Quote:
Originally Posted by VolvoRob38
C30 1.6D 2009
Reduced Engine Performance issue.
Vida says - ECM 6620 Glow relay control - faulty signal
Im thinking of first changing the glow plugs to see if that sorts it, because easier/cheaper.
Just wondering if Vida would show a fault if specifically with one of the glow plugs? If it would then I guess not much point in replacing them.
Thanks
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The glow plugs should only be used for cold starting, not for running. As such if you have a performance problem, there's something else not right somewhere.
Do you have a cold start problem? If so, investigate the glow plugs individually but double-check what voltage they operate on, for some strange reason cars after 2000 (in general) have some strange voltage glow plugs so don't use full battery voltage until you know they can take it.
First port of call with any fault is to read the codes (which you've done), clear them and then drive it and check the codes again. You can never know if it's a historical code that has suddenly caused you a problem.