Hi,
Started having an issue with my 03 Expy (5.4 4WD) recently. I've searched and have found a previous thread, but it's very old so I was asked to start a new one.
Last week I was running about 70MPH when I suddenly had a loss of power and the RPM fell to around 300. There was no throttle response at all, but eventually it came back to life and ran fine. 2 days later the RPMs dropped to about 300 again and the battery light came on. The motor sputtered for about 10 seconds and then died, while it was sputtering, there was zero throttle control. Restarted fine and ran great. Now it's happening a couple of times a day, and each time a restart will clear the issue. Other than the battery light, no other lights come on, and nothing else seems out of the ordinary.
It's Drive by Cable, and I've removed and cleaned the throttle body and replaced the TPS to eliminate that from being the issue but it's still happening.
I've read several articles online of possible PCM Issue, Fuel Pump, TPS, grounds, etc but I was hoping to find someone that has had the issue and been able to correct it or at least isolate it to one system.
Started having an issue with my 03 Expy (5.4 4WD) recently. I've searched and have found a previous thread, but it's very old so I was asked to start a new one.
Last week I was running about 70MPH when I suddenly had a loss of power and the RPM fell to around 300. There was no throttle response at all, but eventually it came back to life and ran fine. 2 days later the RPMs dropped to about 300 again and the battery light came on. The motor sputtered for about 10 seconds and then died, while it was sputtering, there was zero throttle control. Restarted fine and ran great. Now it's happening a couple of times a day, and each time a restart will clear the issue. Other than the battery light, no other lights come on, and nothing else seems out of the ordinary.
It's Drive by Cable, and I've removed and cleaned the throttle body and replaced the TPS to eliminate that from being the issue but it's still happening.
I've read several articles online of possible PCM Issue, Fuel Pump, TPS, grounds, etc but I was hoping to find someone that has had the issue and been able to correct it or at least isolate it to one system.