I've got a '94 Teg with 170+ g on it. Today it started running like it's misfiring. Poor shaky acceleration, jumpy idle. It also seems to be running colder than normal. Running down LA 101 at 85 the needle barely passed the first hash mark. Getting spark to all cylinders. Reset ECU. Exhaust smells different, maybe too rich. Runs steady during warm up idle. Any ideas? Appreciate the help!