Having some 603 problems ('87 SDL) - Page 3 - PeachParts Mercedes-Benz Forum

Brian Carlton · #31 01-03-2008, 04:14 PM

Quote:

Originally Posted by Hatterasguy

Yeah at $60 its wicked expensive to make your car start so you can get to work. They last like 20 years thats just so expensive.

How do you explain the GP's that pass the meter test yet have nice cool black tips when you hook them up to a battery. I just yanked all 6 out of the SDL and two wouldn't glow red unless you left them hooked up for like a minute, so thats why she was starting rough... 4 year old Bosch plugs to.

Yeah........you're probably right. The '86 SDL has the same problem.

But, some folks like to save some coin when they can.................

oilslick · #32 01-03-2008, 04:23 PM

Quote:

Originally Posted by Brian Carlton

The probe should be inserted into the sockets of the plug after you remove the plug from the glow plug relay.

That's what I am doing. I am inserting the probe into those six sockets of the plug itself. Each "socket" has a number on the black plastic surrounding it.

It is a DM= Digital Multimeter and I had it set on 200 when I got the reading 0.08.

Oh well... we'll see how it goes again. Thanks folks!

Kevin

probear · #33 01-03-2008, 05:36 PM

Quote:

Originally Posted by Brian Carlton

Yeah........you're probably right. The '86 SDL has the same problem.

But, some folks like to save some coin when they can.................

Maybe....but it sure didn't work for me

Replaced the #1 and within a day, a couple of others crapped out. I had read somewhere in here that usually, you replace one, and other start to fail. I don't know whether it's coincidence or not, but it did.
The fuse strip was next to crack only a few weeks later.

Since then, good to go.

Brian Carlton · #34 01-03-2008, 05:56 PM

Quote:

Originally Posted by oilslick

That's what I am doing. I am inserting the probe into those six sockets of the plug itself. Each "socket" has a number on the black plastic surrounding it.

It is a DM= Digital Multimeter and I had it set on 200 when I got the reading 0.08.

Oh well... we'll see how it goes again. Thanks folks!

Kevin

Yep, you're doing it correctly. But, apparently, that digital meter cannot function accurately when you attempt to read 1 ohm on a 200 ohm scale.

probear · #35 01-03-2008, 06:59 PM

OK..I checked out the meter you have and the 200 Ohm scale should work. Its resolution will go down to 0.1 Ohm with an accuracy of 1.50%. Apparently, it's similar to my meter with auto-ranging.

BTW, what symbols are also present? It should have the Ohm sign and possibly a large or small 'm'.

Brian Carlton · #36 01-03-2008, 07:02 PM

Quote:

Originally Posted by probear

OK..I checked out the meter you have and the 200 Ohm scale should work. Its resolution will go down to 0.1 Ohm with an accuracy of 1.50%. Apparently, it's similar to my meter with auto-ranging.

BTW, what symbols are also present? It should have the Ohm sign and possibly a large or small 'm'.

Why is he reading .07 or .08????

probear · #37 01-03-2008, 07:44 PM

I don't know. That's why I want to know any other signs on the display. Unfortunately, the Sperry site does not have a picture of the unit with the display lit. My unit has 3 ranges m(OHM symbol), OHM symbol, and M(Ohm symbol). I checked an old plug that I had and it was 2.4 out of the car.
Maybe he can get a picture of the display.

#38 01-03-2008, 10:38 PM

Quote:

Originally Posted by Brian Carlton

Why is he reading .07 or .08????

Is it possible he is misreading 0.7 as .07 somehow?

Brian Carlton · #39 01-03-2008, 10:43 PM

Quote:

Originally Posted by Craig

Is it possible he is misreading 0.7 as .07 somehow?

............I suppose........misplaced decimal point..........???

#40 01-03-2008, 10:45 PM

Quote:

Originally Posted by Brian Carlton

............I suppose........misplaced decimal point..........???

It just seems unlikely that a meter on the 200 ohm scale would even see 0.07. Seeing a photo of the meter reading would help.

oilslick · #41 01-04-2008, 08:11 AM

Mistakes on my part are always a possibility. I will be out of my office and away from my laptop most of the day but I will post again later this evening.

I don't think I was reading it wrong. Admittedly I don't know anything about electrical thingamabobs but I did well in reading class when I was in school.

Kevin

oilslick · #42 01-04-2008, 08:52 PM

Didn't get to try anything on the SDL today but I posted some pics of some sun visors in the parts forum. Both L and R have the vanity mirrors still intact with doors.

Kevin

a2t · #43 01-06-2008, 12:07 AM

to further the hijacking...i need the drivers side visor if its palomino.

pi2060@yahoo.com

thx

Jeremy5848 · #44 01-06-2008, 02:15 AM

Quote:

Originally Posted by Brian Carlton

The probe should be inserted into the sockets of the plug after you remove the plug from the glow plug relay.

May one safely assume that the pin numbers on the plug correspond to the glow plugs, e.g., pin #1 is glow plug #1?

BTW, for those of us with a collection of test leads, a banana plug is a perfect fit in MB plugs such as the one for the cable to the glow plugs.

The pictures show the 6-pin plug with its pins numbered 1 through 5, pin 6 not numbered (from my '96 E300D -- M606 engine), a reading of almost 70 ohms on pin #1 (glowplug #1? bad), and a reading of 0.4 ohm on pin #2 (glowplug #2? good). The other pins also measured 0.4 to 0.6 ohms.

So I have a glowplug on order and yes, given the work involved with pulling the intake manifold, I probably should replace all 6.

Jeremy

Brian Carlton · #45 01-06-2008, 09:47 AM

Quote:

Originally Posted by Jeremy5848

May one safely assume that the pin numbers on the plug correspond to the glow plugs, e.g., pin #1 is glow plug #1?

BTW, for those of us with a collection of test leads, a banana plug is a perfect fit in MB plugs such as the one for the cable to the glow plugs.

The pictures show the 6-pin plug with its pins numbered 1 through 5, pin 6 not numbered (from my '96 E300D -- M606 engine), a reading of almost 70 ohms on pin #1 (glowplug #1? bad), and a reading of 0.4 ohm on pin #2 (glowplug #2? good). The other pins also measured 0.4 to 0.6 ohms.

So I have a glowplug on order and yes, given the work involved with pulling the intake manifold, I probably should replace all 6.

Jeremy

Yep, the numbers correspond to the cylinder numbers...........1 is in the front.

BTW, those are "sockets" in the plug..........not "pins". The pins are in the relay.

#1 is bad and the others are fine.

If you are replacing #2-#6, I'd be curious to see how they glow outside the engine as compared to a new hot plug. It's been stated that the old plugs don't do well..........despite a good ohm reading. If you can glow one or two of them..........without burning yourself...........it would be of interest to see if you get a dull red glow............or a white hot glow.