Farmer Joe Posted August 6, 2009 Report Share Posted August 6, 2009 so i noticed that my truck has been making a buzzing sound latley. at first from where the sound came from i though that it was a bearing going bad in the transmission. it kind of made a whirring buzzy sound. but then i got to listening. when i would rev up the truck it was flat go away. so a transmission bearing. went and popped the hood and listened around and founf that the buzzing was coming from the voltage regulator. so what would cause the voltage regulator to buzz? i already have put a different regulator on it and it still makes the same buzzing sound, just louder cause its got a new regulator on it. not get this. when the truck is idling it makes the buzzing sound. not charge light at idle. but when i rev up the truck, buzzing goes away and the charge light comes on gradually as the revs go up. also this started happening really bad on the way home from work tonight. and i have to drive 30 miles home. so on the way home, i have the tunes cranked up and i turned on my lights and the charge light starts coming on just a little. hit my turn signal and when it flashes the charge light gets a little brighter every flash. turned the tunes off and the charge light goes back down a little. now as im driving and as i bring the revs up in each gear the charge light gradually comes on till its lit up all the way. this is prolly around 3500rpms when it comes on all the way. on my way home i was prolly doin about 60-65 and thats around 3200 rpms, and the charge light stays on on flickers brighter every once and a while. so what seems to be the issue? alternator toast? it didnt wear down the battery and my headlight didnt get dim, so whats the deal? i are confused. any help would be great! thanks in advance Quote Link to comment
ggzilla Posted August 6, 2009 Report Share Posted August 6, 2009 Replace the Regulator. Quote Link to comment
Farmer Joe Posted August 6, 2009 Author Report Share Posted August 6, 2009 Replace the Regulator. already did. still makes the same buzzing sound, just louder now... Quote Link to comment
izzo Posted August 6, 2009 Report Share Posted August 6, 2009 had a similar experience in my sentra turned out had to replace the alternator. alt light would stay off at low rpms. turn on at high rpms. it was over charging and i blew out a buncha lights in the car. Lucky thats all that went. soon after it died on me in the street lol. Quote Link to comment
Farmer Joe Posted August 6, 2009 Author Report Share Posted August 6, 2009 damn i knew its the alternator. dammit now i have to get up early and change that bastard. its a real pain in the ass with the AC pump right on top of it... grrr. well at least i have a spare. i hope it works... grrr Quote Link to comment
izzo Posted August 6, 2009 Report Share Posted August 6, 2009 im not 100% sure thats it thats just what happened on my sentra :D Could be something else?? let one of the more mechanically inclined speak up before you take my word Quote Link to comment
Farmer Joe Posted August 6, 2009 Author Report Share Posted August 6, 2009 yeah. well ill see what anyone else has to say in the morning. i will add one more thing that might help someone figure this out. now when the truck is running at idle and i take the plug out of the back of the alternator the buzzing stops and the engine idles up alot. it seems like the alternator is workin too hard. hmmm Quote Link to comment
Loz Posted August 6, 2009 Report Share Posted August 6, 2009 so how did it work out for you. I would be pretty confident that cure worked. Whats' the news? Quote Link to comment
Loz Posted August 6, 2009 Report Share Posted August 6, 2009 ps. the hight of your truck is just perfect! Mine should be like that soon! Quote Link to comment
Farmer Joe Posted August 6, 2009 Author Report Share Posted August 6, 2009 well got up early this morning went out and started the truck... and no buzz from the regulator. and no charge light coming on... so now im really confused. i did swing by my moms place and picked up my spare alt and a set of tools just in case. i dont get this truck... i turned on the lights, the heater fan, turned up the music in the truck real loud and the charge light stayed off. hmmm i dont get it. Quote Link to comment
420n620 Posted August 6, 2009 Report Share Posted August 6, 2009 whats the condition of the belt, just maybe its slipping some and causing ur prob. :confused: Quote Link to comment
Farmer Joe Posted August 6, 2009 Author Report Share Posted August 6, 2009 whats the condition of the belt, just maybe its slipping some and causing ur prob. :confused: the belts prolly only 6 months old. i did check it too. its still good. Quote Link to comment
