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Discussion Starter #1 (Edited)

I just read my DTCs on my 4.3 1998 s10 and I got these readouts..

0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Output
0172 System Too Rich (bank 1)
0175 System Too Rich (bank 2)
0300 Random/Multiple Cylinder Misfire Detected

Does anyone know what may be causing these problems?? Could it be the ignition, O2 sensors..

I would really appreciate some help, since I have to work on my truck myself.
I just put a new catalytic converter on it, maybe these engine problems were the reason the cat went out..
This truck has almost 100,000 miles on it, so I expected it to have problems..

im guessing its the MAP sensor, but what do you guys think??

13,572 Posts
The MAP and the misfire code I have noticed people say they get randomly, I would try erasing those and see if they come back real soon or not. As for the system too rich codes, I suppose that could have something to do with o2 sensors, also could go along with the multiple misfire code if it is something more serious than just a random misfire.
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