We've been fighting this problem all Summer. Car usually runs fine, but will randomly decide to run like crap. Monitoring the fuel trim values show that both short and long term fuel trims peg at -25% when the problem is occurring. Eliminated a possible vacuum leak as the problem and decided that the throttle position sensor was not bad based on live data. We are installing a new/rebuilt MAF sensor I got off Ebay to see if that fixes the problem. During installation, I realized that the new MAF sensor doesn't come with a new O-ring seal, so had to install it without a seal. The car seemed to drive fine without it, but Nissan still carries the seal for $5, so will replace at first chance. I will post more videos in the future if we determine either way if the problem is fixed or not.

свернуть