Retired Army Vet (Hooray)

[John Lu Hernandez]

:whaa: Hello you good ppls, need some serious help if someone could please help me out most appreciated, have a 08 Hummer H3 5cyl, it has been in the shop for a wk but finally got it out friday, thinking it was the throttle body as i was told by the mechanic so i bought that for $325 then had to pay a $125 to get it programmed, so i drove it now have the same issue. the wife took it to work that monday she said it started makeing that ding ding noise like the seat belt was off then it starting loosing power so she just pulled over i couldnt go get her since this was our only vehicle. so i finally got a ride to her and drove it to our mechanic we have thats when he told me the throttle body he tried to clean the old one but it didnt do anything so i bought the new one,, and took the truck friday mourning to the dealer to get it programed. that cost the $125, but that didnt help still have the same issue, after it runs for a bit it starts idleing ruff loosing power, no codes tho and it hasnt over heated.just got a oil change a cpl of mos ago. so any help would be greatly appreciated, thanks lu seems like after the eng has been running it starts acting up. cause it wont do it right away, my son inlaw said maybe the map but dont want ot buy that till i get a lil more info first.cause already spent $600. dont have that much after xmas shopping for the gkids, i got 18 grandkids.lol

 

[Renagade132]

Did you have the Alternator and battery checked?

 

[deserth3]

I agree with renegade. Check battery and alternator. Also check battery connections

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[Hunner]

Thank you for your service!!

I think that is strange to have to replace the throttle body rather than cleaning it.

Maybe the same guy sprayed the MAF with throttle body cleaner or bent it. There is a specific cleaner for that part.

Check and clean cables at battery as suggested but also check where the ground is to the body.
The best thing is to remove it, grind or sand off the area it contacts and reconnect.

It could be that intermittent connection to the brain no keeping power on.
Just a thought, but could help prevent it in the future.

 

[Cyouincourt007]

Welcome and thank you for your service. Last time I heard of something like that happening was a battery terminal wire issue and alternator, also had buddies stang 5.0 doing that years ago and long story short after he spent lots of doe and finally asked my buddy and me ...with a maf sensor cleaning(via spray) problem was resolved.
let us know what's up, thanks.