05-02-2018, 06:32 AM
yah the egr runs only off #4 exhausts tube, the modulator could do that, (not bad) just at low rpm the modulator diaphragm will flutter.
i dont think that is it. code 51 is EGR, and means only that egr is dead.
is the cat missing? the cat makes the EGR work other wise its dead. or super weak.
hot only stuttering.
is it misfiring, or bogging or only a hesitation on fast right foot actions.
Spark is first. got good spark wires? HV wire set?
removing TPS turns on CEL, and ECU goes to limphome mode, super rich and retard timing
do you have full power up hills hot.?
clean the maf.
check FPR for regulation? (key on pressure, idle pressure and WOT can reach key on pressure but not fully)
run it with 02 unplugged?
if it was EGR, id make sure the vents on the EGR modulator are not clogged.
at idle the part called "B" here will flutter. the filter and vents must be clean and good cat to get a bark. to bottom hose.
each putt or bark closes V valve, the faster it flatters the more EGR you get, called modulation. The power of the putt is created by the CAT back pressure, and how many hits a second.
http://www.fixkick.com/sensors/EGR/modul...tioned.JPG
i dont think that is it. code 51 is EGR, and means only that egr is dead.
is the cat missing? the cat makes the EGR work other wise its dead. or super weak.
hot only stuttering.
is it misfiring, or bogging or only a hesitation on fast right foot actions.
Spark is first. got good spark wires? HV wire set?
removing TPS turns on CEL, and ECU goes to limphome mode, super rich and retard timing
do you have full power up hills hot.?
clean the maf.
check FPR for regulation? (key on pressure, idle pressure and WOT can reach key on pressure but not fully)
run it with 02 unplugged?
if it was EGR, id make sure the vents on the EGR modulator are not clogged.
at idle the part called "B" here will flutter. the filter and vents must be clean and good cat to get a bark. to bottom hose.
each putt or bark closes V valve, the faster it flatters the more EGR you get, called modulation. The power of the putt is created by the CAT back pressure, and how many hits a second.
http://www.fixkick.com/sensors/EGR/modul...tioned.JPG
http://www.fixkick.com