+- Rawze.com: Rawze's ISX Technical Discussion and more (http://rawze.com/forums)
+-- Forum: Big Truck Technical Discussion... (/forumdisplay.php?fid=1)
+--- Forum: ISX Related Help (/forumdisplay.php?fid=68)
+--- Thread: 2636/SPN 641 FMI 9 (/showthread.php?tid=8969)
Pages: 1 2
RE: 2636/SPN 641 FMI 9 - Cornhauler2 - 06-27-2023
(06-25-2023 )Rawze Wrote:(06-24-2023 )Cornhauler2 Wrote:(06-24-2023 )ktblogistics Wrote: key turned off
unplug actuator
should have 120ohm on actuator side and 120ohm on harness side
So I have 120 on the harness side and 45k on the actuator side.
actuator should have 120 ohms too.
Is this a replacement actuator that was purchased somewhere and not from the OEM/stealert$it?.
I ask that because Volvo Actuators do not have the 120-ohm resistor in them, and they look identical to a cummins because they are both Holset brand.
As far as I know it’s original to the engine. I’ve put about 60k miles on it around the farm since we bought it 3 years ago and it just suddenly started with the check engine light then the stop engine light with the codes I listed.
RE: 2636/SPN 641 FMI 9 - Cornhauler2 - 06-29-2023
..
UPDATE… I put a new actuator on and the check engine light immediately went away and it’s back to no codes, active or inactive.
Also Rawze, the old actuator had a RX part number so it wasn’t original. But it had been on the turbo a long time.
RE: 2636/SPN 641 FMI 9 - Rawze - 06-29-2023
(06-29-2023 )Cornhauler2 Wrote: ..
UPDATE… I put a new actuator on and the check engine light immediately went away and it’s back to no codes, active or inactive.
Also Rawze, the old actuator had a RX part number so it wasn’t original. But it had been on the turbo a long time.
Thanks for the update.
Now .. you need to find out what caused that terminating resistor to fail like that. Things like ...
** Someone using high-power (cb or ham) radio gear that is not grounded properly?.
** Alternator noise is higher than normal due to leaky/weak diodes internally?.
** One of those crappy square-wave, or modified-sine-wave truck stop Power inverters?.
-== You get the picture.