I've been having problems when the AC or heater controls are on. When and during acceleration the jeep cuts out and misses a lot or going down the road the engine, 2.5, cuts out and misses. I've looked at vacum lines and anything else that I can with the schematics. I'm wondering if it could be a fuel problem? I overhauled the engine a year ago but the issue is still there. When the heater only is on the AC compressor kicks turns off and on. This could be a relay problem? 2002 jeep wrangler, 2.5 engine, 67,000 miles. Any help would be appreciated.