p0101 p0107 p0430 p0420 1996 camaro 6 speed lt1

just put new motor in my 96 camaro LT1 and i keep getting these codes no matter what i do p0101 p0107 p0430 p0420. i have replaced the mass air flow sensor, idle air control, throttle positioning sensor, plugs. Cant think of what else could cause this problem. any suggestions would be greatly appreciated

Engines usually fail for a reason. So find out what killed your previous engine. P0420 and P0430 suggest catalytic converter failure. Misfire, rich misfire, or lean misfire cankill a cat. So can excessing burning oil. Fix any previous problems first so you won't ruin your new cat.

P0101,a nd P0107 are a little more complicated. Has your wiring been pinched. It sounds like the PCM can't calculate air density because it's not getting signals from MAF and MAP. Valve train issues can cause this too. INstall a vacuum gauge and see if the needle fluctuates rapidly. THis indicates valve problems and can cause the codes

new used motor? new reman motor, shortblock, longblock???????

remaned motor .. longblock... the old motor was giving some problems also. but nothing like this.. i will check the MAP sensor and see what i find out. but right now my motor may have only like 1000 miles on it.. any ideas?

its not like a big loss in power just kinda sluggish.. you can tell power is missing though. i am also checking the wires to the MAF becuase i think they are close to the coil

does any one know what the proper PSI for the injectors are supposed to be for this model.. thinking of buying a new set.. performance (of course)

check the conveters for a restriction!

sorry on the late mentioning on that part of checking the converters for a restristion but i did do that .. midas did some pressure testing on it and the was no retriction regards

where and how were they checked? did they remove the 02's and take a pressure reading or did they do it through the intake? It's quite likely the conveters may be damaged from the engine failure! burning oil or coolant or poor quality fuel will degrade conveters rather quickly. As well some aftermarket and "high performance" conveters will generate those codes! Exhaust leaks ahead of the 02's can give some pretty strange 02 readings as well! I'd hold off on purchasing new fuel injectors right now if you're trying to clear the codes although If you just want to go fast then whatever! You of coursed checked the timing and fuel pressure and flow as well right!

yes all timeing and everything was checked .. the old motor was doing the exact same thing really. i just put a new one in there.. i will hold off on injectors because i want to get the motor right first. and they checked the cats by pulling o2 sensor outand putting a gauge in the hole. they would hit the gas and the pressure would stay on zero (0). but thats not to say that it isnt bad causing this problem .. i am going to replace the MAP sensor first then the cats if that doesnt solve the problem also jst recently got a P0300 error. so kinda stumped now

can I buy the old engine?

the p0101 and p0107 codes were comeing form the MAF (mass air flow) sensor and my guess was causeing the p0300 since i had already bought a MAF and replaced the new one was defective.. replaced with new one and problems went away. only problem left is P0420. so guessing that i will have to replace the catalyct converter even though there is no restrictions... any other ideas?

The codes aren't referring to a restriction, but a failed catalyst. It has nothing to do with whether or not there is a restriction. So, yes, the cat.s need replaced most likely, if you've done everything you can to minimize the risk to your new cats.

know where i can get a catalyct converter... because the one i have is like a big folgers can ... and very expensive

I would purchase a high quality aftermarket converter(like Walker) or a OE converter(which will be quite pricey). Try to avoid the generic ones if you can afford it.