I recently had my CEE message appear, on my 98 E300TD, as we know it will when a glowplug fails. I know from testing the plugs that I need to replace #6 and probably the glowplug relay (since I have GP failures every 30-40k mi).

I had a transmission mechanic tell me that as long as the CEE light is on that it'll prevent my transmission from "learning" properly, and also affects how the injection pump injects fuel.

Not knowing enough about how the computers work on the newer 98-99 diesel 300s I was hoping someone could help me prove/disprove this statement.

I'm not really relishing pulling the manifold to change the GPs again, and since I live in S FL and never drive north, having one GP out doesn't affect starting. What am I overlooking?

 

I thought I had mentioned that I had an OBD check and it confirmed a bad glowplug.

What I am trying to determine is : As long as I'm getting this CEE error, does that mean that the other systems (transmission, injector) will not be working properly?