2007 Hummer H3 Won't start

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Mar 27, 2014 | 04:55 PM

#21

hummerz

Senior Member

Joined: Jul 2012

Posts: 8,971

From: C-Town

Quote:

Originally Posted by Hummerbass

Ok so I has new motor installed, and still hummer isn't staying cranked. Can someone please assist me with this issue.
When I stick key in ignition, car turns on, cranks, spins over, but does not stay cranked unless I step on gas pedal.

Why did you start at the engine?
Did you check for trouble codes?

I can give you a list of potential causes:

maf
map
cas
tps
tbi
fis
fpm
pcv
ecm
++++++++++++many more

Scan the computer for codes and post them.

Mar 28, 2014 | 03:32 AM

#22

Hummerbass

Thread Starter

Junior Member

Joined: Jun 2013

Posts: 12

When it happened, I did something extremely stupid, removed the battery cable. But my old engine was going out anyway, so replaced it for a hell of a deal. 1100 installed for a engine with 32,000

Mar 28, 2014 | 05:08 PM

#23

drewshouse62

Junior Member

Joined: Mar 2014

Posts: 2

i am new to forum. had 07 h3 since july 07. bought new. Ihooked a battery to wrong terminals. fried alternator. got new one checked that it was good. it doesnt seem to be sending a charge to the battery and the charging system symbol stays on in dash. helllp please.

Mar 28, 2014 | 06:11 PM

#24

hummerz

Senior Member

Joined: Jul 2012

Posts: 8,971

From: C-Town

Quote:

Originally Posted by drewshouse62

Try starting a new thread.

Last edited by hummerz; Mar 28, 2014 at 06:14 PM.

Mar 29, 2014 | 03:36 PM

#25

Hummerbass

Thread Starter

Junior Member

Joined: Jun 2013

Posts: 12

Quote:

Originally Posted by drewshouse62

Thread jacking lol

Mar 9, 2016 | 02:22 PM

#26

H0duck1

Junior Member

Joined: Mar 2016

Posts: 1

Megafuse

Quote:

Originally Posted by drewshouse62

There is what they call a MEGA fuse inside the fuse box under hood. I had the same exact thing happen to my truck. This is first vehicle I've ever seen that is fused between alternator and battery. Only a couple bucks at part store and super easy to replace. It actually bolts in to the fuse box if I recall corectly.