12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

highest idle

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Old 05-01-2009, 12:22 AM
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i turned up my idle tonight becuz after i installed my injectors if i piped showed it my truck would stall, i turned it up and now it idles at 950... my friend says that will mess up my torque converter... is this true... any ideas on what would be a good idle... keep in mind that wen it was stalling it idled at 850
 
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Old 05-01-2009, 12:26 AM
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something isnt right it should be idling at 850 with the ac on
 
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Old 05-01-2009, 12:30 AM
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well ya thats what it was at, and i never had a problem. then i got these injectors installed and now if it idles at 850 it runs fine... like perfect, but if i just floor it and try to blow smoke it will stall
 
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Old 05-01-2009, 12:31 AM
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you need to turn your turbo up then. sounds like your laging it to much. wheres your starwheel at? how many clicks did you tighten you gov spring nuts?
 
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Old 05-01-2009, 12:37 AM
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i havent ever adjusted my gov spring nuts... well the shop might have. i paid $300 for them to fix my leaky injector and tune up my truck and 3 runs on the dyno at there next dyno day which is saturday... so ya they might have adjusted my gov spring nuts i'll have to ask.. how would i turn up my turbo? oh and my starwheel is now about 3/4 the way forward
 
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Old 05-01-2009, 12:39 AM
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take your star wheel all the way forward it wont hurt anything. block your wastegate only if you have gauges thow and dont let your turbo go over 35psi at all. as far as the idle the only thing i can think up is the gov springs are to tight. didnt you replace your on your own
 
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Old 05-01-2009, 12:42 AM
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no i thought about buying the 4000 ones but i didnt. so they are stock..

oh and if i put my starwheel all the way forward my truck seems slower...

and i dont need to block my wastegate cuz i got the BD boost elbow, and unfortunately i'm hitting 43lbs of boost on my hx35...
 
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Old 05-01-2009, 12:44 AM
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is your elbow open at all?this idle thing is buggin me did it do that before you had the shop look at it?
 
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Old 05-01-2009, 12:48 AM
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no... but i also didnt have the marine injectors. its the injectors that threw the whole idle thing into play.

as for the boost elbow, i just screwed it in as it came in the box.. i still havent made adjustments to it to see if it will actually lower my boost. but i will over the weekend
 
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Old 05-01-2009, 12:56 AM
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oh ya it will make a big differeance screw it out counter clockwise and it will lower it alot. it may actually be in all the way.
 


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