HELP! Truck shutting off

HELP! My truck been shutting off, can't figure it out, my truck is currently stuck in school parking lot.

Had Alternator tested its good
Just installed new optima battery today
Unplugged alarm
Noticed my stereo shuts off, so I unplugged it in parking lot.

Truck drove great today thought unplugging alarm,and new battery did the trick; got gas, car wash, got to campus parked and my ASB e brake, air bag light came on..

Not sure what to check or where to go from here.

 

Does it die, no fuel like. Or turn off like the battery or alternator died?

 

I'm not a mechanic, but I have heard of people unplugging the battery for 15 minutes or so to allow the computer to reset itself. May not be the fix, but it is worth a try while you are researching.

Good luck, and let us know what you find.

 

If it's an intermittent issue... I had an issue in my old Kia where the power would randomly go out. Traced it down to the connections coming off the battery (battery itself was fine, but the connections coming off the battery had corroded inside the wire).

Easy enough to test with a multimeter, or you could try cleaning the ends of the connections w/ a brush.

 

I had something similar with my integra, it needed a new electrical relay

 

I feel it's defiantly electrical, truck sounded like it wanted to die while it was idling with the lights on. I turned it off and couldn't start it again new battery dropped to 7.7 when I popped the hood and checked before class.

Where is that relay located, I'm gonna go check fuses right now truck is more important than human sexuality right now.

 

Isolate the problem. Unhook everything and check voltage.
As stated above. Check for corrosion, and check fuses. It'll probably be something simple if it has to do with dropped voltage.

 

Make sure that everything that is going from the battery to the alternator is nice and tight. Alternator might not be running a full cycle with the battery. Or maybe, maybe might be the fuel filter.

 

Get that new battery tested, it might be faulty. 7.7V is a sign of a huge draw, no charge, or a faulty battery.

 

Not battery last battery was 12v and still is. I got jumped thinking I could make it home but nope, truck barely made it out parking lot, it was dying the whole time like I had no gas.

 

Any updates?

 

I'm confused. In your previous post you said the battery was 7.7, am I right to assume you ment voltage? Now you're saying 12V, can you explain?

 

Well I think I found the problem, my driver side engine mount gave out, the whole engine is resting On the alternator..

 

Awe shit.....
That'll probably do it.

 

05's / 06's weak motor mounts


07's and up Toyota realized there problem and changed them.

 

That sucks.

 

That is the motor mount perch on the left side its cracked 3/4 the way around it and pushed in 1/2" or more.

it was so difficult because the motor is laying in the truck all tweaked over to the left, resting on the alternator. The alternator may be functioning properly out of the truck, but its not charging the system.

Tough to say why its not charging right now, we are thinking because its resting on the connector, its pushing it in a way that does not allow good solid contact on through the connector plug itself.

 

Damn that sucks...I would freak out if that was mine

Sub'd

 

That's a bummer. Do you beat on it pretty hard? I guess I should move motor mount gussets to the top of my list.