bulbs and destroyed the circuitboard in the rear view mirror so it would shut the hell up lol...maybe thats the first time i NOTICED...i dunno...i have no clue.
ANDDD my brake lights didnt work after i put that door on...but instead my door/seatbelt light kept comin on when i hit the brakes...no powersap there until i replaced the brake light fuse so they work again.
Modified by efyou at 4:58 PM 8/16/2005
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by efyou »</TD></TR><TR><TD CLASS="quote">well it damm well should i bought a new alternator from honda...and my lights are real bright but when i hit the brakes or turn the heat on or my fan switch i see major power sap and it doesnt seem to come bak to normal...so i dunno i replaced the battery cable, battery, alternator and starter all at once lol so im still stumped.
also...i remeber that i had to tighten the alternator belt awhile ago...maybe its not tight enuf?....and....i dont remember any of this happening until i put a diff drivers side door on...sounds strange...but when i did...the seatbelt beep and light kept goin off...so i jus disconnected all the bulbs and destroyed the circuitboard in the rear view mirror so it would shut the hell up lol...maybe thats the first time i NOTICED...i dunno...i have no clue.
Sounds like you effed up the wiring somewhere and have a circuit thats grounding out
ANDDD my brake lights didnt work after i put that door on...but instead my door/seatbelt light kept comin on when i hit the brakes...no powersap there until i replaced the brake light fuse so they work again.
Modified by efyou at 4:58 PM 8/16/2005</TD></TR></TABLE>
also...i remeber that i had to tighten the alternator belt awhile ago...maybe its not tight enuf?....and....i dont remember any of this happening until i put a diff drivers side door on...sounds strange...but when i did...the seatbelt beep and light kept goin off...so i jus disconnected all the bulbs and destroyed the circuitboard in the rear view mirror so it would shut the hell up lol...maybe thats the first time i NOTICED...i dunno...i have no clue.
Sounds like you effed up the wiring somewhere and have a circuit thats grounding out
ANDDD my brake lights didnt work after i put that door on...but instead my door/seatbelt light kept comin on when i hit the brakes...no powersap there until i replaced the brake light fuse so they work again.
Modified by efyou at 4:58 PM 8/16/2005</TD></TR></TABLE>
but where would it be? i took the door panel off and looked at all the wiring..even the speaker wire and found nothing wrong..
warped alternator belt? i know when the car isnt warm(middle of h & c) yet and i start driving and hit brakes for long enuf the voltage drop is real bad....but then after that the gauge reads a lil above 12 while driving...ughhhh someone helpppp
Modified by efyou at 8:12 PM 8/22/2005
warped alternator belt? i know when the car isnt warm(middle of h & c) yet and i start driving and hit brakes for long enuf the voltage drop is real bad....but then after that the gauge reads a lil above 12 while driving...ughhhh someone helppppModified by efyou at 8:12 PM 8/22/2005
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