replaced manifold, installed C&L performance manifold and 62mm L&M throttle body and ford racing cold air kit. used bama custom tuning.troubleshot,found no vacuum leaks.no manifold leaks.NO IAC valve on 4.6 liter, on cold starts high idle than after about 3-min's begins to lope between 700- 1500 rpm's. All this started after tuning and mod. it will stop when air conditioner is turned on. or put in drive, (automatic-transmission.) haven't replaced any sensors. Could this be a bad TPS, Thottle postion sensor? or should I replace the MAF TO A AFTER MARKET SENSOR? i think I'll get my multimeter and do some testing.any other advise. Also could the MAF be maxing out?
Oct 18, 2011 at 12:03 AM
