Mark Lemay, Author at Autosphere

Posts by Mark Lemay

Mark Lemay

38 posts

Mark Lemay is President of Auto Aide Technical Services. You can reach him at: [email protected] Mark Lemay est le président de Auto Aide Technical Services. Vous pouvez le joindre à l’adresse suivante : [email protected]

Low Charge Transit

Voltage issues led to investigation of the generator circuits We recently had the opportunity to do a diagnosis on a 2017 Ford Transit equipped with the…

March 11, 2026

Highlander Hybrid Woes

We had the opportunity to look at a 2021 Toyota Highlander Hybrid for a no start, gasoline engine will not run, and the vehicle will not…

November 24, 2025

Mystery Mazda6

Did you ever get involved with diagnostics on a car that you wish you had never taken on. Just kidding, I know we have all been…

September 23, 2025

Stubborn RAV4 Didn’t Want to Quit

We had an interesting case about a month ago. I received a call from a shop that had a 2013 Toyota RAV4 with a 2.5-litre engine…

July 31, 2025

Uneven Air Flow

Mark Lemay, President, Auto Aide Technical Services. Credit: Mark Lemay2019 Jeep Grand Cherokee. Credit: Stellantis(Fig 1) Using a pressure transducer indicated that every other intake pull…

April 30, 2025

Unusual Battery Drain

Ram pickup shows one issue that is in fact multiple faults. This was an unusual case of a vehicle with multiple problems presenting as a single…

January 7, 2025

Dodge Draw Down

Grand Caravan suffers from puzzling battery drain after liftgate repair. A 2012 Dodge Grand Caravan gave us fits after what should have been a simple repair.…

August 26, 2024

EVs: Not Ready for Prime Time

Mark’s experience with a Tesla Model 3 suggests EVs are still not as practical as ICE or hybrid vehicles. I have been thinking about this for…

November 29, 2023

Low Power Prius

Intermittent starting issue and sluggish throttle response warranted further investigation. 2012 Toyota Prius C. Photo Toyota We recently had the challenge of diagnosing a 2012 Toyota…

May 31, 2023

Fixing a Hobbled HVAC System

In this case, understanding how the system operates was key to solving the issue. A 2018 Toyota Sienna minivan was brought to us with the customer…

January 24, 2023

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Posts by Mark Lemay

Low Charge Transit

Highlander Hybrid Woes

Mystery Mazda6

Stubborn RAV4 Didn’t Want to Quit

Uneven Air Flow

Unusual Battery Drain

Dodge Draw Down

EVs: Not Ready for Prime Time

Low Power Prius

Fixing a Hobbled HVAC System

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