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Hey everyone.
I was on the board a while ago and was told that the red/white-striped wire should be connected to the tach on my 84 244DL. I connected it instead of the black wire that had been connected to my tach and after driving it for one day, the entire ignition system shut off. No spark no matter what.
I switched the wire from the red/white striped wire back to the black wire, and the car fired up immediately.
I took the cluster out in the dark (stupidly), so I didn't know which wire was originally connected.
Just wanted to share my experience and let people know that on the 84, the black wire is for the tach, not the red/white wire. Maybe there was a change after 84? Or maybe this car's wiring is as wacky as my 740's ;) I hope not. I would just edit or reply to my original thread, but it's been locked now.
Happy Bricking!
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1990 740 Turbo, on its way to stock specs, maybe beyond
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It is a strange story you tell, that is for sure. On our 83 and 84 NA cars (LH2.0) the ignition coil negative wiring was shielded. It was shielded from V/C computer to coil, to ECU, and the color of that wire was gray. There was no white/red for the tach as was the case in previous years, k-jet cars, turbo cars, and all the later LH 240's we've had.
Could be yours has had someone else's fingers in it? Even professionals don't stock striped wire to add or replace in a car.
Why do you suppose a wiring change would take a day to have effect? Or are you thinking the act of pulling out your cluster might have fixed it instead of the modification? Didn't it fire up "immediately" just after you "miswired" it?
Do you have a link to your original post? I can't find it.
Sorry Will, I've asked 5 questions, and brickboard has set a limit on me at 5.
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Art Benstein near Baltimore
Artificial intelligence is no match for natural stupidity.
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Ahh. Art, this is the problem I took days to troubleshoot when I was several hundred miles from home.
I connected the striped wire to the tach, drove the car 200 miles, drove it around for a day and it died on me. I don't know why it would have taken time for the issue to occur other than stressing the ignition system, but it did fire right up when I put the black wire on the tach. I swapped in a good coil, which didn't fix the issue, so I don't think the coil was damaged.
When I finally replaced the red/white wire with the black wire, which the diagrams you linked me to showed running from the coil to the tach, the car fired up instantly.
This is the thread where the red/white wire came up first:
http://www.brickboard.com/RWD/volvo/1447066/220/240/260/280/1984_244_temp_gauge_readings_gas_intermittently_works.html
This is where the problem came up and was diagnosed:
http://www.brickboard.com/RWD/volvo/1448390/84_244dl_start_tach_movement_crank.html
It did indeed have someone else's paws in it. The harness has been replaced by the PO. Perhaps that's the cause. It's a bit odd too, the red/white wire is wrapped around a steel tube of some sort about 8 times. I didn't look to see what the tube was, but I could.
I guess the moral of the story is that you'd better make sure you put the right wire on the tach if you pull the cluster! Haha :D
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1990 740 Turbo, on its way to stock specs, maybe beyond
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Will, I just read through the October threads, and now I know for sure I am thoroughly baffled.
The thought comes to mind how lucky I have been to obtain cars mostly from first or second owners who only took them to the "all makes foreign and domestic" shops near the very end. Most everything I looked at behind the dash and under the hood was as Volvo built it, but now that you bring it up, the very first one we had, an 83 DL from Grandma, had an engine swapped after she "ran it out of oil."
One exception in our fleet is an 83 turbo, owned by an enthusiast, from which I've already shed about two pounds of tie wraps.
It doesn't make sense to me a mistake in ignition wiring would be the difference in running or not over time. Maybe when you get your yellow wire traced, you'll have an "a-hah" moment. Someone built you a challenge in that car.
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Art Benstein near Baltimore
A bargain is something you don’t need at a price you can’t resist.
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This is interesting. The '83 wiring diagram, per Bentley, hence per Volvo, has black wire from coil to tach.
Art, I checked a wiring diagram c. 1980 that you provided somewhere (the filename is, in part, 80ncf63) and it also has black wire from coil to tach.
I use that diagram a lot for the 242 but never noticed this before now.
