|Posted on Saturday, October 22, 2011 - 04:10 am: ||
The first time it did it I chalked it up as just something random. But since it's done it three days in a row now I have questions. Here it is, I get off of work at 10pm start the bike while I get ready to leave. I don't roll till the coolant temp goes away. I drive about 5 - 6 miles where I stop to have a smoke (can't smoke on state prison grounds). The air temp reading is upper 50's. I shut the bike down by way of kill switch then key. About a minuet later the fuel pump cycles then every 14 seconds (I timed it) it does it again and again and again... It'll keep doing it till I turn the key on for a few seconds then turn the key off and it won't do it any more. Any thoughts? Also ( it didn't do it today) but on colder nights I guess, the LFL/CEL will come on at start up (after my smoke) but will go off after about 30 seconds or so.
|Posted on Saturday, October 22, 2011 - 06:58 am: ||
The ECM will keep the fuel rail pressurized for 10 min, IIRC. Was 20 min at first in 08.
Keeps from vapor locking the injectors.
For the LFL, you need a new IC with the latest firmware Rev (6.2-08/9 or 7.1 for 2010)
Check your firmware at the end of Diag Mode list.
(Message edited by zac4mac on October 22, 2011)
|Posted on Saturday, October 22, 2011 - 08:22 am: ||
Ok I understand keeping the fuel pressure primed, but why would it take three years for it to start now for the lights to start coming on?
|Posted on Sunday, October 23, 2011 - 04:47 pm: ||
The thermistor they use seems to gradually change it's resistance over time and temp cycles.
When new it has a sweep of 800-1400 Ohms, by spec, but over time that range drifts.
Mine measured a sweep of 900-2200 for a temp change of ~60 dF down to 40 when it got replaced.
Yours isn't out of range enough to trigger a DTC during running.
However, early IC firmware had the ECM continuing to monitor sensors AFTER shutdown which is why you get a "historic" at start-up.
That is fixed in the current Revs, 6.2 and 7.1.
That's why it goes away for you when the ECM "goes live" after reaching OpTemp.
|Posted on Monday, October 24, 2011 - 12:13 am: ||
I went thru diag mode today. At the end it said
CAL 1 "
My bike was bought in November '08 and it's an '09 and it was in August '09 last time my bike saw the dealer.