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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 07-19-2007, 02:20 PM   #1 (permalink)
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Vacuum Diagrams (alldatadiy.com)

Has anyone use alldatadiy.com? I need REAL SPECIFIC vacuum diagrams for my 1989 Ford E250 XLT Sportwagon 7.3 IDI.

The auxiliary heater supply hose cutoff solenoid is vacuum controlled, and I cannot find the "inside" end. I do not want to pull the whole dash to find it. I doesn't seem to terminate into the heater control levers. I don't know where to look next, the vacuum bundle is tightly wrapped in tape and I can't see where it goes.

I also am having cruise control problems, which are not covered in any depth by the "dumb" manuals.

Is the subscription worth $25? Does it REALLY give me all the specific info I need? Anyone tried the serivice? Anyone have the Heat/AC vacuum system diagram?

zac
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Old 07-20-2007, 06:05 AM   #2 (permalink)
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Re: Vacuum Diagrams (alldatadiy.com)

Check out..... http://www.members.shaw.ca/k2pilot/ re the speed control.
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Old 07-20-2007, 02:55 PM   #3 (permalink)
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Re: Vacuum Diagrams (alldatadiy.com)

I signed up for the service a few weeks ago. Mainly because I just bought my truck last month and haven't seen the printed manuals on Ebay yet. Compared to the printed versions I would have to say Alldata is horrible. I would take a Mitchell or Motor manual any day. To make matters worse, I signed up for 3 years to save a few pennies. UGH!!

You're better off going to Autozone.com and using their repair info area. It seems to give the same info and it's free.
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Old 07-20-2007, 10:48 PM   #4 (permalink)
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Re: Vacuum Diagrams (alldatadiy.com)

From what I could find out today there are no vacuum lines to the rear.. everything is done from the dash. Really sketchy info though...
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93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93

Toys: 2006 37' Triple E Embassy coach (powered by Cummins), 18' Sylvan Pro Fish with Mariner motors.

Proud Canadian BOOB man too!!

Please PRIVATE MESSAGE only!! ...
Please DO NOT.....visitor message me...
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Old 07-23-2007, 12:08 PM   #5 (permalink)
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Re: Vacuum Diagrams (alldatadiy.com)

I joined alldatadiy for about an hour. Long enough to see that they don't have the diagram I want. I will say to their credit they gave me a prompt refund (or said they did).

This is my SPECIFIC problem; there is a vacuum-servo valve that cuts OFF the coolant flow to the rear heater core. I can't find what ACTUATES that valve.

I think its been bypassed and removed in my van, there is a brass "elbow" linking two vacuum lines together up behind the heat/ac control module. One vacuum line (small colored plastic) goes to the cutoff valve, the other (thicker black rubber) goes back into the engine compartment and then to nowhere.

I can't figure where is was originally supposed to go, and I can't figure what the "missing" part is, and how it was actuated from the controller.

I've closed the valve with a zip-tie which allows the AC core to cool the rear air (the heater always won) which I will clip in cold weather. However, I might fix this thing if I could figure it out.

Plus my cruise doesn't work in a halfarsed way (will keep a low speed, but not a high speed, like it can't get enough vacuum to pull the cable hard enough), which I suspect is a vacuum leak, not a totally broken thing. Maybe this hose goes in the missing port, or something.

Any clues are welcomed.

zac
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