Misfire
#1
Misfire
Truck has been running real rough for the past few weeks and been sucking the gas like you guys wouldn't believe. A 35 gal tank is getting me 400km to a tank. Ouch.. Anyways, so I put a code reader on it and I forget the code but it said Misfire On Cylinder 2. I checked #2 cylinder and the plug was bone dry which is good so I checked cylinder #4 and the plug is soaked. Why my code reader told me its cylinder 2 is beyond me but I've got new plugs and new wires that are 6 months old. I swapped the cylinder 2 and 4 plugs and its not the plug. I've noticed that it happens when I go through a mud hole but then goes away 5 min later, which is understandable because I do offroad the truck. Now its constant for the most part. I get the odd start up where its not misfiring. Where should I start looking?
#2
#4
#5
Well, I can say I had similar symptoms in my 98 360 and it turned out to be a bad temp sensor. With a low /no temp reading to the PCM it was having intermittent rough run after start up, run ragged first 5 miles, clear up and run good. It came down to the low temp reading having the PCM give it some extra fuel (8 mpg's). I also had a crack in the distributor cap. K.
#6
Good advice above from HeyYou, and also don't forget the old TSB about routing the wires...anytime you are fiddling around with them...it really does make a difference!
Here's a link to the 1998 TSB:
http://dodgeram.info/tsb/1998/18-48-98/18-48-98-v8.htm
Here's a link to the 1998 TSB:
http://dodgeram.info/tsb/1998/18-48-98/18-48-98-v8.htm
Last edited by shak; 06-30-2014 at 07:35 PM.