Re: Loss in MGP after new plugs
i noticed the same thing when i changed my plugs. All i did was unplug the negative battery terminal for about 15 minutes because my check engine light came on also and then drove on the freeway for about 2 hours. Once i got back in town the mileage was back to normal . . . I dont know if it was the drive or the battery thing but it worked for me.
Brian: 2008 Jeep Green Metallic Grand Cherokee : 3.7L
Mods : K&N Intake, FRP Throttle Body/ ported intake manifold, Hypertech Tuner, SRT Rear Sway Bar, WK Bilstein Shocks/Struts, SRT Rear Bumper, SRT exhaust, Custom SRT Design Badge, MyGiG RER, Green LED Interior, Kicker Amp & 10' Sub, LED dome lights, BA speakers.