expedition problems

[STANGM89]

i know this is a mustang forum but thought u guys could help its running like crap and hunching alot like when i take off and up a hill its a 2002 expedition witha 4.6 and it finally had a service engine soon light come on today could it be my oxygen senors?

 

[venom97]

check the code first but i know they have problems with number 4 cyl misfire because of the coolant line going into the heater core leaks onto the coil on plug. most of the time its the factory clamps that cause this,replace them with some from the local parts store. hope this helps

 

[STANGM89]

check the code first but i know they have problems with number 4 cyl misfire because of the coolant line going into the heater core leaks onto the coil on plug. most of the time its the factory clamps that cause this,replace them with some from the local parts store. hope this helps

well its still under warrenty im gonna let them get it this time but i was curious