bfsjr
Member
- Joined
- October 17, 2004
- Messages
- 18
- Reaction score
- 2
- City, State
- midlothian, virginia
- Year, Model & Trim Level
- 1993 explorer xlt
I would greatly appreciate any help from you people in this forum. My 1993 Explorer XLT has been running great until the cooler weather arrived and now in the morning after a cold night, when I start it up, the CEL comes on and it idles very roughly. After it warm up, the CEL goes out and it seems to run fairly well. Even after it's warm, it sometimes hesitates at 60 to 70MPH and the engine will even quit but I can easily restart it at that speed. I forgot to mention that early in the morning when the weather is cool or cold, it really smells of raw gas and blows out white smoke until it gets to operating temperature. I pulled the codes with my scanner and the KOEO code is both 157 and 998 and the same for KOER with both these codes showing. I just put a brand new MAF in this vehicle and cleaned the IAC. I have 183,000 miles on the vehicle but it has the original O2 sensors. Could these sensors be causing this situation.
Any help will be greatly appreciated.
BFSJR
Any help will be greatly appreciated.
BFSJR