Runs perfect! Then dies?!
Thread Starter
Teching In
Joined: Dec 2003
Posts: 48
Likes: 0
From: San Diego
Runs perfect! Then dies?! Hey everyone, I have a problem with my LS1 on an engine stand. The engine runs, but only for about 5 seconds. After that, it shuts off on its own. Its not a fuel pressure problem, its not spark, and its not air delivery.. so I'm wondering what could be causing it. Just to fill you in on my wiring situation, I will try to lay it out clearly, and maybe you can give me some expert input.
On magnus' wiring spreadsheet, I have all pink wires on the C-100,101, and 105 plugs running to the ignition switch that require "Hot in start and run". This includes the IGN/INJ banks 1 and 2, the PCM hot from ignition, and a few others.
C-10x orange wire that runs to the always hot on the ignition switch is hooked up. I have the Ground hooked up, and I have the fan1 and fuel pump relay hooked up. I believe that is all.
Like I said, the engine runs for a few seconds, revs pick up, and then shuts off on its own. otherwise it runs really smoothe. The engine is on a stand with no coolant in it (yet - that goes in tonight) and mid oil level. Also, the engine is hooked up to the 4L60E tranny, but I had to swap a manual's PCM for mine cause mine's crunched (could that cause this?) Any input is appreciated!
Thanks,
Randall Lowe
On magnus' wiring spreadsheet, I have all pink wires on the C-100,101, and 105 plugs running to the ignition switch that require "Hot in start and run". This includes the IGN/INJ banks 1 and 2, the PCM hot from ignition, and a few others.
C-10x orange wire that runs to the always hot on the ignition switch is hooked up. I have the Ground hooked up, and I have the fan1 and fuel pump relay hooked up. I believe that is all.
Like I said, the engine runs for a few seconds, revs pick up, and then shuts off on its own. otherwise it runs really smoothe. The engine is on a stand with no coolant in it (yet - that goes in tonight) and mid oil level. Also, the engine is hooked up to the 4L60E tranny, but I had to swap a manual's PCM for mine cause mine's crunched (could that cause this?) Any input is appreciated!
Thanks,
Randall Lowe
Thread Starter
Teching In
Joined: Dec 2003
Posts: 48
Likes: 0
From: San Diego
Originally Posted by 96SCTA
Well I had a simualr problem Car would run fine in open loop. As soon as it entered closed loop it would die. Turned out to be bad o2 sensors.
(THEY WERE BRAND NEW )
(THEY WERE BRAND NEW )
See this doesn't even get to closed loop. It literraly runs for about 5 seconds.
Originally Posted by xjarayax
VATS bypass?
Clint
Trending Topics
agreed vats.
the coolant level sensor is not related to the computer, just a idiot light on the gauge.
The coolant temp sensor, is computer controled, but should be fine for running 30 seconds or so, before i would be concerned about heating issues.
Ryan
the coolant level sensor is not related to the computer, just a idiot light on the gauge.
The coolant temp sensor, is computer controled, but should be fine for running 30 seconds or so, before i would be concerned about heating issues.
Ryan
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