- Joined
- Jun 14, 2008
- Messages
- 21
- Points
- 3,101
- Age
- 54
- City
- Texas
- Vehicle Year
- 1993
- Transmission
- Manual
First off, I've tried to get help on "that other forum" with little to no help....
1993 Ranger 4.0L 5 speed with 104K miles
The story goes like this: Intermittently the truck will loose power and the CEL will come on. If you cycle the key it picks up power again. The first trip to the computer it came up code 137, changed the O2 sensors, still the same. Had a code of 157 on next read. cleaned, got the same code, then replaced the MAF. SAME RESULTS ON THE ROAD. Replaced the coil pack, cleaned the ICM and TPS, ran the Chilton check on every sensor on the truck. Ran codes today and got a 137, 157 (MAF low voltage), and 538 (insufficient RPM cahange during KOER Daynamic Responce test) In the middle of all this I did have the muffle shop check the Cats and they seem to be fine. I'm at a loss and need my truck up to snuff!
What gets me is that it doesn't do it all the time or in a recognizable cycle ( up hill, down hill, load, unloaded, etc...) It just does it for different lengths of time also....some times cycling the key doesn't work some times it does.
Haven't found any vac leaks or loose wires.
also my code readers book says 137 is rich and my chilton says lean???????
From what I've gathered it is rich, and by the exhaust smell it's rich.....
Please throw something out there for me to bite on!
1993 Ranger 4.0L 5 speed with 104K miles
The story goes like this: Intermittently the truck will loose power and the CEL will come on. If you cycle the key it picks up power again. The first trip to the computer it came up code 137, changed the O2 sensors, still the same. Had a code of 157 on next read. cleaned, got the same code, then replaced the MAF. SAME RESULTS ON THE ROAD. Replaced the coil pack, cleaned the ICM and TPS, ran the Chilton check on every sensor on the truck. Ran codes today and got a 137, 157 (MAF low voltage), and 538 (insufficient RPM cahange during KOER Daynamic Responce test) In the middle of all this I did have the muffle shop check the Cats and they seem to be fine. I'm at a loss and need my truck up to snuff!
What gets me is that it doesn't do it all the time or in a recognizable cycle ( up hill, down hill, load, unloaded, etc...) It just does it for different lengths of time also....some times cycling the key doesn't work some times it does.
Haven't found any vac leaks or loose wires.
also my code readers book says 137 is rich and my chilton says lean???????
From what I've gathered it is rich, and by the exhaust smell it's rich.....
Please throw something out there for me to bite on!
