25/09/2026
More scope waveforms for the geeks out there š§
Today we had a Ford Ranger in limp home mode due to two faults and one was indicating 3 faulty glow plugs.
To remove and bench test 5 glow plugs would cost the customer several hoursā labourā¦ā¦ā¦..Letās scope emāļø
Wave forms are of a good glow plug and the bad ones.
The first photo shows the bad one. Blue signal showing NO CURRENT FLOW but has good voltage (yellow) signal.
Good injector has good Current Flow (blue) and good voltage (yellow)
Diagnosed first time with clear evidence of a faulty electrical part. No Guesswork, No ifs and buts. No wasted money replacing parts that donāt need replacing. Guaranteed š
If you want to see more scope goodness then comment below and we will post more when they come in. Thanks everyone, have a good weekend ā¤ļø