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  #1  
Old 10-06-2003, 01:04 PM
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Join Date: Oct 2003
Posts: 6
190 temp gage

I've got a 87 190 (8V) with an 84 motor (suprise after purchase......lucky me). The temp gage has never worked (along with the odometer and low oil light staying on). A local shop swapped out the gage set and got nothing on the temp gage. Any thoughts on troubleshooting here?

(I don't want to overcook the motor I had to rebuild three weeks after purchase......no I'm not bitter). I try to keep up with the quirks of this car....gets me where I'm going. Or like the local Austrian mechanic told me "Dry it til de veels fall of".
:p
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  #2  
Old 10-06-2003, 09:08 PM
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Join Date: Mar 2003
Location: New Hampshire
Posts: 158
on my 88 190e the oil level sensor is just above the oil drain plug on the pan. But looking through my performanceproducts mag, I dont see one listed for an 84 engine. so maybe the wire was never plugged in, if there is no where for it to go. The odometer may be jammed, as this is the case on my car. I havent gotten around to getting mine fixed or finding a replacement. And as for the temperature sensor, maybe the wiring differences between the harness from the 87 and the sensors on the 84 are not matched correctly, again this goes back to the oil level sensor issue. Hope this helps a little.
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  #3  
Old 10-07-2003, 03:30 AM
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Location: San Francisco, CA
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If your speedo works but the Odo doesn't AND it seems that the right side of the numbers is slightly caved in, the gear on the shaft has moved off.

I just did this repair and it is actually quite easy after you remove the instrument cluster.

Take the speedo out of the cluster, on one side you'll see where there are two white plastic gears. Push the gear (the one that turns the odo numbers) back towards the center of the odo.

The trick to keeping it working is to cement or some how keep the gear from walking again. I used a very small and fine file to rough up the shaft that the gear is on to clean and rough up the surface and then applied some epoxy. Still working well.

Remember, it is always easier to pull the instrument cluster after disconnecting the speedo cable at the trans.

Haasman
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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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  #4  
Old 10-07-2003, 10:15 AM
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Join Date: Mar 2003
Location: New Hampshire
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good news Haasman, thanks for the info, i'm going to try that. So the key is to glob a little epoxy at the end of that shaft to hold the gear from sliding out again?
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  #5  
Old 10-07-2003, 01:27 PM
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Yes, in essence, that is correct, but also to be sure the shaft is clean of any oil and is roughed up a bit for the epoxy to hold on to.

Haasman
__________________
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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  #6  
Old 10-07-2003, 03:49 PM
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Join Date: Sep 2003
Location: Leicester UK
Posts: 39
On my 91 1.8 the temperature sender is part of the temperature controlled switch which turns the fan clutch on and off. 2 of the pins turn the fan on when shorted and the one thats on its own is the temp sender.

Mine is a 3 pin unit and I think earlier ones have just the one or two pins. Anyway the temp gauge shows min when its not connected to anything and max when shorted to earth.
On my car the sensors are at the top of the engine block at the very front and to the right if looking at the front of the car. There are 3 or 4 holes which each may hold a sensor or be empty (with a bolt to fill them) depending on model.
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  #7  
Old 10-07-2003, 04:05 PM
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Join Date: Oct 2003
Posts: 6
thanks

Thanks guys.... The odometer fix sounds pretty simple. Looks like I'll have to break out my test light and multi-meter to see what's going on with the damn temp gage.

There's too many friggin sensors and bs on this car.....what the heck were they thinking......like the 2 stage 100/110 thermostat deal or the lame electromagnetic fan (that never caught on with other manufacturers did it....)....sorry I had to vent a little.
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