So, I've been trying to hunt down the source of my P0301 issues.
Dealership found a burnt valve - replaced the head.
Cleared codes, came back.
They swapped injectors. Cleared codes, came back, problem did not move.
I changed the coil, plugs, wires, and EGR. O2 sensors and CAT at 160K miles
Problem still exists.
Car idles rough below 850 RPM, but otherwise is fine. Has a growly rattling noise at idle.
So, I put a timing light on it, and get weird results. When the flash is consistent, it runs rough. Periodically it flashes very fast - and runs smooth.
Harness appears to be perfectly fine.
2006 Grand Caravan, 3.8' SXT, side airbags, DVD, etc, owned since new. Trying not to replace, but it also has a transmission clunk.
Of course, this all happens after I go through the entire suspension...
Synthetic oil every 5K miles, tranny service every 30K miles. Axles replaced ones, A/C compressor replaced once, P/S pump and rack replaced once (Factory warranty issue)
Timing light results really threw me.
Ideas?
TankII
Other rides:
'91+ SHO 256K miles, '01 Stratus ES 249K miles (all new suspension and now THAT's throwing codes!), '15 C-Max Energi 36K miles.
Daughter's rides '13 Avenger SXT Rallye appearance 50K miles, '09 Focus 123K miles
Dealership found a burnt valve - replaced the head.
Cleared codes, came back.
They swapped injectors. Cleared codes, came back, problem did not move.
I changed the coil, plugs, wires, and EGR. O2 sensors and CAT at 160K miles
Problem still exists.
Car idles rough below 850 RPM, but otherwise is fine. Has a growly rattling noise at idle.
So, I put a timing light on it, and get weird results. When the flash is consistent, it runs rough. Periodically it flashes very fast - and runs smooth.
Harness appears to be perfectly fine.
2006 Grand Caravan, 3.8' SXT, side airbags, DVD, etc, owned since new. Trying not to replace, but it also has a transmission clunk.
Of course, this all happens after I go through the entire suspension...
Synthetic oil every 5K miles, tranny service every 30K miles. Axles replaced ones, A/C compressor replaced once, P/S pump and rack replaced once (Factory warranty issue)
Timing light results really threw me.
Ideas?
TankII
Other rides:
'91+ SHO 256K miles, '01 Stratus ES 249K miles (all new suspension and now THAT's throwing codes!), '15 C-Max Energi 36K miles.
Daughter's rides '13 Avenger SXT Rallye appearance 50K miles, '09 Focus 123K miles