Problem With New Heads

[bh400ex]

I just purchased a new set of Texas speed 5.3 heads and intalled them. The heads are stock GM castings that was milled to 60cc combustion and cnced, 2.02-1.57 Valves. Started truck today and it would hardly run, threw a po101, po106, and po107. Can anyone help!

[mtm700]

Check the MAP sensor wiring. Check the terminals inside the MAP sensor and the MAP sensor connector. Make sure the harness isn't routed too close to the plug wires or battery + wires. All those codes are MAP sensor codes. If you need diagnostic flow charts let me know.

[bh400ex]

Thanks but i allready checked all the a dozen times today. Put in new plugs, and after 5 minuites run time they are black and gas fouled. If u rev the engine at about 2500-3000 rpms it smooths out just a little.

[Eric Loll]

I just purchased a new set of Texas speed 5.3 heads and intalled them. The heads are stock GM castings that was milled to 60cc combustion and cnced, 2.02-1.57 Valves. Started truck today and it would hardly run, threw a po101, po106, and po107. Can anyone help!

 

 

did you change the the cam? I f not heads arnt helping you its messing with you computer it my need tuned.