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#1
02-06-2007, 07:07 AM
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Glow plugs or bad fuel?
Old 240D has been great so far, down to -5F - always outdoors.
Currently parked in a very windy area, low temps. Had to crank about 30 seconds before she showed signs of life. Is it possible for the dash indicator light to behave normally with a glow plug, or relay issue? Would the fuel gel with low wind chills? (-25F) Water in the fuel? 
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#2
02-06-2007, 08:23 AM
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Wind chill would have no effect on things - the real temperature is what counts. I seem to recall that the glow plug light might not give you an indication if only one glow plug is bad on the 123 chassis.
Len
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#3
02-06-2007, 09:39 AM
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most likely, it's compression.
and yeah, wind chill has NO effect on anything but your skin. it's a weather term that lets you know how it feels to YOU. that said, a windy area will keep a vehicle from reaching full temp with a heater plugged in... John
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#4
02-06-2007, 11:22 AM
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Yes you can have one bad glow plug and the light works fine. It happens in my wagon once or twice a winter.
If my wagon started at all at -5 I would be really happy. Currently the wagon won't start below freezing unless block heater is plugged in. 
__________________
Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#5
02-06-2007, 12:47 PM
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It depends on the year. Earlier 123s (up to 1980?) have the glow plugs hooked up inline, newer models parallel. If one glow plug in that inline system is bad, the other ones won't work either. I don't know about the indicator light, though, but I think it won't work then. In newer models it doesn't matter if one glow plug is bad, the other ones will still work, as well as the indicator light, I believe. Of course, starting is getting harder or impossible the more glowplugs are out.
__________________
'99 S420, 155k '91 VW Vanagon GL, 150k '85 VW Vanagon GL, 120k '82 VW Westy, aircooled, 165k
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#6
02-06-2007, 01:36 PM
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What irks me is the day before.
Temps were similar (-5 to 0F) and it started within seconds, just like always. Only when I was forced to park in the wind did I have difficulties. Maybe a coincidence.
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#7
02-06-2007, 02:12 PM
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Quote:
What year is your car? How is the fuel? Did it gel? What condition are the filters in?
__________________
RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K 90 Dodge D250 5.9 Cummins/5 speed. 400K Gone and still missed...1982 w123 300D, 1991 w124 300D
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#8
02-06-2007, 03:05 PM
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wind chill
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__________________
'83 300D Turrrbo 295K miles  
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#9
02-06-2007, 03:07 PM
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Car is 1981 240D
No idea if it did or did not gel, it started after a bit of cranking and with a wind chill of 25 below I don't want to snoop around looking. Always use Power Service, 8 oz. /per 14 gallons Always use the same fueling station, quite a few trucks use also. Filters are fine.
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#10
02-06-2007, 03:38 PM
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Quote:
Cars, and anything else inanimate will only chill to the OAT and no lower. With that in mind, if the wind is blowing, they will get to OAT faster, but will not go lower than the ambient temperature. The effect on your water pipes is because the wind pushes the boundry layer of air away, or goes through the insulation quicker. Any wind will cool things off quicker, but no more than the temp of the air.
__________________
87 300SDL - 215K Miles !! 99 F-350CC Dually PSD - 190K 86 300SDL - 189K All on B-100
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#11
02-06-2007, 03:56 PM
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Why are there so many wind chill experts SOUTH of the Mason-Dixon line?
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#12
02-06-2007, 04:11 PM
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Quote:
if it's 33F outside and the windchill is 0F the pipes in your house will not freeze. if it's 0F outside and the windchill is -15 AND you have a drafty crawlspace, your waterpipes May freeze IF you have good insulation in the house, and the wind blows away the heat layer of air coming from the house. "windchill" is the term weather forcasters use to alert us how the air will feel on our bodies, based on how quickly heat will escape our insulating clothes, and our heat producing bodies. "wind" has a similar effect on other things, but only to the extent that heat is removed/ or temps will equalize to the actual ambient temp. if the motor is warmed up to 80C and it's -20 outside, but no wind, the motor may stay warm enough to start for 1 to 2 hours, if it is windy, ya gots maybe 30 minutes... due to the rate heat is removed from the motor/coolant, down to the temp ambient... just an old HVAC technition rambling about thermodynamics... John
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!! 1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#13
02-06-2007, 04:25 PM
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If it was a sudden change I would put my money on the glow plugs. It could alsobe the strip fuse, or relay.
__________________
Andrew '04 Jetta TDI Wagon '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#14
02-06-2007, 04:34 PM
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wind chill
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But anyway never ever ever never does windchill matter to cold sweather starting My 86 SDL's glow plug light works with one plug out too very aggravating Jimmy Jimmy JImmy how bout your thoughts on wind chill down der in Texas 
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commercial fisherman diesel in my blood in my boats trucks and Dear old Dad has had me drivin them since i got my first license in 1968 1986 300 SDL 427654 1999 Chevy Crew Cab Dually 225423 1986 300 SDL 287000 Dad's 1987 190 Turbo 158000 Mom's (my inheritance)
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#15
02-06-2007, 05:33 PM
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Quote:
__________________
RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 99 W210 E300 Turbo Diesel, chipped, DPF/Converter Delete. Still needs EGR Delete, 232K 90 Dodge D250 5.9 Cummins/5 speed. 400K Gone and still missed...1982 w123 300D, 1991 w124 300D
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