Dodge misfires...help!!!!!
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Joined: Apr 2010
Posts: 87,403
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From: Clayton MI
Unplug the O2 sensor, and drive the truck. It will set a code, but, see if that changes anything. If you suspect the cat is starting to clog, remove the pre-cat O2 sensor from the exhaust, and take it for a drive. (it will be loud, and set a code.) See how THAT feels.
What's fuel pressure look like?
Try swapping 5 and 7 injectors, see if the miss moves with the injector.
What's fuel pressure look like?
Try swapping 5 and 7 injectors, see if the miss moves with the injector.
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Joined: Jan 2012
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***First off thanks a lot for all your guys help. Especially Zman and Kejobe, really appreciate you guys sharing your knowledge, you other guys too!!***
I rerouted the wires, tapped around on the Cat with a hammer for a bit to see if I could free up anything, and took out the IAC and cleaned it up. The IAC was very dirty. Long story short, my CEL turned off and has not come back on. The first start was very clean and free of misfires, ran like a champ. After I shut it off for the night and went back out in the morning to go for a drive and check it out, it severely lacked power and didn't want to go anywhere, but still no CEL or misfires. The RPM's take off but the truck accelerates very slow until I get up to about 20mph, which takes about 30-60 sec, then it seems to go back to normal, but repeats every time I stop and go again. Its slow enough to get honked at when Im at a stop sign or light. It really feels like its a badly stripped transmission but goes away when i get going. This leads me to believe its not that but rather something gas related or God forbid the torque converter but how fast do those fail, just the other day it was running fine, upon acceleration anyway. Not to mention the gears in the tranny are fine. Any help would be awesome. I think this is my last problem!!!!!!!!!!!!!! FINALLY
HEYYOU- Thanks I appreciate it. Im going to try those things you said in your last post. Just haven't been able too yet. Just had kid #4 today so you can see between this and that its not easy to get things done. Thanks alot again guys this forum has been a real life saver as far as stress and money goes. 4 little boys takes its toll enough on a guy hahaha
I rerouted the wires, tapped around on the Cat with a hammer for a bit to see if I could free up anything, and took out the IAC and cleaned it up. The IAC was very dirty. Long story short, my CEL turned off and has not come back on. The first start was very clean and free of misfires, ran like a champ. After I shut it off for the night and went back out in the morning to go for a drive and check it out, it severely lacked power and didn't want to go anywhere, but still no CEL or misfires. The RPM's take off but the truck accelerates very slow until I get up to about 20mph, which takes about 30-60 sec, then it seems to go back to normal, but repeats every time I stop and go again. Its slow enough to get honked at when Im at a stop sign or light. It really feels like its a badly stripped transmission but goes away when i get going. This leads me to believe its not that but rather something gas related or God forbid the torque converter but how fast do those fail, just the other day it was running fine, upon acceleration anyway. Not to mention the gears in the tranny are fine. Any help would be awesome. I think this is my last problem!!!!!!!!!!!!!! FINALLY
HEYYOU- Thanks I appreciate it. Im going to try those things you said in your last post. Just haven't been able too yet. Just had kid #4 today so you can see between this and that its not easy to get things done. Thanks alot again guys this forum has been a real life saver as far as stress and money goes. 4 little boys takes its toll enough on a guy hahaha
