Well I was able to change glow plugs 1 and 5 with some old spares from my dad's 240D without taking off the intake manifold and the car starts up fine now. I have ordered the intake manifold gasket and am going to go ahead and get the injectors done and wait on full glow plug service until later. But that does bring the question: There are 3 temp sensors on the engine, a 1 pin one by the thermostat housing, a 3 pin on the head and 2 pin next to it, are any of those what you are referring to Sixto?

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.