perlitaj
New Member
94 MTX, engine dies at stoplights, surging idle othertimes.
Cleared codes and KOEO got 111, stored were 173, 177, 528, 542. CEL came on in the past (for short periods) but hasn't in a while while driving. Seems to run fine with secondaries opening and all, just poor or no idle. From research on the forum I checked for vacuum leaks and found none and the A/C was off, colder here in Illinois now. Also new fuel pump and plugs, wires, overall good maintenance on the beast. Sounds to me like possibly the O2 sensors but will they cause the surging idle or are they showing another problems effect?
Cleared codes and KOEO got 111, stored were 173, 177, 528, 542. CEL came on in the past (for short periods) but hasn't in a while while driving. Seems to run fine with secondaries opening and all, just poor or no idle. From research on the forum I checked for vacuum leaks and found none and the A/C was off, colder here in Illinois now. Also new fuel pump and plugs, wires, overall good maintenance on the beast. Sounds to me like possibly the O2 sensors but will they cause the surging idle or are they showing another problems effect?
