check enginge light July 16, 2006, 05:54:21 PM i don't rember off hand what codes show up, but it all has to do with the VAM meter, i got a brand new oneinstalled it...and am having the same problem, car runs py, way rich, 1500 RPM idle, and sparatic at that.i did the 88 t-coupe swap into my 89 mustang, runs awsome (excpet the raw fuel smell) with out the vam meter, and the lack of passing emiisionsany ideas ? Quote Selected