1998Explodasport
Well-Known Member
- Joined
- July 7, 2009
- Messages
- 383
- Reaction score
- 0
- City, State
- Brockton, Ma
- Year, Model & Trim Level
- 2001 Explorer Sport
About 20k ago I replaced my motor with a motor from a 2008 Mustang that only had 11k on it. Since the motor swap and 20k later I have had a rough idle but other than that the truck runs great. I tried swapping and cleaning MAF sensors, swapping coil packs, fuel and air filter. There is no CEL and no pending codes. The wires are also a few months old but I may try another set. I pulled a few plugs today and they looked really good but I suppose they should with only 30k on them.
Anyone have any suggestions on what is causeing the rough idle? Intake gaskets are also new and fuel trims are right where they are supposed to be. I believe before I swapped motors I replaced all 02 sensors as well. I may try another PCM since I have an extra one at my shop but I think I am wasting my time with that.
Anyone have any suggestions on what is causeing the rough idle? Intake gaskets are also new and fuel trims are right where they are supposed to be. I believe before I swapped motors I replaced all 02 sensors as well. I may try another PCM since I have an extra one at my shop but I think I am wasting my time with that.