I have two issues going on with my car that I'm not sure if they are related or independent of each other. However, they started happening at the same time.
The first problem is that it will not start. It wont even try to crank. I have found this is typical when it is up to temperature. I haven't noticed it when the car has sat for a few hours or over night. When I turn the key it makes no sounds other then you can hear things like the relays clicking on and what not. It doesn't have the normal clicking sounds as when the battery is dead. I have had the battery tested and its charge is good. The connections on the battery are solid. One thing I did notice that is on the little gear selection screen. When it starts normally it shows a P when I turn on the key. I know it wont start if I turn the key and this screen is blank. Once the P comes back after a few seconds to minutes of trying to start I know it will start that try.
The second problem. When I am at a stop and accelerate at a normal speed the car stutters at around 1,000 rpm almost like it dies and comes back on. If I hard accelerate it doesn't have this issue. The last time I drove it today it actually did die after switching to drive from reverse and beginning acceleration. I have put it in park and slowly revved the motor and it will stutter at around the 1,000 mark when I do this. If I rev it quick there isn't a stutter noticeable. I am guessing maybe this problem is fuel or spark related?
The codes I am currently getting are:
U1000 Can Comm Circuit
U1001 Can Comm Circuit
P0420 TW Catalyst Sys-1
P0430 TW catalyst Sys-B2
The P0420 and P0430 have been present on the car most of the time I have had. I am told it has aftermarket catalytic converters and they are causing the codes but I can not confirm this.
I have a scanner that can show live data of sensors if this is helpful.
The first problem is that it will not start. It wont even try to crank. I have found this is typical when it is up to temperature. I haven't noticed it when the car has sat for a few hours or over night. When I turn the key it makes no sounds other then you can hear things like the relays clicking on and what not. It doesn't have the normal clicking sounds as when the battery is dead. I have had the battery tested and its charge is good. The connections on the battery are solid. One thing I did notice that is on the little gear selection screen. When it starts normally it shows a P when I turn on the key. I know it wont start if I turn the key and this screen is blank. Once the P comes back after a few seconds to minutes of trying to start I know it will start that try.
The second problem. When I am at a stop and accelerate at a normal speed the car stutters at around 1,000 rpm almost like it dies and comes back on. If I hard accelerate it doesn't have this issue. The last time I drove it today it actually did die after switching to drive from reverse and beginning acceleration. I have put it in park and slowly revved the motor and it will stutter at around the 1,000 mark when I do this. If I rev it quick there isn't a stutter noticeable. I am guessing maybe this problem is fuel or spark related?
The codes I am currently getting are:
U1000 Can Comm Circuit
U1001 Can Comm Circuit
P0420 TW Catalyst Sys-1
P0430 TW catalyst Sys-B2
The P0420 and P0430 have been present on the car most of the time I have had. I am told it has aftermarket catalytic converters and they are causing the codes but I can not confirm this.
I have a scanner that can show live data of sensors if this is helpful.
Aug 16, 2020 at 6:39 PM
