Hi, I've done my homework, and searched through the archives for understanding the data logged...I got 3 matches, and one was over my head.

Basically, I'm trying to cure a stalling/hesitation problem. Almost every morning when I start the car, it hesitates as I give it gas, and smoothes out after a few minutes. Sometimes, it stalls, but that only happens twice a month.

I've recently had a mechanic clean the EGR passages, IAC valve, throttle body, and tune the TPS; no luck. I've also had the basic tuneup done, from the suggestions on this board, new plugs, wires, o2 sensor, cap & rotor, coil, pcv valve. I've tried seafoam in pcv valve and gas tank.

Also from the board, my next step is to determine if there's a vacumn leak. As I'm not mechanically inclined, this would involve a visit to the mechanic again. Instead, I was curious to see if datalogging can determine if this leak condition exist.

I'm using WinALDL, and I was planning to capture this data the next time this hesitation occurs. I'd appreciate anyone that would lend their insight. The data is posted in the link below.

http://home.rochester.rr.com/rcheung...170631_LOG.txt



Thanks, Rick