NoGo95GT

Yeah, I would pull codes. Because right now we're just giving guesses and that helps no one. My cap does have some slop to it, but it has not caused any problems for me.

mustangsneverdie

there is a ground wire running from the bat. to the timing cover and check to make sure none of the ceramic is cracked on the spark plugs and also make sure that the injector wires are pushed in all of the way

FivePointOhh

engine ground from timing cover to chassy, cylinder head to firewall. replace them both with larger, finer stranded wire. i would also ground your alternator too.

i upgraded the following, pretty much a "bulletproof" grounding system. my charging system has been flawless ever since these upgrades and i highly suggest them.

4awg: computer to chassy, alt to chassy, cylinder head to firewall.

0/1awg: engine to chassy, batter to ground.

ryan_89_mustang

Alright here are the codes:
KOEO
67:Park Neutral Position Switch Circuit Open; A/C On -Manual (O), Manual Lever Position Sensor Out Of Range/A/C On (M,O), Clutch Switch Circuit Failure (M)
82:Secondary Air Bypass Circuit Failure
KOER
42: System Indicates Rich -passenger side(R), No o2 Sensor Switching Detected. always rich -passenger side
33: EGR Valve Opening Not Detected

Cylinder Balance Test
1st: 2
2nd: 8
3rd: 9

ryan_89_mustang

b ump

ryan_89_mustang

Does anyone know how I can check the EGR valve? Also I find the cylinder balance test results weird since it switched cylinders and it passed the 3rd time around.