I have a 06 with 210k miles and it runs great. I always monitor my ficm and deltas with a scan gauge. I have noticed since it has gotten colder that when I first start when it's cold the ficm will bump 43.5 and 44 very briefly before leveling out at 48. No starting issues I've just noticed it. Anything I should do to it or wait for it to get worse.

 

I would test the batteries and charging system, but anything under 45V on the FICM voltage at any time and it should be repaired

 

Mines doing the same thing. I just got it back from ed and he couldnt find anything wrong with it. Everything appears to be in order as far as batts and charging go. Guess ill have to dig a little deeper.

 

My FICM issue is on a cold start and go, it will not accelerate and the GP lite comes on. Try it again and the same thing. Might do it once or 10 times. Finally after the engine builds a little heat, it goes. It started doing this after I got the FICM back from Ed last March for upgrading. Replaced the CKP, CMP and GP controller. So now I just remote start it and after it runs for 10 to 15 minutes, I have no more problem then and for the rest of the day.

DSMMH

 

My '06 was getting a bit slow to start. A brandy-new scangage 2 showed that battery voltage was going down to 10 volts during cold-weather cranking.

Other folk here recommended a battery replacement using Motocraft batteries. I found that the Ford dealer had really decent prices on a pair of 850 CCW Motocraft batteries (right around $110.00 each installed).

The new batteries fixed the slow start problem. My F350 is now boringly (is that a word?) reliable. It starts fine, runs well and happily tows heavy stuff.

Lou Braun

 

So your FICM is dipping below 45 volts on a cold start and Ed is saying it's fine?

Interesting.

Josh

 

Anyone put a battery tender on if it sets more than a few days? That's one thing I have been considering.

 

my ficm was repaired this summer by ed too, its getting colder
out and ficm.sometimes dips to 43.5-44.5 after it starts according to my torque app. no starting problems though

 

Uhmmm ......... there is a difference between saying it is fine and not finding anything wrong with it ........................

 

what tests did you run on the batteries and charging system?

 

I've installed the DC power alternator batteries are only a year old. They have been load tested good. I've had zero issues until it got colder. Starts fine every time just see that 44v flicker on the scan guage for a sec then settles down.

 

Obviously something is wrong, no?

Josh

 

According to Ed's own website, anything under 45 is a problem, so I would have to say yes, there is something wrong.

IMO, anything under 47 is low.

I agree that it is interesting that he did not find anything wrong. I would be carefully inspecting all of the connections in the if it were mine (from the alternator, to the batteries, and to the FICM - incuding the grounds).

 

Don't want to jack the tread. I think this will fit in here. I had autozone test my motorcraft batteries and they said they tested ok (out of truck). When I get in the truck I turn the scangauge on (cold start) and it says FICM is at 48.5 batt volt at 12.6 then I turn the key on the FICM drops to 42 then within 4 seconds is back up to 48.5 - 49 and the batt volts drop to lowest of 10.9 crank the truck and it turns over 3 or 4 times and fires up fine. After its started the FICM stays 48.5 - 49 all day long even up hill. So maybe batteries need replaced?? What do yall think? I want the diehard platinums but nobody within 200 miles carries them.

 

I would say yes if the FICM voltage drops like that with the key on before you start as the glow plugs can pull as much as 96 amps which to me means the batteries are getting weak. My FICM volts at KOEO are 48 to 48.5. If it were my truck I would be buying a new set.