02 Ranger 2.3 weird problems - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

tuna1664 · 01-17-2010, 14:14

2002 Ranger 2.3, standard trans, runs really rough when cold. Sets codes po352, and cylinder 2 and 3 misfire codes. Takes 20 min to warm up. When fully warm temp sensor is reading 240 and holds steady. When fully warm runs fine. When computer is in open loop runs rough then switches to closed loop it runs fine. I really need help with this one.

**Bert** · 01-17-2010, 15:24

Have you fixed the missfire? For some running problems, cleaning the MAF with the MAF cleaner helps.

tuna1664 · 01-17-2010, 15:28

Quote:

Originally Posted by rtg143

Have you fixed the missfire? For some running problems, cleaning the MAF with the MAF cleaner helps.

No but why would the MAF make it miss on only 2 and 3? im just confused. im glad i finally got a response though. and it runs fine when warmed up. and the coolant temp way to high.

**Bert** · 01-17-2010, 17:33

It shouldn't have anything to do with the miss. The code P0352 is the coil #2 circuit. The coil may need replacing or the wiring has a problem. It could also give the misfire code.