dot
Member
Evening All,
I’m working on my 92 300 TD and am a bit stuck.
All running fine and no history of electrical issues. Done my insurance so my son can drive it, but have had to have a black box fitted.
Fitter arrived and had trouble finding a spot so was talking to his mates on the phone for advice, but finally fitted it in the driver’s compartment, under the carpet near the transmission tunnel just in front of the seat, the forum won’t allow me to upload a picture.
Anyway, two days after the glow plug light flickered a couple of times before cold starting, and then stopped coming on at all when the key was turned on.
So I ran some checks centring around the glow plug relay. It had power in. I unplugged the six pin outlet plug and tested the resistance and continuity and found no issues. Readings range from 0.8 to 1.4 when set to 200 ohms. I’m assuming that’s acceptable. But when I checked each of the output from the relay when I turned on the ignition it gave me about 12.3v for around 30 seconds then reduced to 7.7v and then off which flummoxed me a bit. I had another relay, so I installed it and the glow plug light came on, engine started and so problem solved. But the following day the same thing happened.
So I’m a bit stuck. Is it too much of a coincidence that a bloke has placed this black box into the electrical system, or am I barking up the wrong tree. I’m really stuck and being quoted £100 for an auto electrical just to come and look is something I’m trying to avoid.
Thanks, Dot
I’m working on my 92 300 TD and am a bit stuck.
All running fine and no history of electrical issues. Done my insurance so my son can drive it, but have had to have a black box fitted.
Fitter arrived and had trouble finding a spot so was talking to his mates on the phone for advice, but finally fitted it in the driver’s compartment, under the carpet near the transmission tunnel just in front of the seat, the forum won’t allow me to upload a picture.
Anyway, two days after the glow plug light flickered a couple of times before cold starting, and then stopped coming on at all when the key was turned on.
So I ran some checks centring around the glow plug relay. It had power in. I unplugged the six pin outlet plug and tested the resistance and continuity and found no issues. Readings range from 0.8 to 1.4 when set to 200 ohms. I’m assuming that’s acceptable. But when I checked each of the output from the relay when I turned on the ignition it gave me about 12.3v for around 30 seconds then reduced to 7.7v and then off which flummoxed me a bit. I had another relay, so I installed it and the glow plug light came on, engine started and so problem solved. But the following day the same thing happened.
So I’m a bit stuck. Is it too much of a coincidence that a bloke has placed this black box into the electrical system, or am I barking up the wrong tree. I’m really stuck and being quoted £100 for an auto electrical just to come and look is something I’m trying to avoid.
Thanks, Dot
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