First off, there are a lot of assumptions going on here. It appears to have been established that it has a V-6 engine. BUT, there are TWO V-6s that were available that year. There was the SOHC engine which is VIN code "E" and then there is the "pushrod" engine, VIN code "X." Right now, I will go on the assumption that it is the "E" engine. Cam position sensor can cause the condition you have. Crank position sensor will cause a strictly no start. Won't even pop. PATS Anti-theft can cause this problem. "THEFT" light should blink slowly when the engine is off and key removed. When attempting to start it, the "THEFT" light should go off after about 10 seconds or so. If there is a problem with the PATS system, the "THEFT" light will blink rapidly when you try to start it. As far as I know, the knock sensor will not cause a no start condition. I might be wrong on this one, but I am more inclined to think that this is not your problem. Any missing sensors could also be a problem. I seem to recall that you had an unconnected connector in the vicinity of the air cleaner. This would have been for the mass air flow sensor. This is a VERY important sensor, as it is the main sensor that the computer uses for mixture control. Depending on the engine and the programming in the PCM, it will have a profound effect on the engine's starting and running characteristics. Another possibility is a plugged exhaust system. could the catalytic converter have been melted at some point?
Tests I would make are: Fuel pressure first. Scan for codes next. Fix any obvious problems next. Check for plugged exhaust. Just loosen the pipe to manifold bolts. See if it makes a difference.
One final word of caution: "farmer fixes" do NOT work on sensitive electronically controlled engines. Period.
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