scanner or code readers?

#1

Hi all,

My problem is when I stop, drive or back up the car surges (rpm normal about
800 surging 1600rpm. I would like some suggestions or what is a relatively
priced scanner or code reader. I have already changed the O2 sensor in the
exhaust pipe. I have a 1989 560SEL with 155,000 miles on the odometer.

TIA,

Bill

#2

Scanner won't help in this car... not much... and too much money for one.

It is most likely to be the idle speed controller that needs to be replaced.
I did that on my 380SE. I would take out the ICV out and clean it out with
carburator cleaner.

Service manual for diagnostic on this is straightforward if you have the MB
original CD.

#3

Scanner won't help in this car... not much... and too much money for one.

It is most likely to be the idle speed controller that needs to be replaced.
I did that on my 380SE. I would take out the ICV out and clean it out with
carburator cleaner.

Service manual for diagnostic on this is straightforward if you have the MB
original CD.

#4

Scanner won't help in this car... not much... and too much money for one.

It is most likely to be the idle speed controller that needs to be replaced.
I did that on my 380SE. I would take out the ICV out and clean it out with
carburator cleaner.

Service manual for diagnostic on this is straightforward if you have the MB
original CD.

#5

Scanner won't help in this car... not much... and too much money for one.

It is most likely to be the idle speed controller that needs to be replaced.
I did that on my 380SE. I would take out the ICV out and clean it out with
carburator cleaner.

Service manual for diagnostic on this is straightforward if you have the MB
original CD.

#6

Hey Tiger,

I have alldata to look up where parts are located, is the ICV on top of the
engine (by the firewall?. I also looked online for a new valve, AUTOHAUS
shows the price $150, is that right?

Bill

"Tiger" <tiger0002 (AT) hotmail (DOT) com> wrote

Quote:

Scanner won't help in this car... not much... and too much money for one.

It is most likely to be the idle speed controller that needs to be
replaced. I did that on my 380SE. I would take out the ICV out and clean
it out with carburator cleaner.

Service manual for diagnostic on this is straightforward if you have the
MB original CD.

#7

Hey Tiger,

I have alldata to look up where parts are located, is the ICV on top of the
engine (by the firewall?. I also looked online for a new valve, AUTOHAUS
shows the price $150, is that right?

Bill

"Tiger" <tiger0002 (AT) hotmail (DOT) com> wrote

Quote:

Scanner won't help in this car... not much... and too much money for one.

It is most likely to be the idle speed controller that needs to be
replaced. I did that on my 380SE. I would take out the ICV out and clean
it out with carburator cleaner.

Service manual for diagnostic on this is straightforward if you have the
MB original CD.

#8

Hey Tiger,

I have alldata to look up where parts are located, is the ICV on top of the
engine (by the firewall?. I also looked online for a new valve, AUTOHAUS
shows the price $150, is that right?

Bill

"Tiger" <tiger0002 (AT) hotmail (DOT) com> wrote

Quote:

Scanner won't help in this car... not much... and too much money for one.

It is most likely to be the idle speed controller that needs to be
replaced. I did that on my 380SE. I would take out the ICV out and clean
it out with carburator cleaner.

Service manual for diagnostic on this is straightforward if you have the
MB original CD.

#9

Hey Tiger,

I have alldata to look up where parts are located, is the ICV on top of the
engine (by the firewall?. I also looked online for a new valve, AUTOHAUS
shows the price $150, is that right?

Bill

"Tiger" <tiger0002 (AT) hotmail (DOT) com> wrote

Quote:

Scanner won't help in this car... not much... and too much money for one.

It is most likely to be the idle speed controller that needs to be
replaced. I did that on my 380SE. I would take out the ICV out and clean
it out with carburator cleaner.

Service manual for diagnostic on this is straightforward if you have the
MB original CD.

#10

https://www.autohausaz.com/search/imageexpand.aspx?imageurl=../secure/PartImages/0001411625.jpg

With engine running, if you unplug the wire, the idle speed will go up...
that is normal if it happens. However, it needs to be cleaned. from the two
pipe tube.

ICV unit is quite reliable and rarely needs to be changed.

The idle speed controller... however, will crap out due to age. Easily
determined to be good or bad by following the diagnostic procedure with a
multimeter.

https://www.autohausaz.com/search/imageexpand.aspx?imageurl=../secure/PartImages/0065458532.jpg