My engine has no power why?

I pulled the 2 fuses marked ECM under the hood for about 10 min. I was told this would help clear the driving habits of the previous owner. It made it worse I think.

Fuel pump, filter new lines
intake gasket
egr
all new.
Someone said MAF sensor too tired of throwin money at it.

Try the rotor (the thing that spins) with the distributor That's what was wrong with mine. Runs smooth as day now.

Did the test. It doesnt suck in, just kind of goes back and forth (rag) slightly. When reved up at a higher rpm and let off, it did suck in though. Did the test on a new truck and it did the same thing. Is there any other way to test this? Is there a way to fix a sticking exhaust valve other than tearing apart the engine?

Engine Performance problem
1999 Chevy Tahoe V8 Four Wheel Drive Automatic 112k miles

Issue started on long slight inclines as a shudder during climb w/ RPM's 1000-1500. Keeping the RPM's above 2k, seems to alleviate the shudder entirely. It got slightly worse over two weeks or so, ultimately resulting in a pretty significant loss of power when stomping the throttle. I pulled a PO306 (cyl6 misfire) from the service light and replaced all plugs and wires. That gave me almost all of the power back for a few days. Then during that same 1/2 mile slow climb, the shudder returned and engine light with it. A new fuel filter at this point. A few days later when trying to accelerate up a hwy on ramp, all power fell away. I pulled over and GENTLY worked the throttle to get me back home. Even conservative green light acceleration would result in nearly complete loss of power. Brought it to a shop, they tested the pressure at 45-55 psi and said the fuel pump was on it's way out. Those numbers seemed close to spec, but I replaced the pump anyhow (myself). Once new pump was in (yesterday), I took it out to test 0-60 on a flat, hard steep climbing, slow grinding climb, everything was totally good to go. Super responsive, etc. Seemed like the new pump fixed it. Then this morning. On THAT SAME slow climb. The shudder returned, engine light is back on again. I can feel the truck bogging down on nearly any incline again, and have to keep the rpm's up to avoid that shudder, loss of power. So. Bad compression. Valve cover, fuel pressure regulator, something in that neighborhood? Any suggestions are very appreciated!

When my 99 tahoe gave me the same problem I had to not only change the plugs and wire but also the distributer and rotor cap. Hope this helps.

I have lack of power and misfire when I first take off. It is worse when car has sat for awhile. It has a new fuel pump. I've also had the fuel pressure checked and an injector balance done and it all checked ok. No fuel pressure drop or restrictions. It has a new fuel filter and spark plugs. It seems to drive a little better after 5-10 minutes but still feels like it has poor power. When It's under a load I feel it act up the worse. It has history misfires on 1 4 and 6 cylinders. Can a bad cap and rotor cause this?

My truck has no power wont rev over 3000 rpm and has a p1300 code for random missfire need to know possible causes and parts to check

Power loss in truck

What to do if a 1998 Chevy Tahoe want go over 5 miles a hour after replacing the fuel regulator?

Well it starts up when cold and runs good just idle, then when I press my pedal it boggs out and want go over 5 miles a hour. So I went to get a test and the codes showed regulator and O2 sensors, so I also did a tune up on it as well and changed the fuel filter. So its still doing the same thing after all of this. Codes are not showing anything else. This thing runs bad when trying to move forward. HELP!

Where would I look to see if it turns red?