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Discussion Starter · #1 ·
Maybe can help somebody-My 2001 Wrangler TJ ,4.0 which I am going to sell showed a code for rear downstream oxy sensor, so I replaced it-next it showed a major & minor evap leak-found the minor a little hose I had to get from dealer $8.95 UGH-major leak ended up being small hose that ran from gas tank up to canister , cleared code then a code for rear downstream oxy sensor fixed and cleared but I kept also getting 306 code so I replaced the coil pack and put in new plugs gapped & torqued cleared code but came back on after about 30 miles, also I sprayed starting fluid on hoses and injectors in case a o ring or hose was losing vacum had no increase in RPM,s,, instead of pouring gas on it and burning it I poured a bottle of REDLINE injector cleaner (I hate snake oils) so far, little over 100 miles and no engine light, Happy camper,:bop: Now I can put for sale sign on old girl
 

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