diagnostic help please...'93 sable 3.8
Hi - Any help is appreciated. I have a
1993 sable 3.8
It runs fine (no noticeable problem) except that the check engine light goes on occassionally. I pulled the codes for KOEO and they are:
Current Code - 335: EGR sensor circuit voltage higher or lower than expected
Memory Codes - 57: neutral pressure switch circuit fault; 332: Insufficient EGR flow
For about a year now, the lamp would go on if I went down hill for a few minutes, but would then go out once I was climbing or on flat ground. I didn't notice any problems besides that, and it was so infrequent, that I ignored it. The light goes on and off daily now.
Do you think this might be a bad EGR valve or...?
(Funny thing is that it just passed smog (CA) no problem!)