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Old 02-20-2007, 02:34 PM
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zcc zcc is offline
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Question I have three questions for a 560SEL

Hello to all, : ))..

1. What is the purpose of the air temp. sensor (pic attached) and what will happen if I disconnected it?

2. How to check an injector manually?

3. Is it true that unbinding an EHA unit then binding it again will cause the car to becoume rough idle forever? (Even after fuel distributor alignment)

Thank you guys
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I have three questions for a 560SEL-air-temp-sensor.jpg  
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  #2  
Old 02-20-2007, 04:48 PM
david s poole
 
Join Date: Mar 2005
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[1] if you disconnect the incoming air sensor the computer will see an open circuit and go to default value[normally a little richer than if it was hooked up and working] [2] if you don't have pressure tester you can take it out and blow through it with air pressure nozzle.you should be able to hear the injector buzz.if not then it's suspect. [3] what do you mean by unbinding eha?
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  #3  
Old 02-20-2007, 11:49 PM
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Quote:
Originally Posted by david s poole View Post
[3] what do you mean by unbinding eha?
Thank you so much for replying. I mean disconnecting it from the fuel distributor.
What do you mean by default value[normally a little richer than if it was hooked up and working? I didn't get it.
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Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D

380SE 1984 <------- Totaled by flipping accident
300SE 1988 <------- Sold
Volvo S70 2000 <---- 4 family
Opel Omega 2002 <-- 4 family
560SEC 1989 <------ Sold
560SEL 1990 <------ Sold
560SEL 1991 <------ 4 my mother
560SEL 1989 <------ Sold
600SEL 1992 <------ Current


http://search.ebay.com/_W0QQsassZkhazenzcc
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  #4  
Old 02-21-2007, 09:38 AM
david s poole
 
Join Date: Mar 2005
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taking off the eha and then replacing it will not cause any changes in it's operation unless the o rings leak after you do this.this will be easy to see. lets suppose that the temp sensor has an operating range between 2400 ohs and 600 ohms the computer will be instructed to use maybe 1400 ohms if it sees an open circuit.hope this clarifies the situation.
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4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
http://www.w108.org/gallery/albums/A...1159.thumb.jpg
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