https://www.ma-diagnostics.com/

M.A Diagnostics, Glasgow (2026)

17/10/2026

🚗VW Golf , 2023

📢Guys..how often do you hear a customer say 'its maybe time to change this car"? , it's usually after they've spent a Tonne of cash in repairing the thing!
I actually don't believe that's the best way to go because these newer cars are also painful to own at times aswel.
They fail more often and parts are more expensive

This 2023 MY vehicle came in with no Screen working, it also controls the HVAC system so it's not like you can ignore it or anything. The 5F infotainment system was a No Communication,
The part was £2200 Plus Diagnosis, fitting and programming.

Put that in your pipe and smoke it 😉

16/10/2026

🚗 Two Recent jobs in the workshop this last week

🟣Audi A3 convertible
Retrofit Cruise control for a very patient customer, this kit was on order for weeks before it eventually arrived. As part of his job he travelled down to England quite often so was keen to get the Cruise control fitted. Unfortunately on the day we installed the kit he no longer works at that workplace and doesn't now have a need for the cruise. Very unfortunate 🤨.
Thanks to A1 Remote Diagnostics for taking care of the coding for this one they made light work of the task as usual.

🔵BMW 3 Series
I'm partial to a B.M myself and quite like these things.
Recently this one got a new windscreen but the windscreen company couldn't calibrate the KAFAS which is the windscreen Camera due to a no communication scenario.
I got the car in and started checking Power, Ground network at the KAFAS, I found a missing power..I had already checked the fuses in the fuse boxes but unfortunately I missed a fuse box on the drivers side of the car which had a blown 5Amp fuse. Thanks to my Friend Alex for letting me know where to find that fuse it's much appreciated.
Needless to say the fuse was the cause of the no communication, not sure why the fuse blew but it must have been relating to the windscreen as it only happened when the windscreen broke.

15/10/2026

Mercedes C Class , 2017 Blue Tec

Vehicle will will go into 'N' when selecting ' D'

Guys DDTSB has a brilliant document on this issue and I was looking for some advice. Can we repair this one ourselves, I'll be working with another local garage on this one

One of the issues we may come across is the FSB4 system programming and the need for a SERMI Qualification which I don't have so can I solder pressure sensors onto this Mechatronic, can I perhaps clone a new board or donor? I have Obdstar and multiprog

13/10/2026

🚗 VW Golf MK6

🚗 Intermittent non start, issue started after a sunroof water ingress 💦🌊

🚗 No Comms with a few modules. Gateway sits high up behind the dash. Eyes 👀 for the win

13/10/2026

🟦 VW Polo, 3 Cylinder Petrol

🟦 Engine poor running,

🟦 It's nice to get a misfire diagnosis where I can pull out the Oscilloscope and get geeky 🤓. Plugs coil packs all replaced (Standard)

🟦 The Engine would run quite poorly for a couple of minutes and then it would get a whole lot worse, it was a mechanic compression loss when running..that's all they wanted to know so we stopped the diag there!

Cylinder 3 was counting misfires right from start up, I connected the oscilloscope to cylinder 3 coil pack and captured secondary ignition and the injector on cylinder 3, after about 300 Misfire counts the injector was Turned off by the ECU, this is to prevent damage to the cylinder by cylinder wash.

A relative compression test revealed NO low cylinders and the cadence of the engine sounded even so now I need to find out why the engine computer is counting Misfires and turning the injector off which actually makes the engine run worse as there is now no combustion contribution from cylinder 3

🟦 Pico for the win.
A relative compression test shows static compression with no combustion occurring inside the cylinder so to capture a low contributing cylinder I had to monitor the crank signal and add a math channel..let me explain

If we capture the crank signal there is loads of repeating lines up and down which represent each crankshaft tooth, it looks even with your eye but there will be slow and fast points within that signal, this will be determined by the expansion stroke (power stroke) from each cylinder . If we add a math channel to that signal the software will plot the frequency (speed) of the whole crank signal.
This is displayed as an analog signal which makes it easy to see the speed of the engine .by adding a cylinder sync we can see that cylinder 3 is not accelerating the crank shaft the same as cylinder 1 and 2 . There is some contribution from cylinder 3 which is why as the crankshaft Decelerated it stops the speed dipping down low.

🟦 The piston chart shows the stage and position of each cylinder across the whole 720° of crank rotation . The red box is power stroke. If you look you can see the crank accelerate on power stroke of 1and 2

Cheers 🍻

11/10/2026

🍻 Tool for sale 🍻

👌snap-On solus Plus on Software 24.4

🔴 I've owned this for approx 1 year and never used it. I was thinking I would do more mobile work than I have and I was keeping it in my van for emergencies.

It's actually in mint condition and the software is quite recent. I have Topdon stuff as you know so this isn't needed.

🔴It will be on marketplace tomorrow and then eBay .

Cheers 🍻

£700

11/10/2026

🔵 Both Mechatronic Units returned from ECU Testing and are now fitted to the car. Both are repaired correctly and the cars are back to the customers.

🔵 Recently ECU Testing have been taking a bit of a slaughtering in the comments of my posts so it's only fair we praise them when they are successful.

My experience with ECU Testing has been positive although I haven't dealt with them a whole lot.
The process of creating the repair order on their website to printing the postage label and then it being collected and returned is very easy. When talking to them on the phone the come across professional so I just wanted to put that out there.

🔵 That being said..next time I will repair the pressure sensors myself given the repair cost 💰🐵

Cheers 🍻

10/10/2026

🚗 BMW 1Series

🚗SRS light on dash (Failed MOT)

🚗The Drivers seat belt stalk had a fault stored which looked to be the reason for the SRS light on the dash. We attempted to investigate the fault and fix the buckle but we could not!

🚗 New stalk from BMW and the owner now has an MOT pass 👍

08/10/2026

Ford Puma

🧐 customer complaint of Alarm going off in the middle of the night

🧐 The last 4 Alarm activations were caused by the Bonnet latch. One of the terminals looked slightly crusty and with the temperature dropping at night I was thinking the resistance of the micro switch was just drifting out of range. We put a bonnet latch on.

🧐 TPMS issue.
It was a faulty NSR TPMS sensor, I was mighty impressed with the Xhorse MIDI. It's prodominantly a key programming tool but also has a TPMS function built in. I was super impressed. And the screen is just the right size. The little wand makes is cool although I'm not used to a little wand 😆

I enjoyed this one

07/10/2026

🚗Dacia Sandero. 3 cylinder Petrol

🚗Engine management light on dash.

🚗 This vehicle had been to more than 1 garage for diagnosis, the codes had been cleared previously and the light returns quickly after a code clear!
No one has managed to figure out the underlying cause. There was an Autel print off left on the seat for me incase it was helpful.

I'm not sure if the fault description from the Autel report maybe threw off the previous garages but the Topdon was pretty accurate.

🚗After a smoke test and a road test I went looking at the turbo for signs of anything that would cause an under boost. I found the actuator link rod fallen off

🐒 🐵

M.A Diagnostics

17/10/2026

16/10/2026

15/10/2026

13/10/2026

13/10/2026

11/10/2026

11/10/2026

10/10/2026

08/10/2026

07/10/2026

Address

Website

Alerts

Shortcuts

Share

Category

Listing takedown request