fosgatefan821 Posted October 5, 2014 Report Share Posted October 5, 2014 My mother ha s 6 cylinder Ford Taurus 4 door sedan. When she stops at a MAC machine or anywhere where you sit idle for the engine just accelerates real bad. Then she says she can a hear a ping noise when it accelerates then it decelerates and idles normally. A dealership changed the fuel filter and cleaned the throttle. I have no clue what to do, any ideas? I am in Dallas TX and she is in Pittsburgh PA. No engine codes ever pop up either. Drove for 20 minutes before she stopped at idle and it started. Any help is appreciated. 2007 Ford Ranger (ALL YET TO BE INSTALLED - DUE TO WORK SCHEDULES) K&N Performance Air Intake Massive Audio D2400 Mono Amplifier 2 Custom Built 8" Subwoofers in Ported Enclosure Pioneer AVH-P4400BH In Dash Double Din DVD Player (Video Bypassed) 4 - Pioneer TS-A6886R 6" X 8" 2 - SMD Heavy Duty Single ANL Fuse Blocks 2- Stinger SPP1200 Dry Cell Batteries JL AUDIO Interconnects 2/0 Gauge Big 3 ILL Customz 8 Spot Flat Lug Style Bolt Down Terminals ILL Customz 1/0 to 4 Gauge Power / Ground Reducers Factory Alternator __________________________________________________________________________________________________________________________________ 2002 Cheverlot Monte Carlo SS - (Deceased) 2 - Rockford Fosgate Power 1501BD 1 - Rockford Fosgate Power 851x Rockford Fosgate Power 6 1/2 Components Rockford Fosgate Power 3 way 6x9 2 - JL Audio W7 13.5" Subwoofers (Sealed) Pioneer AVH-P4400BH In - Dash DVD Player Pioneer AVIC - U250 - Add-on GPS Navigation System Audio Control 6XS 4 Way Crossover / Line Driver Ohio Generator 200 Amp Alternator 3 - Stinger SPP1200 Batteries 1 - Optima D34/78 Battery Link to comment Share on other sites More sharing options...
Charlander Posted December 10, 2014 Report Share Posted December 10, 2014 What do you mean when you say ping noise? Link to comment Share on other sites More sharing options...
CleanSierra Posted December 10, 2014 Report Share Posted December 10, 2014 Sounds like a vacuum issue. Check ALL hoses for cracks, or completely disconnected even. It's easy to miss if the back side of a hose has a slit or crack. Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
alaskanzx5 Posted December 10, 2014 Report Share Posted December 10, 2014 Yeah, vacuum leak, dirty air filter maybe? If the dealership idea was cleaning the throttle and a new due filter they might be thinking fuel issue. That could also be maf sensor, intake tubing not secured, tb sensor, tb gasket, I'm sure there is more. A weak battery even When driving the alt can keep up and at an idle it can struggle momentarily until the computer tells it to produce more. t1500bdcp 2 t2d4 15" 1 t600.4 1 t400.2 1 set p1 tweets singer alt, tons of wiring, smd vm-1, 80prs, back seat delete, still in the works, aiming for a 145-147 with the ability to play 25hz up to 50hz. Link to comment Share on other sites More sharing options...
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