Posted: Oct 06 2011 at 1:36pm | IP Logged

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Grasping at straws here...

I always let my vehicles warm up a little... even in the summer time.  Many high tech people say baloney to that. Every thing in the truck expands and contracts with temperature changes. Sudden changes in the size of things can not be good. Cold oil int the tranny is not good. Cold oil in the tranny might reduce the RPM as the starter tries to spin the engine for a start. Has the tranny oil been changed?

It might be something in the wiring is losing contact when it is very cold. Stronger currant can push or break through a weak contact . It seems like something bad happened to your truck or perhaps a wire radomly is shorting out. Did you buy the truck new? If not look for service records and try to talk to the ex-owner.

Good Luck..  Don S..

Posted: Oct 07 2011 at 10:29pm | IP Logged

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Another shot in the dark!

One other thing is the volitility of the gasoline you are using.

The colder the weather the vaporization point of the gasoline gets more important. All over the USA the temperature that gasoline vaporizes is lowered in the winter. Summer grade Gasoline does not start engines vey well in the winter. The vaporization point of summer grade can be over 400 degress F. Winter grade can be be like 100 degress F. You might be using summer grade fuel!!!!

 In the old days winter grade gasoline used in the summer time caused many old cars to vapor lock...

Check it out.. Don S..

Posted: Dec 09 2011 at 9:57am | IP Logged

i think it has something to do with a bad contact or solder inside the circuitry of the ipdm, that is only affected by really cold temperature.  i finally caved in and ordered a new ipdm and installed it.  trcuk has not had a problem since but its only been a week.  because this used to happen so infrequent and randomly it is hard to confirm that i fixed the problem!

an expert on just answer.com thinks that instead of the ipdm sending 12 volts to the fuel pump like it should it send only 6 to 8 volts!    which kinda makes me think he may be right because usually it will start with a boost! i dunno its a frustrating problem it pisses me off the nissan wont own upto to it because lots of people are having starting/stalling problems and its not a coincedence. and the thing that really bothers me is that there? fun loving mechanics or supposed techies cant figure out what the problem is even with all there high tech scan tools and poop!