I have a 2000 4.7 Durango
It is idling/running really rough with the tendency to just quit running at all.
PO202 is the only code I'm getting. I've replaced the TPS, #2 injector and nothing. I'm also positive the plug is getting spark. Any ideas?
Thanks guys.

 

I had the same problem a while back and all I did was replaced the spark plugs, wires, cap and rotor, then put injector cleaner in my tank and the problem went away. Just make sure you use oem parts.

 

He doesn't have wires, cap and rotor on that engine. When was the last time you did a spark plug change and always use the correct plugs for it. Champion Coppers.

 

no cap rotor OR wires on a 4.7l engine, they are coil on plug, so as long as the plug is good an you are getting spark i would look at maybe running a tank of fuel injector cleaner through it see it there is crap in the injector

 

Today when i removed the #2 plug it was soaked with raw gasoline. I'll probably go ahead and replace all plugs, but I have a feeling this may not do the trick.

 

if that doesnt work try swaping the coil packs around btwn the bad cylinder and a good one, if the problem follows the coil pack replace it

 

Use Champion Copper plugs

 

So using a different brand would actually be bad?

 

YES!!!


Just go get the cheapo Champion Copper Spark Plugs $2 each and gap at .040


Replace after every 15k or once per year. My favorite is Champion Truck Plugs, same gap, found at NAPA for like $2.75 each.

 

Ok, i will. So the bosch plugs that were in it were just terrible? What makes such a difference? Just for my knowledge, not questioning your authori-ti