Code 121 TPS-MAFS circuit

mcate

Registered User
A couple of weeks ago I installed a Magnum Powers 85mm throttle body & intake plenum on my 95 SC auto. My factory TPS wouldn’t fit flush into the TB because it was too big. I purchased one from a local parts store, but it wouldn’t fit either. SCP recommended one & I ordered it, part # E9EF 9B989 BA. This one is smaller around, & fits nicely into the TB. Had no problems with it for the last 2 weeks, but now I’m getting a code 121, TPS-MAFS circuit problem. I’m running a 76mm MAFS with the proper sampling tube. Tried a different MAFS yesterday, but with my same Ford electronics. Still got the same code. Anyone ever seen this?
 
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