Posted by Sprint 6 on January 02, 2017 at 20:00:01 from (50.102.85.212):
In Reply to: OT-diagnostic codes posted by tomturkey on January 02, 2017 at 16:39:50:
The P0171 and P0174 are not O2 sensor codes, they are fuel trim lean codes. I would start there and/or with the MAF code. P0101 is highly uncommon with that engine, the MAF on those almost never fails. I think you MAF code is causing the lean codes, in turn causing your misfire code P0300. I would also want to see a scope pattern on the crank sensor. Start by checking fuses, the MAF and crank sensor require 12V feed. I have seen a mild short to ground near the trans dipstick bring the 12v feed low enough to affect the MAF signal, yet not pop the fuse. You could have low fuel pressure, like Hobo said too, worth checking. At this point, your cap, rotor, wires, and plugs is unlikely to change anything. You really need a scan tool that shows data for the sensors in question, otherwise you are flying blind and waving money.
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