Jerseystyle
Senior Member
- Joined
- Feb 11, 2017
- Posts
- 651
- Reaction score
- 350
- Ram Year
- 2007
- Engine
- 4.7
I have intermittent driveability issues. She'll run fine sometimes and run like complete garbage other times.
When running bad the motor will buck and throttle response will be choppy and she'll stumble like it's a fuel issue.
This is a 2007 slt quad cab 4.7 4x4
What I've replaced:
Cats and the rest of the exhaust back.
coils
plugs
Cam sensor
crank sensor
map sensor
TPS
IAT
Coolant temp sensor
EGR
O2 sensors
fuel pump assembly
She seems to run fine after I reset the PCM and then turns to garbage after a while.
Yesterday she was running okay taking my daughter to the dentist but on the way home was acting up. I was using cruise control and when it starting acting up the cruise would turn completely off and I couldn't turn it back on. I pulled over, pulled the pcm fuse and turn the key to run. Waited for the second ding and replaced the fuse. Cruise worked again but only for a few minutes as it started to run bad again.
The last week I've been doing a lot of research on live data pulls from a scan tool. Specifically diagnosing problems by utilizing the stft and ltft readings. This would point to fuel issues including injectors and what not. But all the fuel trim readings are within normal tolerance even when she's at her worst.
I'm at a loss....
Yesterday I pulled the PCM and opened her up to check for any visual problems like something burned up but didn't see anything.
Sent from my SAMSUNG-SM-G890A using Tapatalk
When running bad the motor will buck and throttle response will be choppy and she'll stumble like it's a fuel issue.
This is a 2007 slt quad cab 4.7 4x4
What I've replaced:
Cats and the rest of the exhaust back.
coils
plugs
Cam sensor
crank sensor
map sensor
TPS
IAT
Coolant temp sensor
EGR
O2 sensors
fuel pump assembly
She seems to run fine after I reset the PCM and then turns to garbage after a while.
Yesterday she was running okay taking my daughter to the dentist but on the way home was acting up. I was using cruise control and when it starting acting up the cruise would turn completely off and I couldn't turn it back on. I pulled over, pulled the pcm fuse and turn the key to run. Waited for the second ding and replaced the fuse. Cruise worked again but only for a few minutes as it started to run bad again.
The last week I've been doing a lot of research on live data pulls from a scan tool. Specifically diagnosing problems by utilizing the stft and ltft readings. This would point to fuel issues including injectors and what not. But all the fuel trim readings are within normal tolerance even when she's at her worst.
I'm at a loss....
Yesterday I pulled the PCM and opened her up to check for any visual problems like something burned up but didn't see anything.
Sent from my SAMSUNG-SM-G890A using Tapatalk