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'80 DL 2 door, '89 DL Wagon
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You are absolutely correct, and I was wrong. Comparing the 83 and 84 schematics in Bentley show the wire was black in 83 and white/red in 84, which I trust much more than my failing memory of those two cars.
On the '80 wiring, I wasn't even thinking of pre-81 cars, with the small tach in the center of the cluster, when I wrote "k-jet", but yes, our '79 has this wire and it is black.
Then, in '81 and '82 the wire is white/red. Just like '84. Wonder what they were thinking in '83?? But doesn't Will have an '84? And, why would picking the wrong wire "work" for a while? Once again, more questions than answers.
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Art Benstein near Baltimore
I discovered I scream the same way whether I’m about to be devoured by a great white shark or if a piece of seaweed touches my foot.
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I see in Haynes, for the '82, a black wire.
I see on in an '83 wiring diagram, that someone on the BB made available in pdf, a white/red wire.
I don't think it's a matter of right or wrong. I think it just depends on who prepared the wiring diagram.
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'80 DL 2 door, '89 DL Wagon
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Haynes through 1990 model year. Seems like every Volvo I have ever bought has come with a copy of Haynes. But I digress. It's on pp.298-299, "Wiring Diagram for 1982 North American Models."
The pdf's. I'm certain someone here provided a link a few years back. They are 8 1/2 x 11 with several pages per year, the years being '83-'93. The earlier ones are pretty much general diagrams and middle to late get more detailed.
The diagrams are scanned but the page headings are text so it appears someone put these together to make them available. The author is 'Michael' if that narrows it down.
I'm sure others here must have these, too.
I could email them to you. There's not one over 500 KB.
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'80 DL 2 door, '89 DL Wagon
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Never thought to look at those in between year diagrams. Just figured, "first there was...then there was..."
Never assume, I guess...
None of this really seems to explain Will's experience.
I'm sticking with coincidence until further notice.
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'80 DL 2 door, '89 DL Wagon
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Yes, I'm glad I finally read a post that had some relationship to my experience. In my '79 the wire is a shielded gray or black wire to the tach. Every other 240 after 79, I have look at (removed or installed a tach) has had a red white wire for the tach. The rest of this discussion, I'm just scratching my head trying to figure out why my experience ( poking around in a whole lot of 240s) differs from what is written.
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Hey Mr. Bulletproof.
I think we're talking about the same wiring diagram, which helped me solve my puzzle.
Any idea why a wiring flub would take days to cause problems?
Thanks
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1990 740 Turbo, on its way to stock specs, maybe beyond
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None whatever.
My first thought was coincidence.
I was wondering, though, when you had the red-white wire connected, did the tach work?
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'80 DL 2 door, '89 DL Wagon
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Hmmmmm! Now there's an interesting question. I'm 99% sure it DID work! I drove it about 200 miles and I'm pretty sure I looked at the tach, always wishing it would be lower (the M46 overdrive needs a rebuild, so I kept it at or below 70mph).
I could hook it back up and see what happens ;) When people replace the wiring harness, do they normally replace the wiring to the tach? Maybe the PO used a harness from something that had a black wire for the tach.
I think it's strange that the car drove fine until I stalled it. Or maybe it just happened to die when I was taking off from a stop-sign.
I don't think the black wire would have moved and suddenly grounded under the dash. If it had, I think I would have had some melted wiring.
And I'll agree with you about being lucky to have single-owner cars! Both my volvos have had numerous owners. At least 3 apiece before they came to me. The 740T I have has an engine from an unknown year, and EGR and computer from 92, and an AW-70 instead of AW-71. It also had a confounding short in the passengers' side running lights, which I finally fixed by running a single wire all the way back to the lights. And now I have a permanently on bulb-out indicator. Sometimes it does change behaviour, such as blinking with a bulb with my foot on the brakes, while I'm in reverse... Wiring is SO FUN isn't it?! Hahahaa. :D
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1990 740 Turbo, on its way to stock specs, maybe beyond
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