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Old Dec 14, 2010 | 09:46 AM
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f I c m

with key on at buzz it reads 48 4 while cranking it reads 47.2 while cranking and running not sure exactly what key on reading is with key in ignition in the all positions are reading is 0 my only key on position is when it buzzes
 
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Old Dec 14, 2010 | 10:23 AM
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sounds correct. anything over 45 while cranking is good.
 
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Old Dec 14, 2010 | 10:33 AM
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Still will not start cold unless plugged in. Over 40 deg its fine.20-30 no go. New hart and checked glow plugs. Will fuel filters play a roll in weather diff. Haven't changed them in a long time.
 
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Old Dec 14, 2010 | 10:35 AM
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Fuel filter will play a role. What oil are you running? BTW, What year, how many miles?
 
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Old Dec 14, 2010 | 10:55 AM
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Rotella 114k 2005. I have a diablo programmer will that diagnose anything for me. I believe the weight is 15/40. In the past winters I have nver had problems with that weight. I'm on the east coast va so its not like the places up north.
 
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Old Dec 14, 2010 | 11:08 AM
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the Rotella 5W40 will make a HUGE difference in the cold starting.
 
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Old Dec 14, 2010 | 11:22 AM
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Srry I checked it is 5/40
 
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Old Dec 14, 2010 | 11:34 AM
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Originally Posted by lomac9
Rotella 114k 2005. I have a diablo programmer will that diagnose anything for me. I believe the weight is 15/40. In the past winters I have nver had problems with that weight. I'm on the east coast va so its not like the places up north.
The diablo is capable of nothing more then global type genaric code reader. You need a real scanner to get the data you need.
 
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Old Dec 14, 2010 | 04:24 PM
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Ok. I had a friend who owns a mech. Shop put his tester on there and he pulled up po261 and po275 what does this mean and is it something that can be fixed w/ by someone w/ decent mech skills?
 
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Old Dec 15, 2010 | 09:52 AM
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Would like to get this fixed as soon as possible if anyone has any info
 
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Old Dec 15, 2010 | 10:04 AM
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Originally Posted by lomac9
Would like to get this fixed as soon as possible if anyone has any info
0261 is an injector circuit code for #1. 0275 is a contribution balance code for cylinder #5 which means the PCM detected a power difference in that cylinder. Normally means an injector going south. The 0261 could be wire OR FICM problem even though the voltage tests good. Those are the 1st and 3rd cylinders on the passenger side. You might try checking the injector connectors at the cylinder head also.

FWIW--I use an old Diablo Predator that works great for a code scanner and to do SOME diagnostics, but there are a LOT of things it won't show, temps being one (and important)
 
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