Andrew Belser
Junior Member
hello again,
Since i bought my 2001 5.9l 4x4 sport offroad package a year ago, ive had pinging issues. I first had them only in overdrive around 2000rpm. First thing i did was spark plugs, then distributer cap and plug wires. This only made the pinging WORSE. It started pinging in 2nd and third under acceleration and in overdrive as well. Last weekend I did the plunum gasket and put an aluminum plenum plate in it. This only made it even worse...I do a decent amount of towing for my job so i need to get this problem fixed. I cant go over 60mph or 2000 rpm in OD on the highway. And i feel bad fir everyone behinde me on the on ramp. Ive read about clogged cats and ecu flashing. Planning on removing my forward o2 sensor soon to test if the cat is clogged. Ive tried searching these fourms but all my searchs pull up 0 threads. I know this is a common issue but I've done a lot to this truck to solve this problem and its only gotten worse. The plenum gasket drastically improved my mpg but thsts it. Im using Champion spark plugs. So after the plenum gasket repair, the pcv valve was rattling for awhile. If i unplug it and block off the hose the engine dies. Is this normal? Need help guys. What dies the ecu flash do? Or should I inspect the timing chain? All replies are appreciated. Thanks
Since i bought my 2001 5.9l 4x4 sport offroad package a year ago, ive had pinging issues. I first had them only in overdrive around 2000rpm. First thing i did was spark plugs, then distributer cap and plug wires. This only made the pinging WORSE. It started pinging in 2nd and third under acceleration and in overdrive as well. Last weekend I did the plunum gasket and put an aluminum plenum plate in it. This only made it even worse...I do a decent amount of towing for my job so i need to get this problem fixed. I cant go over 60mph or 2000 rpm in OD on the highway. And i feel bad fir everyone behinde me on the on ramp. Ive read about clogged cats and ecu flashing. Planning on removing my forward o2 sensor soon to test if the cat is clogged. Ive tried searching these fourms but all my searchs pull up 0 threads. I know this is a common issue but I've done a lot to this truck to solve this problem and its only gotten worse. The plenum gasket drastically improved my mpg but thsts it. Im using Champion spark plugs. So after the plenum gasket repair, the pcv valve was rattling for awhile. If i unplug it and block off the hose the engine dies. Is this normal? Need help guys. What dies the ecu flash do? Or should I inspect the timing chain? All replies are appreciated. Thanks