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1968-Present E-Series Van/Cutaway/Chassis Econolines. E150, E250, E350, E450 and E550

where's computer

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Old Nov 25, 2004 | 08:07 AM
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where's computer

Anyone know? I've heard that an E-250 w/carbed 351W manufactured 7/86 has a computer but have been unable to find one. Thought the only electronics was the ignition box @ driver-side on top of wheel well.
 
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Old Nov 27, 2004 | 01:51 PM
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My '85 is behind a plastic panel in front of the passenger seat. In front of the heater.
 
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Old Nov 28, 2004 | 06:22 AM
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Didn't see anything like that.
I took the entire A/C-heating system out. Too many parts needed to be replaced/repaired, door flaps rusted out, etc. Took out all ductwork, controls, and 90% of the wiring. Finally found some space to put some decent hidden speakers. I live in miami where it's only cold about 7-8 mornings a year. Plan on putting power-converter powered "In the room" A/c behind driver seat w/exhaust going to a fabricated floor outlet. Want A/C but don't want all the mess (primarily the drain on engine) in the engine compartment. Besides, the best price I could get for replacing the necessary components was around $950.00. From Home Depot, the parts, including duct material so I can have the a/c coming out where I want it, cost about$675.00. This afternoon I'm planning to cut a piece of sheetmetal to block off the hole where the housing for the heater core and A/C core went through the firewall on the passenger side. I'll look around again for a computer.
Thanks.
 

Last edited by munrow; Nov 28, 2004 at 06:25 AM. Reason: add more
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Old Nov 28, 2004 | 02:20 PM
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An E250 may not have the computer. In 86 the 351 was probably a 4bbl model with duraspark ingntion. You may get more drain on the engine from that "aftermarket" unit than actually fixing the factory a/c.
 
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Old Nov 29, 2004 | 03:10 AM
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I looked all around under dash and still didn't find anything. No room for hidden stuff with all the A/C duct-work gone.
Do you think using a power inverter to run an A/C unit will be more taxing on the engine? And, if so, could I change alternators to make up for it?
 
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Old Nov 29, 2004 | 07:52 AM
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Originally Posted by munrow
Do you think using a power inverter to run an A/C unit will be more taxing on the engine? And, if so, could I change alternators to make up for it?
A bigger alternator may help... a second battery as well... but both are still going to be an additional load on the engine. Power is power... it has to come from somewhere... for example, a 1000W continuous duty power invertor will draw about 83 amps from the vehicle's electrical system. Your engine is definitely going to notice something like that.

[Ohm's law: watts/volts = amps]
 
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Old Nov 29, 2004 | 12:00 PM
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I know power has to come from somewhere, but am thinking a power inverter w/bigger alternator would be less of a drain on the engine.
 
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