04 6 F350 with 196k, has been randomly idling rough since August. Purchased a Scan Gauge II and thus far has not captured a code, no CEL just randomly when I pull up to a stop truck idles rough, as if it is about to run out of fuel. Runs fine once it starts to roll back up to speed after stop and does not occur again for days or weeks. Tech at dealer has been so helpful, unless he gets a code he has no idea. What I do know:
** has only happen once when truck was cold
** majority of occurances the tank is 3/4 or less full
** has only happen twice in one day twice
Scan Gauge data: Hot vs Cold Idle
IPR: 21.1 47.5
ICP: 584-590 1299+/-
FICM: 47-48.5 45.5+
ALT: 14.1 13.9
BAT: 13 11.5
EWT: 182
EOT: 206
KOEO:
IPR: 14.4
ICP: 0-2
FICM: 47.5-48
Operating:
IPR: 21-68 depends on load and acceleration rate, has hit 71 on sever grades for split second or so
ICP: from the 1200+ at inital start to 3000 under hard acceleration
Again so far NO codes captured by the Scan Gauge, or the tech from the OBD when it first began to occur. Fuel filters need to changed in the next 1k, oil has 3k on last oil change, and air filter has 30k till next change.
Thanks for any info in advance.:ford:
** has only happen once when truck was cold
** majority of occurances the tank is 3/4 or less full
** has only happen twice in one day twice
Scan Gauge data: Hot vs Cold Idle
IPR: 21.1 47.5
ICP: 584-590 1299+/-
FICM: 47-48.5 45.5+
ALT: 14.1 13.9
BAT: 13 11.5
EWT: 182
EOT: 206
KOEO:
IPR: 14.4
ICP: 0-2
FICM: 47.5-48
Operating:
IPR: 21-68 depends on load and acceleration rate, has hit 71 on sever grades for split second or so
ICP: from the 1200+ at inital start to 3000 under hard acceleration
Again so far NO codes captured by the Scan Gauge, or the tech from the OBD when it first began to occur. Fuel filters need to changed in the next 1k, oil has 3k on last oil change, and air filter has 30k till next change.
Thanks for any info in advance.:ford: