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  #16  
Old 03-26-2002, 12:09 AM
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Slydel,

If you don't tell us what type of GP (series or parallel) it is difficult to help you.

P E H

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  #17  
Old 03-26-2002, 01:46 AM
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Slydel,

I just replaced my relay about a month ago. Okay - I'll come clean - a pro mechanic did it. I replaced all my glowplugs and although the car started better, the dash light was still not coming on, so I thought I'd have a pro diagnose it. He found the relay was bad and since he did the trouble-shooting I had him replace the part. But I know where the part is. On the first photo you posted, you've removed the cover from a pair of relays. That cover is a square black box. The relay is located more to the front of the car, but is also on the wheel well. Your car's older than mine, so maybe you have a different set up. But you should be able to follow the wire from the plug at the front of the block over to the wheel well and the relay. The relay is much smaller than the cover you've removed in the first photo and is rectangular.
Hope this helps.
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  #18  
Old 03-26-2002, 08:33 AM
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I think there is a series/filament plug visible in the first photo he posted....Greg
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  #19  
Old 03-26-2002, 07:48 PM
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The 80A fuse on the firewall shows they are series plugs -- the fuse for the parallel plugs is under the relay cover.

Sounds more like both a bad relay and a shorted plug.

I'd check for a ground between the block the the connections on the plugs before taking them out. Remove the ground wire at the front plug, then the wires between the plugs. The filament is insulated from the block -- any connection between the block and wire connectors on a glowplug indicates a short on the series plugs.

Peter
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  #20  
Old 03-27-2002, 09:59 AM
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I'm not going to try to help anymore until Slydel answers my questions. I can't figure out the problem with out answers.

P E H
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  #21  
Old 04-06-2002, 11:39 AM
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Back on the car

Thanks for all the advice, I only just got back to the car after a trip to NJ.
To answer many of the suggestions.
The first wire just goes to the block, nowhere else.
I will check the wires from the fuse and try to see where they go, they disappear inside the cavern of the firewall, there is no relay in the engine compartment.
I think one of the plugs was grounded, I found some carbon deposits.
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  #22  
Old 04-06-2002, 12:18 PM
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Two Pics

OK,
I removed the windscreen wiper cover.
What is that curly wire thing? On the first photo.

On the next photo.

The wire from the 80A fuse that doesn't go to the GPs goes to that brownish spliter looking box. The wires from the back of that box dissappear into the wiper area on the photo and go to the wiper motor.
The wires that go to the Right in the photo (Towards the cable tie) team up with the harness that enters the car near the vacuum hoses. Do these wires go to the relay?
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Glow plugs, I'm going to cry.-mvc-171s.jpg  
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  #23  
Old 04-06-2002, 12:22 PM
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photo 2

photo 2
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Glow plugs, I'm going to cry.-mvc-170s.jpg  
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  #24  
Old 04-06-2002, 01:19 PM
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Slydel

The coils are the resistors for the blower motor.

The relay should be somwhere on the left fender. It has seven wires on it -- the brown one should connect to a ground in the immediate vicinity (probably under one bolt).

There is a engine temperature sensor on these systems -- brown with green stripe wire. If you can find the sensor and wire, you should be able to trace it back to the relay.

I suspect the carbon fouling was the problem.

If you have no current flow to the plugs, the dash lamp will not light.

Peter
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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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  #25  
Old 04-09-2002, 10:55 PM
brandoncrone
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Glo plug relay location

Hi, if you are still looking for the glo-plug relay location, I have a 79 and the relay is behind the instrument cluster. Remove the cluster, disconnect the speedo cable, electrical connector, and the oil pressure line. You will see two or three relays back there, one is for the rear defroster, one for the intermittent wipers, and the other is the glo-plug relay. It is the largest of the three. You may find if you disassemble it that the main relay or the board is shorted. Usually though, the relay just simply stopd functioning, not to the point of a major short. Which is what you have. I would disconnect the main B+ wire to the first glo-plug and with the fuse installed measure its resistance to ground (With the key off as well). If there is a very low resistance then you have a wiring or relay problem, if not then it is the glo-plugs.

Hope this helps!
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  #26  
Old 04-10-2002, 09:43 AM
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Slydel

BTW Really super pictures!
You can pull one of the GP out and hook it up again to test. Ground it to the engine and turn on the key. Should make quite a show.
My 80 and 81 box is on the drivers fender well near the headlight...should be easy to find...
That plug on the firewall shows five wires though, so I dunno...
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1981 300CD (Benzina)
1968 250 S (Gina) 266,000 miles!
1983 Alfa Romeo GTV6 (Guido)
1976 Jaguar XJS-saved a V-12 from the chevy curse, what a great engine!
1988 Cadillac Eldorado (better car than you might think!)
1988 Yamaha Venture (better than a Wing!)
1977 Suzuki GS750B
1976 Yamaha XS 650 (sold)
1991 Suzuki GSX1100G (Shafty Gixser)
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  #27  
Old 04-16-2002, 08:55 PM
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Join Date: Jun 2001
Location: Northern Calif. (Fairfield Area)
Posts: 2,225
Slydel.
REgarding chassis #. 123=123model 190=nonturbo touring diesel(wagon) 12=left hand drove automatic
007628=production # of your car.You have the early series style glow system. One goes out they all go out just like Christmas tree lights. I don't have my microfiche here but I'm quite sure your relay is under the driver's side dash. Since the system is series, I would lift the ground lead and the wire at the firewall. I would then check for a ground in the glow plugs.
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  #28  
Old 04-16-2002, 10:01 PM
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This is one of the most confusing posts I have ever seen , I thought I would share this with you all. I have read every ones response on this problem and it actually stressed me. No ones fault but man , confusing.
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  #29  
Old 04-16-2002, 10:41 PM
brandoncrone
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Autozen:

You are absolutely correct. It is on the drivers side of the dash, except it is behind the instrument cluster. Its easier to access once the instruments are removed.

Hopefully well get to the end of this.........

:-)

Brandon
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  #30  
Old 04-18-2002, 06:22 AM
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Brandon

That sounds like a tasty car! Wow! Are we gonna get to see this rare SE?

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Ed
1981 300CD (Benzina)
1968 250 S (Gina) 266,000 miles!
1983 Alfa Romeo GTV6 (Guido)
1976 Jaguar XJS-saved a V-12 from the chevy curse, what a great engine!
1988 Cadillac Eldorado (better car than you might think!)
1988 Yamaha Venture (better than a Wing!)
1977 Suzuki GS750B
1976 Yamaha XS 650 (sold)
1991 Suzuki GSX1100G (Shafty Gixser)
1981 Yamaha VX920RH (Euro "Virago")
Solex Moped
1975 Dodge P/U camper


"Time spent in the company of a cat, a beer, and this forum, is not time wasted!"
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