OK guys… sorry for the long post. You can read over the bolded stuff if it is easier. I am about $2,400 in on repairing my sick Charger and it is still not cured. I need some other ideas to attack this problem. Any advice would be appreciated.
Here are the car’s stats:
Stock 2007 Dodge Charger R/T with 5.7 liter Hemi
Roughly 83,000 miles when problem surfaced in the late fall of 2013
Recent repairs before this problem started:
- ignition switch (associated check engine light code - repaired at dealer)
- front/rear brakes and rotors replaced
- regular oil changes
In the fall I started feeling some sluggishness and a bit of engine vibration with raspy exhaust note when getting back on the throttle after coasting (to regulate speed) or taking foot completely off gas pedal during braking.
Early winter, car stalled traveling 35MPH after light braking and returning pressure back to the gas pedal to speed up. Lost power steering and braking. Local mechanic replaced spark plugs and boots and did a tune up ($750).
The next day, the car stalled at 50 MPH after light braking and returning pressure back to the gas pedal to speed up. Lost power steering and braking (not fun). Started the car right after and it was shaking and knocking. The red lighting bolt light was flashing on the instrument cluster. Called for a tow. Codes for bad throttle body & throttle control module that is paired with it. These items were replaced at a cost of $1600.
Afterwards, no more stalling, but car ran very rough and especially rough at 1500RPM (any gear). Local mechanic found a bad ignition coil and replaced it. Cost was about $80.
The car has not stalled again, but still has a bit of engine vibration with raspy exhaust note when getting back on the throttle after coasting to regulate speed or when taking foot completely off gas pedal during braking. This also happens sometimes when cruising at a steady speed. I can reproduce the problem every time I drive the car, though the mechanic can't (of course).
When I am not switching between 2nd-3rd-4th gears much, as you do in light traffic, the car is fine. When you start regulating speed by letting up on throttle or braking often, it happens when getting back on accelerator.
Interestingly, this issue WILL NOT MANIFEST WHEN IN SPORT SHIFT MODE! Also, when proceeding through the gears, shifting is smooth getting up to highway speed and slowing down from highway speed down to 1st gear (as on a highway with lights and not much traffic, for example).
A trip to the dealer scares me now since I'm already about $2,400 in on this. Maybe I should have brought it there to begin with?
If you read this far... THANK YOU!!!
- Pete
Here are the car’s stats:
Stock 2007 Dodge Charger R/T with 5.7 liter Hemi
Roughly 83,000 miles when problem surfaced in the late fall of 2013
Recent repairs before this problem started:
- ignition switch (associated check engine light code - repaired at dealer)
- front/rear brakes and rotors replaced
- regular oil changes
In the fall I started feeling some sluggishness and a bit of engine vibration with raspy exhaust note when getting back on the throttle after coasting (to regulate speed) or taking foot completely off gas pedal during braking.
Early winter, car stalled traveling 35MPH after light braking and returning pressure back to the gas pedal to speed up. Lost power steering and braking. Local mechanic replaced spark plugs and boots and did a tune up ($750).
The next day, the car stalled at 50 MPH after light braking and returning pressure back to the gas pedal to speed up. Lost power steering and braking (not fun). Started the car right after and it was shaking and knocking. The red lighting bolt light was flashing on the instrument cluster. Called for a tow. Codes for bad throttle body & throttle control module that is paired with it. These items were replaced at a cost of $1600.
Afterwards, no more stalling, but car ran very rough and especially rough at 1500RPM (any gear). Local mechanic found a bad ignition coil and replaced it. Cost was about $80.
The car has not stalled again, but still has a bit of engine vibration with raspy exhaust note when getting back on the throttle after coasting to regulate speed or when taking foot completely off gas pedal during braking. This also happens sometimes when cruising at a steady speed. I can reproduce the problem every time I drive the car, though the mechanic can't (of course).
When I am not switching between 2nd-3rd-4th gears much, as you do in light traffic, the car is fine. When you start regulating speed by letting up on throttle or braking often, it happens when getting back on accelerator.
Interestingly, this issue WILL NOT MANIFEST WHEN IN SPORT SHIFT MODE! Also, when proceeding through the gears, shifting is smooth getting up to highway speed and slowing down from highway speed down to 1st gear (as on a highway with lights and not much traffic, for example).
A trip to the dealer scares me now since I'm already about $2,400 in on this. Maybe I should have brought it there to begin with?
If you read this far... THANK YOU!!!
- Pete
