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Old November 2nd, 2006, 09:46 PM
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Tom More
1995 D90
Join Date: Apr 2004
Location: Littleton, CO
Posts: 104
Coolant leak?

95 d-90 with 300tdi...
Over the last two days I have noticed what smells like a strong coolant smell while driving. When I am parked in my garage I can still smell it but not nearly as strong. I am not seeing any leaks inside or out, I have left a piece of cardboard under the vehicle and inside on the floor and have not seen anything. The coolant level appears to be at the right level.

Any suggestions?

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Old November 2nd, 2006, 10:05 PM
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Jeffrey Rosbrugh
95 D90 ST #2585
Join Date: Sep 2003
Location: Wrightsville Beach, NC
Posts: 102
Is the smell coming from inside the vehicle or outside? Are you running heat?
I don't know squat about specifics of the TDI, but have had similar issue where the pressure from heat (PV=nRT) put off into the coolant will push a small trace of coolant that boils off. Ocasionally so small of a trickle it never drips on the ground, especially if it has to run across a hot engine surface so it ends up just boiling off. I would poke around and sniff around and look for somewhere shiny, in particular around hose fittings/end and mating surfaces. If you are smelling it inside, perhaps the heater core is leaking slightly. Just my 2 pennies.

Pain is weakness leaving the body
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Old November 3rd, 2006, 12:31 AM
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Neil Steinhagen
1986 Tithonus LHD
Join Date: Apr 2006
Location: Periscope Depth
Posts: 635
Just to echo what Jeff said, (along with owning a V8) I had a smell of coolant too. No drips, puddles, etc. The telltale was when I would put it to defrost, it would fog up even more. I went for the heater core. After it was replaced, problem fixed. I believe the heater assembly is the same for both engine types. Word of advice if you do go for the core, don't buy the part from Atlantic British. I don't think it's LR Genuine (Britpart?) and required really boogering up the heater box assembly to fit it (cutting, grinding, repainting) and the inlet/outlet hose fitings were so close together that I had to soap up the coolant hoses to fit them. This time it would pay to go Genuine.

Once I got the assembly out I expected to see a leak trail or something...not a thing. Even inside the assembly on the core, not a trace.

Good luck.
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