INTERNATIONALS 9400i

I have the Intl 9400i and it is fairly easy to work on it, as far as working on trucks goes. I do a lot of work on it at home. Bigger, more technical items, it goes to a local shop. I got the ISX in it as opposed to a Cat. I did have to make a few mods to the ISX to get it where it would perform like I wanted. That 10 spd with 3.36 rears ought to be a challenge unless you are only going to be on 4 lanes all the time with no mountains. Quite an RPM spread on the shifts. I would prefer the 3.55 rear in the Pete. I have a 13 spd, but I primarily shift it like a 9 spd unless under a hard pull, heavy, or running big hills. I have 3.42 rears in my 9400i, but for my operation, the 3.55's would be a better choice. That may happen later, as I am considering going to a single drive w/lockers and a lift pusher axle.

The 9400 will maybe get you a few tenths better mpg than a 9900, just because of it being a little more aero and if they are spec'd similarly. But we all know, the majority of good mpg comes from driving it right. I have seen decent mpg figures from 9900's and lousy ones from some 9400's.

I do know that the 9400's and 9900's do hold up well. I have liked International since driving them year round in the Alaskan interior for 10 years in the 80's and early 90's.

 

yes its all in how you drive, when i was at millis transfer back in the 90's they said keep the rpm's around 1200, but i am surprise a big hood like the 9900 won't have much drag on it as a slooped hood like the prostar or T-660, there has to be at least 1 mpg differance, and at 3 dollar a gallon thats a lot, 5.5 verse 6.5 at 2500 miles per week

 

there was some one on yhis forum who had to replace his twin turbo's on his cat, over 3 grand. I can get a new one no core for $580 for my ser 60 det. that price alone would get me looking for alternatives. I have a intl that I bought over 11 years ago. still going strong.

 

Generally speaking detroits usually get better m.p.g. if you are looking to buy with mileage in the 700,-800,000 range with out any major work being done to it, you can expect to do some major work in the near future. by 900,000 miles, I would expect to replace something major. I have gone over 1.1 million miles without anything done, except a head gasket at 750,000, but that was a week off work, plus somewhere around $1300 years ago. ring's, piston's, e.t.c. cost a lot more & while you may only need the one part that is bad, once you gon into an engine at high mileage most will tell you might as well do it all while it's open, cheaper in the long run. mine lasted as long as it did, cause I was the only one driving it & maintaining it. my truck pulled light loads before I got it & it was not abused. it was an old wal-mart truck. I would not be afraid to get a truck with high mileage, but I just would expect to spend 6-7 grand in the next 2 years or sooner. that being if something needed replaced, you may go 4-5 years just replacing the normal wear & tear.I like the detroit, cause I had good luck with it. on e thing I was told about a cummins, I think the n-14 it the cam needs replacing, the whole block has to come out cause the cam is in the center of the block. on mine it is a overhead cam & you dont even need to take the head off, real inexpensive to replace the cam if needed compared to the n-14. though my truck is a 95' so all the parts are usually 50 to 70% cheaper than newer models. my inframe I just had done cost me $6800 plus tax & 2 weeks down time. on your choice's I would like the looks of the intl , but like the detroit engine. let us know if & when you choose, I have a lot of great tips for you. good luck.

 

Does anyone know where I can get a wiring diagram for 9400i cab ....international wants $340 for a cd rom manual ... I bought the engine wiring diagram from cummins for $16. International reams customers... I know there must be a wiring diagram floating around for a reasonable price somewhere.

TIA

 

No clue about a wiring diagram. But, the 9400i is a favorite. It feels very heavy, rides nicely albeit it doesn't turn very tight, the interior is pretty nice weather you get the standard or Eagle interior. Over all, very good visibility.

 

Old International ISIS software is availble in internet to download. Try to google for torrent files.

You need no new DVD for $350. Old info is not top secret.

 

Ok, so you bought at a basic two page fold-out for the engine, $16 is pretty cheap. The rest of the truck is about 200 pages! What do you expect? It isn't like Amazon sells thousands of these every month to keep the cost down! Nobody is ripping anyone off. I am surprised you even had the chance to buy it. I have never heard of anyone being able to buy it by CD unless you where a dealer.
As far as circuit diagrams and International goes, very often they change up the circuits. Some circuits remain unchanged over the years, but most get revised. So no, you cannot use just any wire diagram for your truck. You really need the correct one. If you have a 2006, chances are your truck was built sometime in 2005. For the date range the only applicaple wire diagram series for your truck is S08316 which covers 9400i built Dec 1, 2005 to Feb 28, 2007. If you need help with one or two things I can help, but I can't give you the whole truck.