waterone1@aol.com
Lieutenant Junior Grade
- Joined
- Oct 10, 2004
- Messages
- 1,235
Re: 01' MCM5.0 EFI runs rough
If the coil was breaking down due to heat, that could be duplicated by heating the coil with a hair blow dryer prior to starting the engine (use all safety precautions, make sure engine room is free of gas vapors first, etc.) Then start engine. If it acts up right away.....it's a coil that is breaking down when hot. If it still takes the engine to warm up before it starts acting up, we have eliminated the coil.
If the coil was breaking down due to heat, that could be duplicated by heating the coil with a hair blow dryer prior to starting the engine (use all safety precautions, make sure engine room is free of gas vapors first, etc.) Then start engine. If it acts up right away.....it's a coil that is breaking down when hot. If it still takes the engine to warm up before it starts acting up, we have eliminated the coil.