Another option would be to have the OP create a new thread that simply states the problem, all the symptoms they experienced and what they did to fix it. maybe a separate folder for these threads would be good and people could add any extra info. Anything off topic could be deleted from those threads.
A little more work perhaps, but it would create a distilled data source without useless info and unresolved queries. And people might be motivated to do it because then they would have their name on the how-to so to speak. [OK the folders already exist, i.e. Duratec How To, we just need to use them]
One thing that drives me nuts is that 3 letter search thing and acronyms. so for example iac, pcv, egr cannot be searched for and it is rare that someone expands these out. If the thread has useful information it would be good to 'tag' them so that searching for "idle air control" would find the thread.