The Mercedes Benz EHA explained

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[@tonychavez2083]

Sooo many people had M102 and M103 drivability issues that were misdiagnosed because the average repair shops had no idea what the EHA was…

[@danielalmagro9649]

Magistral, como siempre. Gracias

[@salehfiras943]

Nice video ! You should do one on adjusting the fuel pressure regulators and the outcome of it on Ke-Jetronic.

[@svsalserenity4375]

Best classic Mercedes information out there !

[@mercedesclassicswithpierre1753]

We really appreciate you @svsalserenity4375 for viewing our videos and leaving a comment. I tried to read as many as I can and take your responses for consideration on future videos. Thomas Polk KZbin Creator.

[@svsalserenity4375]

I have worked on these cars since they were new and I use your videos to refresh my mind . I still love these old girls . I work for Mercedes and every thing after around 92 has given me pause .

[@geoffwalker1531]

Thanks!

[@gs98999]

What rpm should a m103 300se idle at in gear? Is just a tick over 500rpm too low in D? In N or Park it goes up to 650-700rpm.

[@njabuloshingange641]

Pierre. Im from South Africa. I need help sourcing an ignition control box for my 1991 W126 500SE.... they are hard to ckme by here please assist.

[@w123benzman]

Had a stumble on acceleration, and smelled fuel from the engine compartment... Pulled the air cleaner and found fuel around the EHA. Swapped it with the new O-Rings, and all issues disappeared! To bad the old ones are not rebuildable...

[@reinesjogren150]

Wow I is first ! Watching in Sweden.

[@TonyLiveTV]

It would be great to see you dial one of these things in. At least you’re not selling a special tool or access to members only instructions. You can buy these for just over $200. I have two that work perfectly. The original was replaced for the reasons you mentioned, but there was nothing wrong with it. Ultimately you should check your pressures before replacing parts. Testing will save you money and you get a better understanding of how it works.

[@Catharticscrapper]

I replaced this recently on my W126..definitely had the odor of gas in my cabin...& a major loss of gas mileage...it was leaking everywhere...& yep, it was spendy af to buy, but critical. Easy enough to replace & I was back on the road enjoying my ride.

[@benstone5038]

I have a 190E 2.3-16, it has: Refurbed Metering Head, fuel distributor, brand new ICV and a tested EHA, so why would it stall on deceleration? Its beating me. I have brand new dual fuel pumps and fuel accumulator to fit. Any info would be greatly appreciated :)

[@mercedesclassicswithpierre1753]

Hello, @benstone5038 and thank YOU so much for your question(s), we want to answer you as quickly as possible. By signing in our Patreon www.patreon.com/thomaspolk page and making a donation of $10 your are assured of a 24 hour email response from Pierre. If you are already a $10 member please mention along with your question.

[@OneManOnFire]

Just to clarify when you turn the adjustment screw on the EHA you turn it clockwise?

[@christophermarshall5765]

I’m glad my car doesn’t have one of those.

[@HenchmanRight]

Thanks!