I have 2007 jk 3.8. I have been fighting a pulse when I chop the throttle from cruising to come to a stop. It will do it around the 800-1200 rpms, and it will bounce about 200-250 rpms. If I can hold the throttle in that area it will continue but if it comes out of that range it will stop. Jeep runs fine cruising and at idle. I had a etc relearn done on it and it made no difference. I do not want to just replace the throttle body to see if it corrects it, dont want to just start throwing money at it. I would like to try a known good throttle body if anybody would have one and is willing to trust me with it, I would be willing to pay shipping here and back. Or does any body have any other ideas or things I could try? I do have a sprintex super charger on it and is the only mod done to it. Tuner can not find or see anything in the tune that could be causing the pulse. So any help would be appreciated. Here is a data view of what I am having.

 

Back to top. Anybody got any ideas or suggestions.

 

I have a good idea what is wrong, but with that attitude (same shown on other forums), I will take my help elsewhere.

 

looks like ppl are getting tired of rudeness. I don't blame them. but lets all try and be friendly here. please remember that the forum IS the sum of its participants.