I have been having some issues with a miss/stumble. There have been no codes from this issue. The Miss/Stumble happenes below 2500rpm and is noticable when there is load on the engine. The datalog shows a short trip around the neighborhood with 2 very short highway runs. I included both the .csv file (excel) and the .atl file (autotap). Any help would me greatly appreciated.

http://www.mediafire.com/?0k02jyh4hnn (Autotap)

http://www.mediafire.com/?9jytd0jbjtd (Excel)

 

have you tried having the car run and spraying carb cleaner and seeing if rpms change may be a vacuum leak

 

just thought of another thing buddy needs to replace E.S.C for same issue a tech told him sometimes it won't trigger the check engine light

 

I will try the carb cleaner tomorrow. Good idea.

ok you stumped me what is E.S.C?

 

Ttt

 

Electronic Spark Control there are 8 differnt kinds maid for these year cars need to find were its located could be in a # of places then bring it to a part store and based off the manufacturer # they can get you the correct one

 

if carb cleaner didnt do anything spray water on plug wires and see if you get a miss a good mist should do the trick