19/05/2026
Another reminder that diagnostics and experience matter more than guessing 🔧
For the last few months this workshop/camper van had been driving us mad, especially from cold starts. Pulling away from junctions, the revs would suddenly dip right down, nearly stalling, with the whole van shaking and juddering badly.
Naturally, the mind starts going to worst-case scenarios:
injectors, fuel pump, MAP sensor, MAF sensor, wiring loom issues… the list goes on.
The breakthrough only came once we started using our new diagnostic platform, allowing us to record live data during road tests. After carefully analysing the data, we spotted something interesting — the clutch pedal switch was randomly sticking on. No pattern, no temperature link, just completely sporadic. But every time it happened, the revs would drop dramatically and the drivability went terrible.
Fitted a new clutch switch, took it for a road test, and it now drives beautifully again — smooth and responsive, just like it should.
Modern vehicles don’t always make fault finding easy, but this is exactly why proper diagnostics are so important 👍
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