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#1
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WHAT? My oil light is on? WHY
As I’m driving to work this morning my OIL LIGHT comes on, it takes my brain a full 2 seconds to freak out and turn the car off and drop it into neutral. I was going UP a hill and then coasted down the hill, down the exit ramp, and down the feeder and next to a shell station. At least god takes care of me sometimes. I really shouldn’t complain. So I get out pop the hood and check the oil it’s at the ½ mark. Just like I always put it not too high, not to low just right, so I check it again. SAME. Damn, I must be going crazy, and I’m to young to go crazy.
So I start the car back up again, and all the lights go off but the oil light, then after about 4 seconds it goes off. I let the car idle and pull it slowly into the parking lot. (Yes, I was still on the feeder, with cars racing by like they are in NASCAR. I let it idle for about 3 minutes and then turn it off, and back on again. NO LIGHT. So then off I drive the rest of the 10 miles at about 30mph (traffic) to work without a problem. I changed the oil about 2 months ago with AMSOIL, and a standard MANN filter. At the end of the month, I’ll be dropping in another MANN FILTER like I always do and I’ve been using Amsoil for years. I’m freaking out. I mean I can drive my truck around, but please it’s not a MB. I changed out the timing chain about 9 months ago. Could my oil pump be going out, could it be a bad fuse? I did change over my fuses to the correct MB cooper fuses about a week ago. But that can’t be it. I haven’t had any issues at all with fuses. Going crazy and scared to drive my car any help would be great. Thanks Michael
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Professional greasecar installer Austin TX 98 Jetta TDI with grease car kit + veg-therm (totaled) 87 MB 300SDL running on B99 / greasecar kit + 30 fphe www.austingreaseguys.com |
#2
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Any knocking from the engine?
Does your car have a working oil pressure guage? Could be a bad pressure sender as well.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K |
#3
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If its the SDL the light is a low oil level indicator not low pressure. Check your oil level. My SDL oil light will come on once in a blue moon just to give me a wake up call (heart attack). But I have never found an issue with oil level or pressure. Just an old car hick-up
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BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o) |
#4
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I think those level lights are flakey. also, you were going uphill, perhaps the oil was off the sensor long enough to trip the light.
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#5
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The oil level at 1/2 and transversing hills. Sounds like the sensor worked as advertised.
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92 300D 2.5L OM602 OBK #59 |
#6
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Don't worry about it.
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1985 500SL Euro w/ AMG bits 130k 1984 300SD Turbodiesel 192k 1980 240D Stick China 188k 2001 CLK55 AMG 101k 2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!! |
#7
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The oil level float switch does fail occasionally. I've replaced a couple of them. They are about $40 and you have to drain the oil pan so do the job during an oil change. The float switch is on the left side of the oil pan and is secured by two screws. Make sure you replace the o-ring seal also.
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#8
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Quote:
This happens to my 190E as well.
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg |
#9
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It is an interesting wake up call when it happens.
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BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o) |
#10
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Okay, that keeps my mind in check. So I need to change out the float switch that is located on the left side of the engine and has two bolts holding it on. I can totally do that.
My pressure gauge was and is working just fine and the engine wasn't making any noise at all. I'm so glad that it's just a sensor that I need to replace. Off I go to find out how has this sensor switch.
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Professional greasecar installer Austin TX 98 Jetta TDI with grease car kit + veg-therm (totaled) 87 MB 300SDL running on B99 / greasecar kit + 30 fphe www.austingreaseguys.com |
#11
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You are the man. Thanks for the help everyone, I've found the part I need. I'll check to see if Phil has it, makes me feel dirty if I have to order from anyone else.
Here is what it looks like for the next person that has this issue. http://www.autopartsworld.com/results/?PN=4294895916&N=0&VN=4294967241+4294966748+4294965203+4294967247+4294967124&Nr=AND(universal:0) And Gasket http://www.autopartsworld.com/results/?PN=4294895914&N=0&VN=4294967241+4294966748+4294965203+4294967247+4294967124&Nr=AND(universal:0) Thanks again. Quote:
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Professional greasecar installer Austin TX 98 Jetta TDI with grease car kit + veg-therm (totaled) 87 MB 300SDL running on B99 / greasecar kit + 30 fphe www.austingreaseguys.com |
#12
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On my TD, when the oil level is 1/2 way between the high & low, if I brake hard or turn sharp to the left, the light comes on for a few seconds. When the level is close to the minimum mark it comes on more often. When it is at the full mark it never comes on. Makes me wonder about the rational about running the level 1/2 way between the 2 marks.
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Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort.... 1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles 1987 250td 160k miles English import 2001 jeep turbo diesel 130k miles 1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving |
#13
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That's a good point. I was thinking about that last night, so I added more amsoil to just right under the full mark. But then I start to worry if I'm adding to much oil. God there is something wrong with me. LOL
But really the oil level sensor is working correctly. I drop to work today and went up and down some over passes and the light never came on. Cheapest fix ever.
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Professional greasecar installer Austin TX 98 Jetta TDI with grease car kit + veg-therm (totaled) 87 MB 300SDL running on B99 / greasecar kit + 30 fphe www.austingreaseguys.com |
#14
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For a good while I've suspected that the half full argument is caused by a slow leak from the turbo drain tube where it hits the oil pan.
In my engine that I just installed in my SD, the oil was visible in the tube's attachment hole when the engine was sitting level in the garage, and at less than full on the dip stick. I'm guessing that a seal in less than perfect shape, combined with a higher oil level would promote the leaking of oil, down to wherever it balanced out. The half-full mark, possibly?
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-Josh Testing the cheap Mercedes axiom, one bolt at a time... |
#15
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I've been running my Mercedes engines at the full mark for almost 20years now, ... haven't had a consumption issue. Either it is pre-124, a myth, or something like Josh is postulating.
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Gone to the dark side - Jeff |
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