I need advice on Fault Code readouts for NA engine w/auto trans. College daughter's car was having problems and located 100 mi from home. I drove up and did following repairs then left her my '96 850 and drove hers home. Problem: Intermittant hesitation upon acceleration at any speed. Work performed to date: New fuel filter and plugs. Found that temp was fluctuating and replaced thermostat (cured temp problem). Everything done has improved the performance, however problem with hesitation persists. I can not find the fault codes in Haynes manual. A-1 114 A-2 543, 453, 545, 553 A-7 113 A-6 ###.

The odd thing is I get nothing, no light at all from Socket # 6. I cleared all codes this morning and will drive it to work and see what codes reset. My frustration is intermittant hesitation with no common thing preceding the issue. I have not tested fuel pressure but feel if it were fuel pump, injectors, plug wires, rotor/dist cap, timing or fuel regulator that the problem would be continuous. Any advice or direction is appreciated.