Ben Johnson Archives - Professional Motor Mechanic

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What was wrong with the BMW F25’s cooling fan?

|Date: October 24, 2024

What was wrong with the BMW F25’s cooling fan?

PMM’s hot-wired fixer Ben Johnson has his dreams of exacting a full and comprehensive repair scuppered on ...

PMM’s hot-wired fixer Ben Johnson has his dreams of exacting a full and comprehensive repair scuppered once again by a member of the Finnish BMW-owning public. After another week of repairing yet agai ...

October 24, 2024
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What was wrong with the BMW N20’s engine?

|Date: August 28, 2024

What was wrong with the BMW N20’s engine?

PMM ’s troubled troubleshooter Ben Johnson stumbles through numerous fault codes and takes a look at fixi ...

PMM ’s troubled troubleshooter Ben Johnson stumbles through numerous fault codes and takes a look at fixing a BMW N20 that staggered its way into his workshop. It’s a rarity these days, a genuine anom ...

August 28, 2024
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What was wrong with the 2001 BMW M5?

|Date: July 30, 2024

What was wrong with the 2001 BMW M5?

PMM ’s disgruntled man in Finland gets under the bonnet of a BMW M5 which had been around the houses and ...

PMM ’s disgruntled man in Finland gets under the bonnet of a BMW M5 which had been around the houses and under the arches. Ah, the infuriating encounters we car mechanics endure. A situation so dishea ...

July 30, 2024
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Why was the BMW M70 engine facing issues?

|Date: July 01, 2024

Why was the BMW M70 engine facing issues?

Ben Johnson investigates another “classic” BMW with engine running woes. Ah, the delightful symphony of a ...

Ben Johnson investigates another “classic” BMW with engine running woes. Ah, the delightful symphony of an M70 engine’s running faults! It seems the universe has bestowed upon me a generous dose of th ...

July 01, 2024
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Why was the BMW 635 not starting?

|Date: May 28, 2024

Why was the BMW 635 not starting?

PMM’s diagnostic dynamo Ben Johnson breaks out the Pearl Jam tapes and indulges in a gleaming BMW 635 in ...

PMM’s diagnostic dynamo Ben Johnson breaks out the Pearl Jam tapes and indulges in a gleaming BMW 635 in its twilight years. As I dramatically skidded into the Schmiedmann car park last month, battlin ...

May 28, 2024
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What was prompting the BMW E90’s fault codes?

|Date: March 05, 2024

What was prompting the BMW E90’s fault codes?

BMW diagnostics specialist Ben Johnson uncovers the layers of intrigue and mystery set upon a sorry E90 b ...

BMW diagnostics specialist Ben Johnson uncovers the layers of intrigue and mystery set upon a sorry E90 by the previous garage to discover the root cause of the valvetronic’s woes. The tingling sensat ...

March 05, 2024
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How can using an oscilloscope help diagnostics?

|Date: February 02, 2024

How can using an oscilloscope help diagnostics?

Ben Johnson investigates how using an oscilloscope along with verified data can help you improve your dia ...

Ben Johnson investigates how using an oscilloscope along with verified data can help you improve your diagnostic efficiency. This month, I want to emphasise the significance of building your personal ...

February 02, 2024
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How to replace the transmission on a BMW i3 REX

|Date: January 05, 2024

How to replace the transmission on a BMW i3 REX

Ben Johnson tackles a tricky transmission replacement on a BMW i3 REX. I had always assumed the transmiss ...

Ben Johnson tackles a tricky transmission replacement on a BMW i3 REX. I had always assumed the transmission on the BMW i3 was bomb proof. That was, however, until an i3 94 REX was towed into our fron ...

January 05, 2024
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The 2023 PMM Awards

|Date: December 01, 2023

The 2023 PMM Awards

The PMM Awards have returned for 2023 and it's time to applaud the exceptional articles that earned the s ...

The PMM Awards have returned for 2023 and it's time to applaud the exceptional articles that earned the spotlight this year! Read on to find out who has won! Every month, the PMM team works tirelessly ...

December 01, 2023
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Why did the X5 40E start intermittently?

|Date: November 28, 2023

Why did the X5 40E start intermittently?

Ben Johnson is driven to his wits’ end by yet another BMW X5 40E in the workshop. This time, the car refu ...

Ben Johnson is driven to his wits’ end by yet another BMW X5 40E in the workshop. This time, the car refused to start, until it did start… meaning it wasn’t simply the fuse at fault. These days, the p ...

November 28, 2023
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