Hi All,
I have a 2006 T1N, 307k miles, I've had it for almost 40k miles. I have an issue that has persisted since I bought the van, which has proceeded to get worse in the last ~10k miles.
*Quick FYI the transmission was replaced at 292k miles and this issue has remained, so not sure how it could be transmission related.*
The Issue:
When I am slowly accelerating from a standstill or a slow roll, the van will 'hiccup' somewhere between 5-15 mph. If I accelerate a bit faster, the issue is less severe than when I am egg-shelling the accelerator pedal. This hiccup used to only happen on acceleration, now it happens when I am decelerating to a stop. It is generally only one 'hiccup' on accel or decel. Sometimes when I accelerate very quickly, no matter the speed I am driving, I will get black smoke from the tailpipe. Before the engine gets to operating temp, sometimes I will get multiple, less-severe hiccups when accelerating slowly, or going up a hill.
A bit before the transmission went, I pulled the EGR valve which had the black soot, but did not feel like it stuck. I cleaned it with carb cleaner, but don't remember if that did anything for this issue.
The check engine light is not on.
Thank you for any insight! Would like to try and self-diagnose this before I pay a mechanic to.
I have a 2006 T1N, 307k miles, I've had it for almost 40k miles. I have an issue that has persisted since I bought the van, which has proceeded to get worse in the last ~10k miles.
*Quick FYI the transmission was replaced at 292k miles and this issue has remained, so not sure how it could be transmission related.*
The Issue:
When I am slowly accelerating from a standstill or a slow roll, the van will 'hiccup' somewhere between 5-15 mph. If I accelerate a bit faster, the issue is less severe than when I am egg-shelling the accelerator pedal. This hiccup used to only happen on acceleration, now it happens when I am decelerating to a stop. It is generally only one 'hiccup' on accel or decel. Sometimes when I accelerate very quickly, no matter the speed I am driving, I will get black smoke from the tailpipe. Before the engine gets to operating temp, sometimes I will get multiple, less-severe hiccups when accelerating slowly, or going up a hill.
A bit before the transmission went, I pulled the EGR valve which had the black soot, but did not feel like it stuck. I cleaned it with carb cleaner, but don't remember if that did anything for this issue.
The check engine light is not on.
Thank you for any insight! Would like to try and self-diagnose this before I pay a mechanic to.