Eastcoastmod
Active Member
- Joined
- October 20, 2010
- Messages
- 86
- Reaction score
- 0
- City, State
- Halifax,
- Year, Model & Trim Level
- 2003 Explorer Limited 4.6
HI all
I'm getting the following codes po304 and 316
2003 ex 4.6 limited
symptoms
low idle misfire, worse when it warms up
idling around 500-600
stalls when coming to a stop
give it gas and all is good pulls hard
so far
new plugs
new coils
new iac valve....factory ford part
cleaned MAF sensor
checked all vacuum lines
seafoamed, standard brake booster vacuum line suck in, no change
I've read that it could be the crank position sensor...wouldn't that give me rough running through all rmp ranges?
Is the po304 a misfire in cyl 4?
Any help is appreciated. It's hot out, looking for a quick solution.
Colin
I'm getting the following codes po304 and 316
2003 ex 4.6 limited
symptoms
low idle misfire, worse when it warms up
idling around 500-600
stalls when coming to a stop
give it gas and all is good pulls hard
so far
new plugs
new coils
new iac valve....factory ford part
cleaned MAF sensor
checked all vacuum lines
seafoamed, standard brake booster vacuum line suck in, no change
I've read that it could be the crank position sensor...wouldn't that give me rough running through all rmp ranges?
Is the po304 a misfire in cyl 4?
Any help is appreciated. It's hot out, looking for a quick solution.
Colin
