JK Surging Help...

[Shawn]

I have googled and googled and can't find the answer to my problem. I have a 2007 JK with the 3.8 that has a,,, surge / missing/ hesitation kind of problem between 2000 & 3000 RPM's. I have replaced the plugs, wires, PCV, sea foamed the intake and fuel, added K&N and have a superchips flashpac. Jeep has good power when accelerating, but under no to light acceleration the symptoms come up. I have no engine light on and no codes in the computer. The jeep ideas fine. It is really annoying.

Puzzled...

 

[Greg]

Are you loosing any coolant? Could be a bad head gasket and coolant is effecting the ignition.

 

[Shawn]

Nope,

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There really is no loss of power, so to speak

 

[Hickey]

No codes makes that a hard one to find. Maybe a loose harness plug? I would think that would throw a code.

 

[bryson]

What kind of music are you listening to when the surging occurs?

 

[Shawn]

What kind of music are you listening to when the surging occurs?

Pfft, a JK with a sound system...? I feel lucky to have FM radio

 

[Shawn]

No codes makes that a hard one to find. Maybe a loose harness plug? I would think that would throw a code.

You know what it feels like, this may sound weird, but I wonder if the DBW throttle peddle assembly is not working correctly.

 

[Kiel]

Sometimes mass air flow sendors can cause the symtoms you describe

 

[Shawn]

Sometimes mass air flow sendors can cause the symtoms you describe

I was going to look at that, I'll see if there is a way to test one.

 

[ChestonScout]

Im zero help but in my limited time being a JK owner


I can guarantee its a sensor

 

[Shawn]

Im zero help but in my limited time being a JK owner


I can guarantee its a sensor

That I'm sure of, problem is..... there are too many

 

[Shawn]

***UPDATE****
I read where the throttle body needs to be cleaned on a regular basis on these jeeps. After reading some posts I though why not, under $4.00 for the cleaner and 20 minutes. Yep, she runs really good now. Now I'm

 

[mbryson]

Good to know

 

[Greg]

Way cheaper and easier than head gaskets!