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  #11  
Old 12-03-2010, 02:19 PM
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latitud latitud is offline
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vacuum leaks will cause erratic idle, what are the chances you have a cracked hose or maybe even a bad brake booster fitting?
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  #12  
Old 12-03-2010, 03:20 PM
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Originally Posted by latitud View Post
vacuum leaks will cause erratic idle, what are the chances you have a cracked hose or maybe even a bad brake booster fitting?
Had the same problem w/ my friends 360 Ram same rpms and everything turned out to be a vac leak hose was cracked try looking for that before heading off to a mechanic or throwing more parts at it hopefully thats all it is good luck!
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  #13  
Old 12-04-2010, 12:23 AM
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ill check tomorow on that vac leak, thatd be nice if thats all it was, leanin towards a cummins swap tho lol
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  #14  
Old 12-04-2010, 12:34 AM
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When it first starts up it idles like nothing is wrong, but when it gets to operating temp it idles very rough at 500 rpm and sometimes even 250 rpm, it has progressively gotten worse and its a nightmare to drive. I just dont know anymore
I was just wondering because I used to have the same problem. Only with mine ('81 D-150), there was no telling how the vacuum lines were supposed to be because so much had been "engineered" lol, but after it had warmed up and I was stuck at a light or something, I would have to put it in neutral just to give it enough gas to keep it from stalling. The idle was adjustable, though, so we kicked it up a notch and that seemed to take care of it.

- Cajun
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  #15  
Old 12-04-2010, 04:44 PM
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Originally Posted by CajunDodge View Post
I was just wondering because I used to have the same problem. Only with mine ('81 D-150), there was no telling how the vacuum lines were supposed to be because so much had been "engineered" lol, but after it had warmed up and I was stuck at a light or something, I would have to put it in neutral just to give it enough gas to keep it from stalling. The idle was adjustable, though, so we kicked it up a notch and that seemed to take care of it.

- Cajun
yea there is a spot on my TB to adjust the idle but its plugged, i dont want to really screw with it ya know, just wanna find out what the problem is. cuz its gonna get scary when the snow starts if its still runnin like this, im taking it to one of my buddies that used to be a tech at a ford dealer tomorow but if he cant find out what it is, its still goin in tuesday.
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  #16  
Old 12-04-2010, 05:18 PM
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hmmm...I have liked the 318's I have had but I agree (and it don't matter what engine you have, this applies to all) the electricals, the sensors, the computers...all make things a bit difficult to diagnose and can cause driveability problems.
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  #17  
Old 12-04-2010, 05:49 PM
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hmmm...I have liked the 318's I have had but I agree (and it don't matter what engine you have, this applies to all) the electricals, the sensors, the computers...all make things a bit difficult to diagnose and can cause driveability problems.
especially the stuff that wont throw a code or check engine light
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  #18  
Old 12-04-2010, 11:19 PM
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dont get me wrong, the 318 is good in the sense that it can run a long time, i just dont like the little quirks it has that seem almost impossible to diagnose and also its lack of power in the trucks, the reason im getting so irritated is cuz im in college and dont have alot of money to be throwing at this thing. hopefully next week the shop will find the problem, ill keep updates as i find stuff out.
I bet its something minor ....fuel filter
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  #19  
Old 12-04-2010, 11:43 PM
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One thing them moors were known for was the heat crossover in the intake would plug up with carbon and that caused idling probs.. had to take off intake and heat tank it to clean out heat crossover... ??? Just a thought.. also sounds like a cracked dist cap?? a lil moisture in there will cause endless grief
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  #20  
Old 12-05-2010, 06:11 PM
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Its not the 318...Its one of the components that make/help the 318 run thats wrong. Do some more looking into it and im sure you'll find out what is wrong.

On another note, I love my 318! I have 178,000 miles on mine. Great engine, Not weak....Not sure what your talking about mine has plenty of power and no weak spots. Maybe you have a blown plenum? Also, Have you thought about a bad CAT? That could be all of your problems right there....Might wanna Look into that. Whatever it is, keep looking and asking questions we'll be here to give you some idea's.
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