Battery voltage at WOT?

Pages: [1]

« previous next »

Author

Topic: Battery voltage at WOT? (Read 5366 times)

smurfbus

Jr. Member

Karma: +0/-1
Offline

Offline

Posts: 38

	Battery voltage at WOT? « on: July 15, 2012, 12:53:37 PM »

Has anyone logged battery voltage at WOT? Mine seems to bounce between 13.6V and 12.6V? I 've been having some sort of power loss when WOT and 3rd gear 5000rpms and 4th gear 4000 rpms. From the logs I can see that at those rpms my Battery voltage drops 1V!

Just curious if thats normal.


	Logged

professor

Sr. Member

Karma: +25/-0
Offline

Offline

Posts: 409

	Re: Battery voltage at WOT? « Reply #1 on: July 15, 2012, 12:58:22 PM »

Think its not and strange.
Mine is constant at 14V and with lights on at 13.4V.
Dont know if air vent to cool fluids are that power/amp eaters.


	Logged

Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©

nyet

Administrator
Hero Member

Karma: +608/-168
Online

Online

Posts: 12270

	Re: Battery voltage at WOT? « Reply #2 on: July 15, 2012, 02:37:26 PM »

Definitely not normal.... alternator issues?


	Logged

ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex

smurfbus

Jr. Member

Karma: +0/-1
Offline

Offline

Posts: 38

	Re: Battery voltage at WOT? « Reply #3 on: July 15, 2012, 11:45:21 PM »

I changed the voltage regulator/brushes of the alternator 3 yrs ago but the rest of the alternator might be going bad?

3rd gear graph:

So voltage should stay at 14V on full WOT too. I haven't seen any logs where voltage was graphed.


	Logged

nyet

Administrator
Hero Member

Karma: +608/-168
Online

Online

Posts: 12270

	Re: Battery voltage at WOT? « Reply #4 on: July 16, 2012, 09:15:46 AM »

I'll try to get a log time permitting

BTW ecuxplot has an "export" function. You dont have to take a screen shot Wink


	Logged

smurfbus

Jr. Member

Karma: +0/-1
Offline

Offline

Posts: 38

	Re: Battery voltage at WOT? « Reply #5 on: July 16, 2012, 09:55:33 AM »

I just checked and the voltage gauge shows solid 14 when the power brakes up at 3500-4000rpms.


	Logged

prj

Hero Member

Karma: +1072/-481
Offline

Offline

Posts: 6037

	Re: Battery voltage at WOT? « Reply #6 on: July 16, 2012, 01:31:05 PM »

Check the positive and negative terminal on battery, make sure they are 100% tight and that neither of the leads is getting hot.


	Logged

PM's will not be answered, so don't even try.
Log your car properly - WinOLS database - Tools/patches

smurfbus

Jr. Member

Karma: +0/-1
Offline

Offline

Posts: 38

	Re: Battery voltage at WOT? « Reply #7 on: July 16, 2012, 01:39:25 PM »

Will do but one week later as the car is going for paint boot for a week now. I know the terminals are not loose (but possibly not tight enough) as I regularly put my charger on the posts for new code flash but dunno if the battery or terminals are getting hot.


	Logged

prj

Hero Member

Karma: +1072/-481
Offline

Offline

Posts: 6037

	Re: Battery voltage at WOT? « Reply #8 on: July 16, 2012, 01:59:02 PM »

Well, it's an easy thing to check. Last time I had this problem was the positive terminal was connected badly and getting very hot. Probably moved around on WOT


	Logged

PM's will not be answered, so don't even try.
Log your car properly - WinOLS database - Tools/patches

Pages: [1]

« previous next »

Jump to:

Navigation

Personal Tools

November 27, 2024, 12:50:03 AM

Welcome, Guest. Please login or register.
Did you miss your activation email?

Navigation

Personal Tools

Search