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-   -   wont start after engine swap (https://www.performancetrucks.net/forums/stereo-electronics-131/wont-start-after-engine-swap-522595/)

LS1TRUCKGUY Oct 8, 2013 07:57 AM

wont start after engine swap
 
im only getting 10.5v at the battery. i had the battery tested and replaced it with a brand new full charged battery. battery shows 14.4v until i hook it up, then it reads 10.5v. ive checked all the grounds i could find and they are good. any suggestions?

BigDaddy0381 Oct 8, 2013 08:06 AM

I had the same problem, I found I missed the ground that is below the power steering pump. I went thru 2 batteries, and tons of trouble shooting.

LS1TRUCKGUY Oct 8, 2013 08:20 AM

i have that one on. i am going to start pulling them off and clean the contact area real good to see if that helps

Tootall Oct 8, 2013 11:17 AM

did you get the one on the back of the engine, right next to the oil pressure sensor?

The braded ground needs to be on the back of the head also

LS1TRUCKGUY Oct 8, 2013 03:42 PM

i put the braided ground on the block next to the oil pressure sensor. there was two small ground wires that were also on the back of the block next to the cam sensor. i will move the braided ground to the head.

LS1TRUCKGUY Oct 8, 2013 03:59 PM

so how many grounds should there be total?
this are the grounds i have:

frame to block behind p/s pump
firewall to to head
coil pack harness to rear of block by cam sensor
another small ground wire from harness to rear of block by oil pressure sensor

javzh Oct 8, 2013 04:52 PM

there are two grounds connected to the same spot behind the p/s pump
i missed one when i did my lq4 swap and i almost went crazy till i figured it out lol

LS1TRUCKGUY Oct 8, 2013 05:05 PM


Originally Posted by javzh (Post 5151405)
there are two grounds connected to the same spot behind the p/s pump
i missed one when i did my lq4 swap and i almost went crazy till i figured it out lol

oh well shit. i only have one there. i will look for the other one when i get home from work

LS1TRUCKGUY Oct 8, 2013 09:19 PM

Got it. It was the 2nd ground behind the p/s pump.

javzh Oct 8, 2013 11:24 PM


Originally Posted by LS1TRUCKGUY (Post 5151507)
Got it. It was the 2nd ground behind the p/s pump.

:cheers: :burnout:


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