Thread: Not this again.
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Old 07-16-2018, 08:01 PM   #1770
LS1ow
Power Member / trans break does not equal transbrake
 
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Alright, so tuner came by today again and we made some progress... ...on figuring out what’s wrong.


With the stock, known good injectors it was still running like crap. We loaded in some tunes he had from other A4 LS cars with similar set ups just to see, and nothing. Running like butt, and still nothing reading on the wideband.

So next we decided to shut off injectors 1 by 1 with the HP tuners, and boy did it get funky. We did it in order, 1-8.

Shut 1 - no difference
Shut 2- engine began to die
Shut 3- nothin
Shut 4- engine began to die
Shut 5- nothin
Shut 6- begins to die
Shut 7- nothin
Shut 8- begins to die.


You see what’s up here ? HP tuners doesn’t let you shut off more than 1 at a time apparently, so I unplugged all of bank 1 sensors, 1 by 1, until there was NO INJECTORS plugged in on the driver side, and it didn’t change the engine running condition 1 bit. Headed to the passenger side, soon as I unplugged an injector it began to die.

All my driver side injectors are dead. Which explains why my wideband is only reading lean! Also explains why I burnt my hands unplugging the passenger side injectors, but the driver side was just radiant heat.

That leaves me with A. Harness is messed up or B. PCM is messed up. Amirite?
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99 Z28 - SBE LS1/60e
Motor - 10.84 @ 128 - 1.47 60'
Nitrous - 10.16 @ 132 - 1.40 60"
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