Join Date: Apr 2002
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OT - want another opinion on engine diag.
Ok, my fiance has a 86 t-bird with a 3.8L v6 with some sort of electronic carb. Its been cutting out really bad, like a miss. We just got done replacing the plugs and wires and checked the timing. It also has new lifters and rod bearings, as of ~5mo ago. It has a sound like a backfire coming from around the carb and gas coming up from the throttle body. It also has a ticking on the pass. side of the motor near the firewall.
I pulled the codes and I get...
22) Manifold Absolute Pressure (MAP) or BARO sensor out of range.
92) HEGO (HO2S) sensor voltage high/system rich
31) EVP or PFE circuit below minimum voltage.
Now, it has had the 92 and 31 for quite a while, but the 22 is a new one. Anyway, my dad listened to it and thinks its a stuck valve or a bad lifter. What do you guys think is wrong with it? And what would cause those codes to come up? Thanks in advance!