MercTek Farnham

29/02/2024

STOP! WAIT!! Don’t buy that £350+ Mass Airflow sensor - Guesswork is very expensive.
MAF errors are usually related to other problems and your MAF sensor is probably working just fine. Call or text us right now to potentially save you fortunes. 0775716055.

Mercedes repair and diagnostics. MAF, MAP and boost issues diagnosed using Xentry.
Adaptations etc

21/02/2024

010129 error GONE! We found 2 air leaks on this system, no harm in doing another leak test at the pre mixer inlet manifold before putting it all back together.
2012 Sprinter With DPF and MAF stored warnings. We saved the customer £1000’s from not having to purchase new Mass Airflow and DPF as suggested by several garages.
DPF regen will not reach efficient temperature with 0101 stored errors due to boost leaks. You MUST fix MAF issues AND perform Xentry adaptations after repair and before performing a forced regen.
The MAF live data graph was perfectly inline with pedal interactions so a new MAF sensor at £450+ vat seemed like a very excessive recommendation by others.

✅ Air leak 1: EGR bypass valve leaking.
✅ Air leak 2: EGR/Inlet Mixer cracked - probably previously tightened before EGR install, this causes stress on the plastic.
✅ Also cleaned out the oil that had accumulated near the leak - OIL is very normal here but this is excessive because the turbo is working so much harder due to the air leaks in the system.
✅ Xentry adaptations performed and stored errors cleared - Stored 0101 Mercedes errors will not clear with most ODB scanners.
✅ DPF regeneration - Soot content was at 210% - 2 forced regenerations later and it was down to 70% with 550 degrees DPF burn recorded while test driving.
Happy customer! Apparently he drove home and hit [censored] mph UP the hogs back and confidently said he’d never felt it drive with this much power.
A new DPF would've cost over £1500 with Mercedes because the CAT is merged with DPF on this model. 🙈🙈🙈