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So why the hell did battery acid spray everything under my hood?

12K views 31 replies 16 participants last post by  1badgvr4 
#1 ·
Sup guys, I justr put in a BRAND new battery today and terminals and has replaced my alternator about a month ago.

I drove the car around today on a hot day for about 2 hours applying for jobs so it was alot of driving..and it ran just fine. I park the car at my house and pop the hood to let it cool down a bit faster and I notice...WTF this cap from my battery is completely blown off and there is acid sprayed all over the top of the hood (Not a stupid amount but you can see where it ate the paint).

*This isnt my actual battery but one of those caps that say "danger poison etc" was blown off and I found it in the engine bay.
I have no clue how long I was driving it liek this BUT WHAT THE HELL IS GOING ON HERE!, car was running fine and had no voltage issues going on. I did notice my windows were rolling up extra fast:confused: , but AHHH What the hell.

I wiped up most of the acid with somewater and there is minimal damage but still help!!
 
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#2 ·
baking soda and water will take it out. I dont think only water will kill the acid. Damn you have some bad luck with yours DSM's.
 
#7 ·
Sean485 said:
Faulty voltage regulator. Requires replacement/rebuild of the alternator.

Yea either check voltage at the battery while you rev. My old Probe had the regulator go bad and it had a volt meter on the dash. At anything less than 3k rpm it would read normal. After that it would go up to 18v, then things started turning off; the radio, the dash lights. Once you would bring the revs back down everything would come back on. (Oh yea, wear safety glasses and a long sleeve shirt while you do this, just in case it blows again :) )

Or take the alt. out and go to the 'Zone and get 'er tested.

Bryan
 
#8 ·
There is a good posibility that your alternator is over charging. I once saw a VW Jetta that was over charging and the battery semi-exploded and covered the engine bay with acid. I also had a Merc Grand Marquis that was over charging that fried the ecu, ip cluster, and the radio. I would get the alt tested for correct output, voltage and amperage.
 
#11 ·
Okay I just turned it on and in less than a minute I witnessed the other cap BLOW off and liek shot itself out of the engine bay. Im going to go get a multimeter..FUCKKKK
 
#13 ·
White91TalonTsi said:
Okay I just turned it on and in less than a minute I witnessed the other cap BLOW off and liek shot itself out of the engine bay. Im going to go get a multimeter..FUCKKKK

step 1. pull alternator
step 2. have it tested
step 3. buy new alternator or battery.
 
#15 ·
Fucking Fuck now I dont have a car to drive around again :rolleyes:

Ill pull it off tomorrow and see if my mom can drive to get it tested:rolleyes: , I just got a new alternator and battery so FUCK FUCK dizz you let me down!

:wall:
 
#17 · (Edited)
I dont get why you sound so angry over something very common on this cars?
The first time my alt took a dump on me i had a 1200w sony explode with no cap so i figure it was normal and installed a rebuild one from a friend. six months after, It went bad again , So this time i get a new battery along with a alt from the junk yard that tested good . Sure thing after four months goes bad. Again ,A new battery and a "new" rebuild alt and only after 2k of driving it fried!,Althought this last time im using a o2 housing eliminator dp from dejon and it is a tight fit .
Now a new ecu, rebuild alt rewired it with 4ga wire pos+ and neg-, And build a heat shield, because i dont have enought money for a relocation kit. So far so good:D
 
#21 ·
Well I walked 5K with 2 alternators in my hand to get them tested, wow that was hard. Turns out the one has a bad voltage regulator.

Threw my old (good) alt that was tested and I fixed the problem :)

On the drive though my cars not going into gear like at all and theres a loud whining and gringding when I depress the clutch...FUCKKKK DSM!
 
#23 ·
White91TalonTsi said:
Sup guys, I justr put in a BRAND new battery today and terminals and has replaced my alternator about a month ago.

I drove the car around today on a hot day for about 2 hours applying for jobs so it was alot of driving..and it ran just fine. I park the car at my house and pop the hood to let it cool down a bit faster and I notice...WTF this cap from my battery is completely blown off and there is acid sprayed all over the top of the hood (Not a stupid amount but you can see where it ate the paint).

*This isnt my actual battery but one of those caps that say "danger poison etc" was blown off and I found it in the engine bay.
I have no clue how long I was driving it liek this BUT WHAT THE HELL IS GOING ON HERE!, car was running fine and had no voltage issues going on. I did notice my windows were rolling up extra fast:confused: , but AHHH What the hell.

I wiped up most of the acid with somewater and there is minimal damage but still help!!
You know this makes me begin to wonder about Interstate batteries. I work at my local AutoZone and just the other day a woman came in and her battery was doing the same thing. It was swollen so bad it was about to pop. Man I would suggest having your alternator tested to make sure its not charging too much and find another brand of battery.
 
#24 ·
I fixed the problem almost...its still at 15.1V when driving...overcharging still but not exploding battery tops...

Now my trannys fucked and I cant even drive the car and I have no money :rolleyes:
 
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