Cold Weather- sometimes engine turns over but won't fire - Nissan Titan Forum
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#1 Old 01-10-2010, 12:57 PM
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Cold Weather- sometimes engine turns over but won't fire

Bought my 2007 Titan last Spring. Had no starting problems until outside overnight temperatures dropped into teens and twentys this Winter. After cold soaking overnight, engine would fire right up sometimes but sometimes would turn over but not fire. Bought new battery. Didn't correct problem. Just had IPDM replaced. Didn't correct problem.

- when failing to start after night of cold temperatures:
Battery and starter seem to be turning engine very well, but no firing at all.
When not firing, if jumper to wife's car's battery, fires up instantly.

Could the starter be too weak at cold temperatures? One person told me he had similar problem with another type vehicle and had to replace the starter. If you know the fix to this problem, please let me know.
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#2 Old 01-12-2010, 01:24 PM
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I doubt it is the starter motor. In the days of carburators (and even 6 V batteries) , I have had cars start with very slow cranking speeds.
Any chance something is not correct with the new IPDM ? What about the fuses in the battery connector (wild guess) ?
I had a GMC and a VW that would not start unless you put a splash of gasoline into the injector body ; then they both ran perfectly .

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#3 Old 01-12-2010, 02:42 PM
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did the battery you got have enough cold cranking amps? I have no problems with mine in sub-zero weather and my battery is 800 cold cranking amps.

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#4 Old 01-12-2010, 03:08 PM
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Have you checked your terminals? Perhaps you have a bad terminal that is not allowing enough power to crank the motor when it is cold. Also, perhaps your battery is a dud? What kind of battery did you get and what are the specs? My Optima yellow top D34 with 750CCA fires my truck up every time even when it is -40 degrees and the truck has not been run in weeks.

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#5 Old 02-01-2010, 12:13 PM
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Same year truck, same problem. Finally, check engine light came on. Dealer found that the air cleaner had not been changed for 50,000 by their "professionaly trained technicians". Anyhow, replaced filter, problem stopped. They did replace the rear O2 sensor, but I think the filter was the problem. Truck sat in drive for 2 days at 10deg.F, fired up this morning just fine. Worth a try.
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#6 Old 02-01-2010, 02:39 PM
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Here's some infos on it.
Attached Files
File Type: pdf NTB04-111b.pdf (121.4 KB, 1043 views)

Titan/Armada part numbers

Nissan's OBD II codes

Truetrac 305.5 WHP 370.4 ft/lbs tq.
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#7 Old 02-06-2010, 07:39 AM
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How thread initiators cold-start problem was resolved

Thanks all for your inputs. Dealer had to replace both the IPDM and the main computer (I don't have service invoice in front of me now, and I can't remember the proper name of the computer. But it's the one that the federal government says must be warrantied in all vehicles for 8 years; that one.) The senior tech said they found the IPDM was bad by tapping on it and observing changes in output functions. They thought that would solve the problem, couldn't verify because daily low temps had risen too high for cold soak. Next cold front came in a week later and truck would not start, exhibited same symptoms as original ones. Went back to dealer. Dealer checked with NISSAN. NISSAN recommended testing main computer by putting in freezer to cold soak and test for errors. That uncovered error condition that wouldn't allow secondary power to the IPDM (if I remember correctly what the senior tech told me). Brought the truck back home. Daily low temps have since dropped to levels at which truck would not start before. Now truck starts right up. Problem resolved by replacing both IPDM and main computer.
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