EZeis
TDR MEMBER
Hello all,
2018 Ram 3500 SRW aisin transmission 4wd. 102k miles. No codes. All factory stock. No prior issues or codes. Not a single part has be replaced other than general maintenance. I run in tow/haul and full-on exhaust brake all the time since it was new. So, if anything, its worn vs soot built up.
My exhaust brake started having issues on cold startup. It would either not come on or only partly. Only did it when below 20's, intermittently. Now it's doing it in warmer weather. Like today it was 70F and the engine was cold but no exhaust brake warm-up. It came on partly at the first stop about a 1 mile down the road. Also, it is starting to not always coming on right away at speed, like a 5 second or so delay. The truck runs find though sometimes I get a throttle delay. I've monitored boost as high as 32 psi on the dash. I also noticed the truck shows boost while the exhaust is working, but I don't monitor that screen on the dash. But I don't recall it ever showing boost and exhaust braking HP at the same time. Note, once or twice during the one winter I did have the exhaust brake stick on during throttling.
I have been watching the turbo actuator command and position, and it always follows the command, which I assume is the PCM command. So, I assume it's not the actuator as it does follow the command unless it's not reporting correctly. I was thinking it needs the turbo actuator replaced but no codes and the position follows the command. I don't want to drop almost a grand on an actuator if that's not the actual issue.
Another odd thing that started the same time is my engine coolant temp runs higher than it ever has while towing and towing up grades. normally the fan would keep the engine 212F and less. Now I can see coolant temps up to 224F. It's like the fan control is off spec. The fan doesn't seem to come clear up to speed when it should and when it does it runs until the temp drops to the 180's. Not sure if the two are related.
I've been on tech authority trying to buy a factory service manual and it just keeps sending me in loops between tech authority and MoparTSP with no signs of buying a service manual. I haven't kept up on the later trucks, so I was trying to learn what all items the PCM looks at to command the exhaust brake or maybe a trouble tree. Maybe they don't sell them anymore and I need a subscription to access factory service data.
Thanks,
Earl
2018 Ram 3500 SRW aisin transmission 4wd. 102k miles. No codes. All factory stock. No prior issues or codes. Not a single part has be replaced other than general maintenance. I run in tow/haul and full-on exhaust brake all the time since it was new. So, if anything, its worn vs soot built up.
My exhaust brake started having issues on cold startup. It would either not come on or only partly. Only did it when below 20's, intermittently. Now it's doing it in warmer weather. Like today it was 70F and the engine was cold but no exhaust brake warm-up. It came on partly at the first stop about a 1 mile down the road. Also, it is starting to not always coming on right away at speed, like a 5 second or so delay. The truck runs find though sometimes I get a throttle delay. I've monitored boost as high as 32 psi on the dash. I also noticed the truck shows boost while the exhaust is working, but I don't monitor that screen on the dash. But I don't recall it ever showing boost and exhaust braking HP at the same time. Note, once or twice during the one winter I did have the exhaust brake stick on during throttling.
I have been watching the turbo actuator command and position, and it always follows the command, which I assume is the PCM command. So, I assume it's not the actuator as it does follow the command unless it's not reporting correctly. I was thinking it needs the turbo actuator replaced but no codes and the position follows the command. I don't want to drop almost a grand on an actuator if that's not the actual issue.
Another odd thing that started the same time is my engine coolant temp runs higher than it ever has while towing and towing up grades. normally the fan would keep the engine 212F and less. Now I can see coolant temps up to 224F. It's like the fan control is off spec. The fan doesn't seem to come clear up to speed when it should and when it does it runs until the temp drops to the 180's. Not sure if the two are related.
I've been on tech authority trying to buy a factory service manual and it just keeps sending me in loops between tech authority and MoparTSP with no signs of buying a service manual. I haven't kept up on the later trucks, so I was trying to learn what all items the PCM looks at to command the exhaust brake or maybe a trouble tree. Maybe they don't sell them anymore and I need a subscription to access factory service data.
Thanks,
Earl