Have been working on my car for awhile now and fixed a few items. But it would seem that I have no juice going into my ignition coil. I was wondering if this happens often and is there a common cause to this problem?

Sorry I for got to add the year its a '92 245.

the juice follows a blue wire from the 92's ignition switch to the coil

Volvo® is a registered trademark of Ford Motor Company


Viton® is a registered trademark of DuPont Dow Elastomers


Loctite® is a registered trademark of Loctite Corp.


Teflon® is a registered trademark of E.I. DuPont de Nours & Co., Inc.


Dexron® is a registered trademark of General Motors Corporation.


Bendix® is a registered trademark of Allied Signal, Inc.


Goodwrench® is a registered trademark of General Motors Corporation.


Helicoil® is a registered trademark of Emhart Industries Inc.


Plastigage® is a registered trademark of AE Clevite, Inc.


Torx® is a registered trademark of Camcar Div. of Textron, Inc.


Motorcraft® is a registered trademark of Ford Motor Company.


Havoline® is a registered trademark of Texaco Lubricants Co.


DEX-COOL® is a registered trademark of ACDelco, Inc.


Optikleen® is a registered trademark of General Motors Corporation.


Lubriplate® is a registered trademark of Fiske Brothers Refining Co.

Does it go from the battery to the ignition switch to the coil? Or am i missing something between the switch and battery.

If it's an 85-88 car, and you really do need to specify this when you post, there is a plug below, behind, or beside the coil. Trace the wires right off the coil, and you'll see a blue and a white/striped wire going to a grey two-pin connector.

I replaced parts for a whole day on an 87 that intermittently cut out, finally catching this plug in the act. Even though it's snapped together, the contacts didn't always touch, so you have to squeeze it together tightly. MAybe tighten up the socket side a bit by bending with a tiny screwdriver. And that solved the problem on my neighbor's car for about a year now.

--
Rob Bareiss, New London CT ::: Roterande Fläkt Och Drivremmar!

Rob,

What's interesting is that this plug isn't shown in the '87-'88 Wiring Diagram green book, or any where else that I know of.

Which tends to confirm my growing suspicion that the green book diagrams are drawn early in the game and then never updated. (There are other "lapses" too.)

If I've missed that plug in "the literature", please let me know.

Bruce
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.

Dear Bruce,

I cannot recall ever coming across physical wire harness documentation for any 240s.

The grounds are listed in the beginning of the WD manuals.

The multi-pin connectors are sometimes pinned-out and color coded in the detail pages of the WD manual, or on pages before the fold-out overalls in the older WD manuals.

The locations and placements are drawn in the parts list drawings.

But the combining of these sources still leaves wire tracing to the hands-on owner. A good example would be the internal splices made to distribute +12 in the engine fuel injection harness, or those to parallel the injectors. Just a dot on the schematic, no physical reference.

In this instance, with +12 to the coil, there are two such splices inferred by the dots and symbols on the schematic, but no hints as to where to look for them. Rob's photo is a keeper! I can't say if it applies to a '92, but worth a look, for those not under deluge from the sky. The '89 in my garage doesn't have that gray two-pin plug, just a big blue wire going into the harness headed for the firewall.

--
Art Benstein near Baltimore

Hi Art,

I think I'm referring to what you call the "detail pages", as well as the fold-outs. In both cases I can find many small rectangles that I assume to represent connectors for all the "Firewall Plug" items and several others.

In the "detail" pictorials (?), the rectangles are empty. In the fold-outs they have 2 dots inside. For example, the Instrument panel detail on p62 of the '87-'88 WDs, rectangle connector symbols are shown in the lines for Temp and Oil pressure senders, Alternator D+, and several others I'm not all that familiar with.

The same is true for the Charging system (p16) and Starting circuit (p18), where the rectangle symbols are identified as "A" Connectors.

But for the Computerized ignition system (p20), no such connector symbols are shown in the coil primary wiring -- nor are they shown in the fold-outs.

Therefore, my comment to Rob is based on the fact that he did find a Coil primary connector on an '87, but there is no hint of it in these '87-'88 diagrams. So I guess "sometimes" is the operative word when you say, "The multi-pin connectors are sometimes pinned-out and color coded in the detail pages. . ."

If it wasn't so wet, I'd go out and look at the old '87 wagon coil. But I believe it does have the Coil connector -- which I would have expected to see in the diagrams, but not any more.

Bruce
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.