Bad springs/exhaust hitting
codes
172 - Oxygen sensor not switching - system is or was lean
Bad o2 sensor or a loose wire
223 - Dual Plug (DPI), SPOUT or IDM circuit fault
Dose your tach work? get coil packs and ICM tested to make sure they are working right
224 - Failure in ignition coil primary circuit
Check above
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1988 Mustang LX
Ex 2.3 N/A car, was a 2.3 turbo, now getting a complete forged & stroked 408W, shooting for a TT setup
1992 GMC Sonoma 4x4
185,000km's|4.3 auto|current DD getting 24mpg
1991 Mazda MX6 DX
299,000 km's (over 186K miles)| TOTALED!
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