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1996 Mercedes-Benz Mercedes Benz S Class Coupe Questions & Answers
I have a 1996 Mercedes S 320 secondary air pump
Hello I'm an M.B. tech- lot's of people have had dificulty with that code. The code means just what it means insuficiant air flow. The egr system does the same thing. What generaly ends up being the problem is a clogged port in the engine head. Unfortunatly on the air pump the port is near the exhaust side of the deck and you must remove the head to repair it where as the egr you can clean the port at the throttle motor. First thing you need to do is make sure there are no more codes in the system. The way that the ecu moniters the operation of the air pump is map senser for vac to the switcthover valve which is the same switch over valve for the egr located in the front of the cam cover. Next it will use the front o2s to moniter the airflow. Also it moniters the airpump relay operation. Operation is started during open loop by the coolant temp. senser. I beleive that this vehicle could possibly have a diagnostic mod along with the engine ecu which moniters the ecu performance. This also needs to be scanned for codes, They discontinued these in late 95. Make sure you have source vac, to the switchover valve-next moniter switchover valve otlet to diverter valve during air pump operation. To properly moniter o2 sensers you will need the proper equipment. Inspect all the airpump plumming as well. assuming the air pump is getting power and operating properly. I would recommend taking the vehicle to an M.B. repair shop and have the system function tested and scanned-with a flow check for the clogged air injection ports. Depending on how many miles I would just do a valve job. If you have any more questions just post and I will get back to you
3/14/2015 10:03:19 AM •
1996...
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Answered
on Mar 14, 2015
Which one is cylinder 7 in a 96 mercedes s420?
Here's firing order diagram for your vehicle. Cylinders are numbered and arrow points towards front of vehicle. That should solve your problem. Please leave feedback if that solves your problem!
-Brett
8/5/2014 2:32:48 PM •
1996...
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Answered
on Aug 05, 2014
S500
this is an indication that there is a problem in the cooling system. Check the radiator cap is operating correctly. Check for correct operation of cooling fans ( replace if you have a viscous fan hub on the fan). Have a flow test done on the radiator as there may be too many cores blocked for efficient cooling. Run the fault codes to check for air/fuel /timing issues that will affect the engine operating temperature.
5/14/2014 7:23:26 AM •
1996...
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Answered
on May 14, 2014
How do i check oil and trand=smission fluid in1996 mb s600
all dip sticks for engine and auto transmition are under the bonnet oil for engine ( as you look into engine bay ) should be next to water pump fan belt ect trans fluid dip stick should be same side but nearer the back of the engine bay
2/13/2014 10:40:52 AM •
1996...
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Answered
on Feb 13, 2014
Sunroof slider for s320 stops after 6 inches
I had a 94 s420 and now my 96 s320 same problem. nothing with lubricating but u can try buying some. I was told Mercedes come from Germany where it always is cool or cold. they have an inuation made of this hard like tar material. you may even see it on your glass and see some chunks that feel off after time and time being heated here in the northeast or where your from. I know my cars interior reaches at times in the summer sometimes 120f. If you take down the headliner u should be able to see if it is that tar board insulation. I just leave mine closed.
2/2/2014 2:19:56 AM •
1996...
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Answered
on Feb 02, 2014
Fuse diagram s600
take it to your locale repair shop, if you dont know how, where or with what you should leave it to those who know what there doing.
12/25/2013 9:41:57 PM •
1996...
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Answered
on Dec 25, 2013
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