Battery drain & cceleration miss-power

[bogdanc]

Greeting
I have a Hummer H2 SUT 2007 50,000 kilometers, I have a problem with the battery consumption and acceleration when I give kick-down, if i do not start the car 2-3 days i,m running out of power, the battery is NEW! RED TOP OPTIMA, I tried unsuccessfully to track consumer, I disconnected OnStar , cdplayer aftermarket, the amplifier and subwoofer, i measured with the multimeter the consumption and is about 0.07 Amps / h (normal I would say) all to no avail, the consumer is clearly intermittent and i can,t find it is very stressful.
Another problem I have when suddenly accelerated, sometimes the car accelerates to full capacity sometimes not.

Any advice is welcome.
Thanks

 

[alrock]

You've had the same battery issues with two batteries? Sounds like an issue that you'll have to keep pulling out that multimeter and catch it when it's draining. However, as I think about it, I would start with the easy stuff - check the battery connections. Check for worn out battery cables. How's the alternator?

As for the acceleration, it could be a weak battery that causes that issue, and/or the electrical issue. A bad signal could be interfering with the accelerator and/or the throttle body.

If you have a big stereo, you may have worn our that alternator a bit early.

 

[Renagade132]

Is the battery new and you let it drain completely and then have to recharge it? Because I know those Optima and also Odyssey batteries, both need a special charger! Regular chargers don't work, and can even damage those batteries!

 

[twinmill28]

Make you a deal, you spot the plane tickets and I'll fly out and give her a look over. I've heard Romania is quite.....gothic this time of year. (somehow I have Scooby Doo in my head---Zoinks!)

Seriously, like Alrock said, I'd look at the alternator as your problem if you're not playing the stereo too much without the truck running, those amps will drain a battery in short order

 

[bogdanc]

The batt is NEW! and is charged to FULL! it s ok ,the alternator it s ok 14-14,4 V constantly , battery connectors are new,i do not use stereo every day and after i drive some km/miles i mensure the batt after i stop the car and i have 12,4-12.5 V this is good,after a day i have the same voltage after 2-3 days i have 9-10 V WTF!,sometimes after i day i have 9-10 Volts ,alternator is good and is charging the batt at full capacity,other consumer is the problem and a don t know wich is it, ill replace soon all the negative earth connection maybe i have luck

 

[4speedfunk]

Check the brake light switch.

 

[Scarsman]

Check the brake light switch.

What about the brake light switch? I haven't heard anything about that before.