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#1
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87 300 SDL Warning lights
The battery light stays lit along with the low fuel light. Brake light is dim red and everything up to including low washer fluid are amber. Went to go home today and had to get a jump. Since I have been home, I have gone out and tried to start it and it started ith no problem. Also the fuel guage and speedometer work when they want to. Any ideas on whats going on?
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#2
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sounds like battery with a weak or dead cell
May I suggest you charge the battery up and then have it load tested.
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daw_two Germantown, TN Links: Sold last car --- 05/2012 1984 300D Light Ivory, Red interior Cluster Needles Paint New Old Stock (NOS) parts Past: 3/2008 1986 300SDL "Coda" 04/2010 1965 190D(c) "Ben" & many more |
#3
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When mine did something kind of like that, the alternator was shot.
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#4
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The battery is only 4/5 months old.
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#5
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Its probably the alternator not charging.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
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I charged the battery and now the damn car wants to idle rough. What the hell is going on now?
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#7
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Whats the output on the alternator?
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#8
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You need a regulator
Quote:
Order it on line, $29 bucks, be there by Wednesday, takes 2 minutes and a screw driver to install. http://www.importeccatalog.com/ PN# F401039368 its a BOSCH oem part.
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Mark ======== THE WHITE FLEET 2016 GLE300d 4-MATIC 38K BROWN! 2012 S350 Bluetec==94k WHITE 2007 ML320 CDI==166K WHITE (FOR SALE) Under new management: 2005 E320 CDI--140K--WHITE 1995 E300-Diesel-133.5K--THE CAR IS BLUE 1986 300SL--97.5K (European) AND WHITE. Back in Europe! 1991 190E 2.3-73K California Perfect.--WHITE 1995 E320-Wagon-159K--WHITE (recently scrapped) 1987 300D Turbo-213K--WHITE 1987 190D 2.5 Turbo-288K--WHITE |
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will this help the rough idle?
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#10
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Ya know, if the rectifier diodes in the alternator are breached, i.e., they're failed closed, you'll get all sorts of weird stuff--If you can disconnect the output lead from the alternator and pull the regulator connector off, charge the battery and all works fine, the diodes are shot and not the voltage regulator. (new alternator) Reattach the output line and if nothing changes, then new regulator.
The electrical side of the car likes 14.2 volts, strange behavior would result from an under-voltage or reverse polarity situation with a bad rectifier diode far as the ruff idle, there is the electric idle module on the back of the injection pump. The mechanical idle stop is below the electronic idle in any case and your engine might not like a 450 rpm's, hence the rough idle. I'd surely attack the charging system issue first and then the other system malfunctions second, considering they may all be resultant from the your system voltage below the desired 14.2 VDC
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Mark ======== THE WHITE FLEET 2016 GLE300d 4-MATIC 38K BROWN! 2012 S350 Bluetec==94k WHITE 2007 ML320 CDI==166K WHITE (FOR SALE) Under new management: 2005 E320 CDI--140K--WHITE 1995 E300-Diesel-133.5K--THE CAR IS BLUE 1986 300SL--97.5K (European) AND WHITE. Back in Europe! 1991 190E 2.3-73K California Perfect.--WHITE 1995 E320-Wagon-159K--WHITE (recently scrapped) 1987 300D Turbo-213K--WHITE 1987 190D 2.5 Turbo-288K--WHITE |
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Quote:
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#12
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Your engine's idle is controlled by the SLS system, which will act funny if you remove the battery, or if the charging system is messed up. A rough or in general crummy idle would result.
I still think your alternator is dieing.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#13
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So should I just replace the alternator or VR? Autozone has the BOSCH ALT. $200 plus core.
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#14
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http://www.importeccatalog.com/
Carquest is now owns worldpac, they are very competitive with every vender but importec
I'd still give the VR a shot, at $26 bucks, you'll have a spare. PART NUMBER SEARCH RESULTS WITH PRICES Vehicle 1986 Mercedes Benz 300SDL Part: Alternator Note: AL 65 X : 70 Amp. Some early versions now use this later model alternator. Installation of old pulley on new unit may require the removal of spacer on front shaft. No woodruff key is used. A 22mm wrench and a 8mm Allen wrench is used to torque nut to 70 + or - 5 Nm. Product Brand Availability Retail Our Price F4000-10137 Alternator 70amp - Remanufactured Bosch IN STOCK $182.05 Vehicle 1986 Mercedes Benz 300SDL Part: Voltage Regulator Product Brand Availability Retail Our Price F4010-39368 Voltage Regulator Bosch IN STOCK $29.40 F4010-108169 Voltage Regulator Germany IN STOCK $26.38
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Mark ======== THE WHITE FLEET 2016 GLE300d 4-MATIC 38K BROWN! 2012 S350 Bluetec==94k WHITE 2007 ML320 CDI==166K WHITE (FOR SALE) Under new management: 2005 E320 CDI--140K--WHITE 1995 E300-Diesel-133.5K--THE CAR IS BLUE 1986 300SL--97.5K (European) AND WHITE. Back in Europe! 1991 190E 2.3-73K California Perfect.--WHITE 1995 E320-Wagon-159K--WHITE (recently scrapped) 1987 300D Turbo-213K--WHITE 1987 190D 2.5 Turbo-288K--WHITE |
#15
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Quote:
I ended up buying mine from Fastlane. Check the alternator first, see what its charging, or have Autozone bench test it.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
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