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

[White91TalonTsi]

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 , but AHHH What the hell.

I wiped up most of the acid with somewater and there is minimal damage but still help!!

[djmixerx]

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.

[Red1991TSI]

If your alt is overcharging the battery, that can make it boil over.

[DROOPY209]

My alternator was overcharging my Optima red top, at 17 volts.

The SEALED Optima red top starting spraying out acid from where the grey plastic meets the red plastic....it discolored some paint right by the battery.

You might wanna get a voltage test.

[White91TalonTsi]

What would cause overcharging exactly?

[Sean485]

Faulty voltage regulator. Requires replacement/rebuild of the alternator.

[AWD92TalonTSi]

Originally Posted by Sean485

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

[bsmart82]

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.

[White91TalonTsi]

Ya this is weird stuff, I dont want another car to melt down

[burnnxs]

If i was you i would take some 4ga wire and rewire the alternator while your at it .

[White91TalonTsi]

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

[HOT97ECLIPSEGSX]

That was a mistake. If it was already spraying acid everywhere, why did you turn the car on?

[AWD92TalonTSi]

Originally Posted by White91TalonTsi

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.

[oldman]

Originally Posted by HOT97ECLIPSEGSX

That was a mistake. If it was already spraying acid everywhere, why did you turn the car on?

He was just double checking and being extra cautious.

[White91TalonTsi]

Fucking Fuck now I dont have a car to drive around again

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