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  #1  
Old 11-17-2003, 05:24 AM
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190e 2.3 What does EHA stand for? What does it do?

190e 2.3 What does EHA stand for? What does it do?
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1996 E320
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.
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  #2  
Old 11-17-2003, 09:07 AM
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Location: Tucker, Ga USA
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Electro Hydraulic Actautor

Makes fuel pressures "changes" on the lower section of the fuel distributor.

The lower the Lower chamber fuel pressure vs System pressure the RICHER the fuel mixture.
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MERCEDES Benz Master Guild Technician (6 TIMES)
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44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
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  #3  
Old 11-17-2003, 02:24 PM
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Thank you

Thank you
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1996 E320
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.
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  #4  
Old 11-28-2003, 04:36 AM
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Just wanted to add my information to the database here. I had been having a cold start problem with my 1988 190 2.3. Every morning it was hard to start but the rest of the day it would start ok. It turned out that it was in fact the coolant temperature sensor that had gone bad. This is a great site thanks.
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1996 E320
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.
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  #5  
Old 11-28-2003, 08:34 AM
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Join Date: Jan 2002
Location: England
Posts: 1,841
machn2

I have this problem too - can you remind me which one is the coolant temperature sensor?

How did you test it was faulty? I've always meant to look at my early morning starting 'stumbling' but never have the time..

Does your engine now idle when cold somewhat above the usual 750rpm, whereas it didn't before?

thanks

Russ
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190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg
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  #6  
Old 11-28-2003, 02:05 PM
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Join Date: Mar 2001
Posts: 223
The coolant temp sensor is located at the front of the valve cover just to right hand side (as you are standing in front of the car looking at the engine). It is a black plug like thing where when you pull if off it has 4 or 5 pin holes inside of it. I think you can test it with an ohmmeter but I just replaced the part to see if that would help - it did. Before replacing the part the car did idle when warm at about 1000 rpm, when it used to idle at about 750rpm. I will have to take a look at what it is doing now and post it.
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1996 E320
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.
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