5.4 Engine Missing
Ok all, first I would like to say thanks, I've posted very little, but have utilized several discussions in the past to keep my truck rolling. Usually I can find the answers with a simple search. And for the most part I've already decided what direction to take first, but a second/several opinions are always better.
So here is the skinny,
'02 FX4 supercrew, Airaid intake/PowerAid Throttle body spacer, Hypertech programmer, Flomaster super 40 duals, 286,000KMS - If I haven't changed it, its factory.P
Problem: severe shudder in idle, under load, under heavy acceleration, and almost dies idling in gear. Gives me codes of P0307, P0308, P1131, P0316 and P1000. I've had the odd miss in the past while accelerating, but never registered any codes. The odd miss would be cured by letting off the throttle then resuming. The most recent and severe issue happened overnight, and was worse than ever, plus it finally gave me codes - bonus I suppose!
So the first plan is to change all plugs and #7/8 COPs this week end.
My questions are:
1. What the heck is the P1000 code mean?
2. The P1131 is Lean on Bank one upstream - I was chalking this one up to spark issue - but if it isn't firing, and there is fuel, isn't "lean" opposite of what the readings should be? Ex-unburned fuel makes exhaust rich, no? this leads to the third:
3. Any trouble with Injectors ever happen "overnight"?
4. Any special tools I should have on hand that make life easier changing plugs/COPS before I strand myself on the farm?
Any help would be appreciated.