Car idles rough when hot

Asked by Oct 31, 2016 at 02:36 PM about the 1998 Buick LeSabre Limited Sedan FWD

Question type: Maintenance & Repair

I have a 98 buick lesabre limited 3.8 engine. The
codes are 1133 and p1676. It starts fine and runs
fine until it gets hot. Then it idles rough and cuts
off at stops or if stopping suddenly. Any ideas?

2 Answers

113,665

code number P1133- IT CULD BE THE FOLLOWING Faulty Heated Oxygen Sensor (HO2S) Bank 1 Sensor, Vacuum leak - Faulty Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 harness is open or shorted ,Faulty Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 circuit poor electrical connection.

1 of 1 people found this helpful.
113,665

http://buickforums.com/forums/threads/25505-P1676-code-scanned-from-OBD

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