I have a 2001 h6 llbean that hesitates when it is hot outside.It is more noticible when the ac is on.It has new sparkplugs.What. would be causing this.
Five year old Battery????? Check the battery amperage output with the engine off. Advance stores have a meter that test amperage, the same they use to check loads, and will check it for free. If its low, get a new battery and start fresh. Oreilly's sells a meter just for checking conductive amperage flow, but its around 250. Same with tool vendors, but it comes in handy on many occasions. At least I use mine many times a day.I just replaced the pcv valve a month ago. The battery was new in 2007 but checks out fine.I wish the engine light would come on so I could figgure this one out