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  • 1996 - 2004 SN95 Mustang -General/Talk-
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Running both lean and rich with O2 heat codes

  • Thread starter Thread starter Danceswithfire5
  • Start date Start date Sunday at 9:25 AM
D

Danceswithfire5

New Member
Aug 30, 2026
1
0
1
Florida
Sunday at 9:25 AM
#1
  • Sunday at 9:25 AM
  • #1
Just bought my little ‘97 and she’s craving car candy. Previous owners replaced the MAF, TPS, and idle control sensors with Amazon parts (so only so much faith in those). They also replaced with oreillys parts the fuel injectors, spark plugs and wires, control arms, rack and pinion, shocks, sway bar, ball joints, hubs, fuel pump, front brakes (but not the pads), and distributor. I believe they also replaced or repaired some portion of the intake manifold and gaskets beneath it based off photos I was shown prior to purchase. It also has a PCV valve and grommet that I purchased from advanced that they installed for me prior to purchase. She drove great for about two days and then stalled at a red light. Little shudder and then just cut out with the battery light popping on. She started right back up after and then momentarily acted like she wasn’t getting gas about 5 min later.
Currently has the following codes:
P0155
P0135
P1121
P0175
P0174
Best troubleshooting methods? I bought a can of carb cleaner to look for a leak but I read that can cause fires and I’d rather not do that. Mostly work on my own cars but also open to coughing up mechanic money.
 
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