Exhaust Manifold getting Red Hot.

[Peter's 93 Ranger]

I replaced the EGR,MAF, All 4 Fuel Injectors, Checked the ECM. the O2 sensor is Brand new. Exhaust is still getting red hot. Runs great for about a minute but then losses its power shortly after. cannot even climb a small incline in first gear.
Any ideas on what to look for next. Timing is on. no vaccumm leaks either. totally stumped.

 

[Uncle Gump]

First off... welcome to TRS.

Secondly... It sounds to me like you have a plugged exhaust. Google testing for restricted exhaust... typically done with a vacuum gauge... see where it leads you.

 

[19Walt93]

We had an F150 with an intermittent open circuit in the spout circuit that got the right manifold hot enough to melt the fender liner.

 

[89Twincharge]

Definitely clogged cat!!

 

[Peter's 93 Ranger]

First off... welcome to TRS.

Secondly... It sounds to me like you have a plugged exhaust. Google testing for restricted exhaust... typically done with a vacuum gauge... see where it leads you.

will do, Could irridium plugs be the problem? that is what is in it now.

 

[19Walt93]

will do, Could irridium plugs be the problem? that is what is in it now.

Nope, plugs wouldn't do that.

 

[Uncle Gump]

What Walt said...