CharlieBucket Posted August 6, 2009 Report Share Posted August 6, 2009 my voltage regulator was doing the same thing, and my truck was acually dieing. replaced the the regulator and it stopped buzzing, but i still get a little charge light now and then. i assumed alternator, but my belts are really old. but replacing the regulator did stop the buzzing for now. Quote Link to comment
banzai510(hainz) Posted August 6, 2009 Report Share Posted August 6, 2009 you sure its the voltreg??????? not a choke relay nearby? but this will help buy this every body should run a volt meter of some kind so you can catch these thing. Dont rely only on the dash light. By then its already too LATE!!!!!!!!!! http://www.amazon.com/Equus-3721-Bat...ag=online0a-20 also upgrade to a solid state volt reg if you have a external volt reg. Quote Link to comment
g-mam Posted August 7, 2009 Report Share Posted August 7, 2009 you sure its the voltreg??????? not a choke relay nearby? but this will help buy this every body should run a volt meter of some kind so you can catch these thing. Dont rely only on the dash light. By then its already too LATE!!!!!!!!!! http://www.amazon.com/Equus-3721-Bat...ag=online0a-20 also upgrade to a solid state volt reg if you have a external volt reg. I just ordered one of these, cheap, also gives me a clock, thermometer, etc. $27 at Amazon. Quote Link to comment
Farmer Joe Posted August 8, 2009 Author Report Share Posted August 8, 2009 so i dont know what happend with the problem. started the truck up yesterday when i was going to work and the buzzing didnt happen. so drove to work and back with no problem. then on the way home from work tonite, i get to the gas station, shut the truck off and get my gas. when i get back in the truck and start it up the buzzing starts back up and the charge light comes on full force! so i drive to another parking lot to see if the light will go off and it doesnt. pop the hood, the regulator was buzzin like a mofo. unplug the alternator and the lights dont dim. the buzzing just stops and the engine idles up a bit from not having the load on it. so i plug the alternator back in, and i pulled the negative off the battery and itll run for like a second and then the lights dies out and the engine dies. so i just said fuck it. ill drive home. if the battery takes a shit who the fuck cares lol. oh yeah i forgot about the cop that asked what i was doin in the parking lot when i was messing with the alternator. he strolls up and asks whats going on. so i tell him what happend in super great detail like i did here, and he was all "well... um if youve got it handled than ill be on my way". the whole time he had a 'duh' look on his face and was lookin for my alternator on the driver side under the distributor. so i jump back in the truck and head on my way and the charge light it just bright as fuck. so im like, well how the hell is my lights not dimming out? when the revs go up all the lights get brighter, including the charge light. so i figure there just something crossed in the altermator and its making the regulator freak out and the charge light come on. then i came up to an stoplight that was changin from green to orange and i went from 5th to 3rd and revved the fucker out, and then the charge light went off and all the lights got brighter. jumped on the freeway, got all the way home, and the charge light never came back on... i guess its just something loose in the alternator thats crossing and causing the issue. so when i get my next days off im gonna change the alt to the other one i have and see what that does. Quote Link to comment
g-mam Posted August 8, 2009 Report Share Posted August 8, 2009 I changed mine yesterday. It worked on and off like yours. Finally spent the $35 and called it a day. Quote Link to comment
banzai510(hainz) Posted August 8, 2009 Report Share Posted August 8, 2009 G man that a cool gizmo. Farmer Joe Have you cked the voltage? That would be a start. als clean the battery cables What di you unplug from the alternator. The red/wht wire or just the T connector. If you remove the T connector I usually dont notice a change either in my 521. I run a volt meter and I had good voltage. Bucket on here recently had a buzzing regulator and he swapped it and all is fine now. I assume it s mechanical type. But I have seen when you rev a motor up then the lights go out to be the brushes in the alternator. as there are barely touching, so ifyourev the shit out of it the slip rings will make contack. all can suggest is clean the cables or get new ones. Make sure the hood is not hitting the battery. put + side of battery toward the firewall. ck the volatge get a solid state volt reg(if external type) get ready to get a new or another alternator. Quote Link to comment
Farmer Joe Posted August 11, 2009 Author Report Share Posted August 11, 2009 well i changed the alternator today to the spare one that i had. problem solved... the one i took off made alot of noise when i would spin it. so it was done... Quote Link to comment
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