Author Topic: Mysterious black boxes  (Read 1606 times)

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Offline Macguyver38

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Mysterious black boxes
« on: June 11, 2006, 06:55:53 PM »
I was doing some de-construction today on my Ramcharger and was wondering about two little black boxes on the inside of the driver's side fender. They both have three conductor plugs going to them. One has "60 sec" and part #4111180 the other says "90 sec" and part #4111481. Anybody know what these are for? Air conditioning or cruise control maybe? I'm planning on changing all the wiring for a Painless universal 18 circuit harness and need to know if these boxes are necessary.

Also, what do I have to do/change to upgrade the A/C to R134A? The A/C has never worked since I have had the truck. The compressor seems okay. Can I re-use it or do I need a different one?
'86 Ramcharger, 5.9 4x4 project truck. Will have MPI, custom paint, custom interior, custom dash w/Autometer guages...Can't wait!
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Offline Dork

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Re: Mysterious black boxes
« Reply #1 on: June 11, 2006, 09:34:07 PM »
the 4111481 came up with an EGR time delay control switch on NAPA's web site

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Offline DODGEBOYS

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Re: Mysterious black boxes
« Reply #2 on: June 12, 2006, 12:58:04 PM »
get a DYNAMICS change over kit / there about $ 35.00 and comes with everything
put your truck info HERE
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Offline MNYPIT

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Re: Mysterious black boxes
« Reply #3 on: June 14, 2006, 12:32:03 PM »
Youll have to replace ALL of the O-rings in your AC system otherwise your 134 will slowly leak out leaving you with no charge. I've been thinking about doing this to my truck as well, but just don't have the time.
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Offline 84 RC PROSPECTOR

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Re: Mysterious black boxes
« Reply #4 on: June 14, 2006, 12:49:28 PM »
why would you want to go to 134a? it sucks ass. 134a doesnt work nearly as good as R12.
I say fix your ac, and fill it with R12 it will work better and probally end up being the same price if not cheaper then the conversion.
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Offline KThaxton

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Re: Mysterious black boxes
« Reply #5 on: June 14, 2006, 12:55:12 PM »
I did the R134a conversion by using one of those kits from Wal-Mart, 3-4 years ago. No o-ring change. It works just the same as before the conversion, no better, no worse. But, mine was working before the conversion, unlike MacGuyver's
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Offline Macguyver38

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Re: Mysterious black boxes
« Reply #6 on: June 14, 2006, 05:50:04 PM »
Thanks for the info. As for switching to R134A, the choice is not mine to make. R12 is illegal and not available here. It's either convert or cook my brains in the sun.

Any more clues about the black boxes? According to DONK it looks like they are for the EGR system, but I want to be sure before I trash them.
'86 Ramcharger, 5.9 4x4 project truck. Will have MPI, custom paint, custom interior, custom dash w/Autometer guages...Can't wait!
'04 Intrepid, 3.5l daily driver.
'92 Caravan... Parts doner for RC
Newest addition: '96 Ram 1500 p-u, 2wd, 5.9 Magnum, auto.

Offline 84 RC PROSPECTOR

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Re: Mysterious black boxes
« Reply #7 on: June 14, 2006, 07:05:16 PM »
oops,  I thought you were in the states.
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1984/78 Ramcharger  ('78 RC cab with '84 RC front clip and frame), 360 with a 4 barrel carb and hooker headers. np 435 tranny. np 203 t-case (part time conversion) , d60 rear 4.10 gears, 44 front 4.09 gears with 8 lug conversion.

Offline KThaxton

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Re: Mysterious black boxes
« Reply #8 on: June 15, 2006, 07:17:57 AM »

Any more clues about the black boxes? According to DONK it looks like they are for the EGR system, but I want to be sure before I trash them.

Yes, they are EGR timers as Donk said.
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You're absolutely correct, Kendall. My mistake  ;D

Offline Macguyver38

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Re: Mysterious black boxes
« Reply #9 on: June 15, 2006, 02:54:59 PM »
Great! Thanks a million! Now that's two less things to wire and clutter up my engine compartment. Shh! Don't tell the bureaucrats or the tree huggers I'm eliminating one of their stupid smog gadgets. Anyway with the MPI and all the other mods I'm sure the engine will run cleaner than it did when new.
'86 Ramcharger, 5.9 4x4 project truck. Will have MPI, custom paint, custom interior, custom dash w/Autometer guages...Can't wait!
'04 Intrepid, 3.5l daily driver.
'92 Caravan... Parts doner for RC
Newest addition: '96 Ram 1500 p-u, 2wd, 5.9 Magnum, auto.