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  #21  
Old 09-10-2013, 01:18 PM
64stacey 64stacey is offline
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Keep us updated please!
Thanks
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  #22  
Old 09-15-2013, 10:01 PM
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Replace the TPS and report back.
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  #23  
Old 09-16-2013, 02:07 PM
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Did anyone check the plenum gasket? Try this. Disconnect the battery as to reset the computer. Let it sit a few minutes, then re-connect and see if it'll start. If it starts and runs, it will no doubt re-learn whatever is the problem and shut down again. Does it shut down in 2-3 minutes, or will it run 10-15 minutes, or til you shut it down beyond that amount of time? If it starts, will it rev freely? Using any oil?
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  #24  
Old 09-18-2013, 12:27 PM
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As I was reading through this thread I was thinking the ECM reset was a good starting point. So you get Gen1.

I've also noticed that it wasn't mentioned before. Once the battery was changed after the AC issue the engine gremlins seemed to be a side effect.

Disconnect the battery and cycle the key to start once to do a full system drain and hook it back up and take it for a ride.

The problem with a "fuel system flush" is that if there is debris in the line, it gets pushed to the injectors if they're not pressure cleaned. You can unhook the injector rail and empty it. (pull the battery cable or pump fuse) Get the truck up to operating temperature, then pull the rail as stated above. Pull the shrader valve from the fuel rail and fill it with sea-foam. Re-install the valve and fire it up while it's still warm.

That's the backyard way to get as much concentrated cleaner under pressure to the injectors. You can also buy a test noid to check them for pulse.

I further question the removing the exhaust and releasing the back pressure to start it. It seems odd and causes me to consider if the Cat that was installed has sufficient flow. Even a new Cat expands under high temperature. If it's too small the truck can't pull air in if it can't push the exhasut out.
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  #25  
Old 09-22-2013, 06:22 AM
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Today, I disconnected the battery, cycled the key, waited about 30-45 minutes and reconnected. During the down time I took the Champion plugs out, put the NGK's back in to see if any difference. Spark plugs had a ton of fuel on them. I started it up, and it ran normal, and then when it heated up, started the same old misfiring/backfiring. I can ease into the throttle and not have any issues, but if I step on it, it just falls on its face still.

Also I hooked one side of the exhaust back up to the manifolds(the other side bolt snapped in half on me), and it was near dark so I was unable to get new bolts in(but I did get some). Will put them in tomorrow. I noticed I was able to hear sufficient flow through the cat, and out the tailpipe once again. Because there is no muffler on, and it's much more throaty. Will get the new bolts on this afternoon and update yet again. But I am still seeing no change.

We looked deep inside the throttle body, as far as we could see, and could not see any oil building up down there.

@Gen1dak It doesn't normally shut down on it's own. It is always under throttle, and mostly when you step on it(IE: Pulling out into traffic from stop sign), and after it warms up idle is rather rough. When I step on it, it falls on its face, and when it shuts down, it takes a huge gasp for air down the throttle body(best I can explain it). It more or less seems that it's relieving pressure, rather than sucking air in, when it is shutting down. I hope this makes sense, if not I can try and make a video. =/
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  #26  
Old 09-24-2013, 06:51 PM
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After that explanation I'm going to go with the Hall Effects pick-up in the dist.

I have nothing else to add...except that I'm 98% sure that's your problem without being there to see for myself.

What say you Gen1. Runs fine until warm...

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  #27  
Old 09-24-2013, 11:29 PM
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Quote:
Originally Posted by Warlock III View Post
After that explanation I'm going to go with the Hall Effects pick-up in the dist.

I have nothing else to add...except that I'm 98% sure that's your problem without being there to see for myself.

What say you Gen1. Runs fine until warm...

^^^^^agreed^^^^^
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