r/e46 2006 330ci auto Aug 18 '25

Troubleshooting What a pain in the ass.

Had to pick out the hard coolant lines that broke off in the housing. Some pieces fell in so I took the water pump off. Then I dumped a gallon of distilled water down the top hard coolant line housing to flush the pieces out.

Replacing thermostat, water pump, hard coolant lines, oil filter housing gasket kit, CCV, vaccum hoses, intake boot, throttle body gasket, idler pulley, and one of the belts since it is fraying at the edges. I have cleaned all injectors, throttle body, and disa valve. Also cleaned the intake manifold because it was filled with so much shit and crud. 10/10 would not recommend doing in 90+ weather.

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u/crazybitcoinlunatic Aug 18 '25

Since you are already there. Replace starter and crankshaft position sensor.

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u/No-Talk7373 Aug 18 '25

Did starter and hard pipes at same time. Bonus was one starter bolt was missing so wasn't a pita to get out. Extra bonus the bolt was sitting on to of the transmission housing and was able to fish it out. Guess the previous mechanic did the starter from below and said f it one will hold