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Message: <blockquote data-quote="moots" data-source="post: 28211" data-attributes="member: 219"><p>well,i finally got to bypas the heater matrix from the cooling system.we don't need heaters and it is basically another component that can induce leaks as has happened to the e34 when the heater sprang leaks due to corrosion.the symptom is sweet smell(coolant) and flooding under the dash.basically this is the route the coolant travels:1. from the rear of the engine block2. goes to the heater aux motor pump/vlv assy(lh strut tower)3. branches out via 2 separate hoses going to heater matrix(inside cabin,hidden in the depths of the dash board)4. comes out from heater and back to the engine block(metal T pipe under inlet manifold).what i did,i connect the hose that comes from the rear of the engine block (A)and route it direct to the metal T pipe(B) under the inlet manifold.This metal T pipe was where the return hose from the heater is connected to.the pics shows hoses and rubber caps in the bypased condition.effectively the ihka ops shud not be affected by this operation as the coolant is controlled by the aux water pump and the heater valve when the temps selection is done on the ihka panel.</p></blockquote><p></p>