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Brandon
Dodge Dakota
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1/10/2011
17:51:35
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 Subject: Running Rough
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Message:
Hey guys I have come here for some great Dakota expertise!! I been having this ongoing problem with my 99 3.9 Dakota. There is times it runs absolutely perfect, smooth, absolutely great mpg's.. That happens about twice a month for a day at a time. The rest of the time it runs extremely rough. Once i get above 2000 RPM's my whole truck cab vibrates like crazy and I loose a lot of power! i go from go from about 22mpg's to about 12. I have tried everything. New plugs, wires, cap and rotor. I got a new oxygen sensor pre cat about 7 months ago and I have a oxygen sensor simulater for the post cat because I had it straight piped for awhile but I put a new cat in about 3 months ago. Ive went back and forth with the oxy sensor and simulater but it made no difference. I pulled out the plugs to see what they looked like and they are burning white which means its running lean. If any of you guys got any ideas please let me know this is driving me crazy. Maybe fuel pressure issue or map sensor? I have no more ideas.
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Brandon
Dodge Dakota
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1/10/2011
17:54:21
| RE: Running Rough
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Message:
Its a 5 speed with 2WD.. Just replaced the clutch 5 months ago if that helps at all!
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Brandon
Dodge Dakota
JOIN HERE
1/10/2011
17:56:30
| RE: Running Rough
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Message:
It also hasn't thrown any codes!
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YourBuddy
Dodge Dakota
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1/10/2011
20:22:10
| RE: Running Rough
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Message:
Put in fuel injector cleaner
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Brandon
Dodge Dakota
JOIN HERE
1/10/2011
20:24:35
| RE: Running Rough
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Message:
Yeah I did that. Put some seafoam in there. I also went through and checked all of them by unplugging them 1 by 1 to see if they were the issue but they all seem to be working? I am stumped
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Brandon
Dodge Dakota
JOIN HERE
1/10/2011
21:37:44
| RE: Running Rough
IP: Logged
Message:
There is also a spark knock. I dont know if that would contribute to my problem
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