what are the most common problems on a w140
MBWorld Fanatic!
Joined: Jun 2010
Posts: 1,246
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From: tennessee
s320
check heater tee if it was replaced recently Wiring can go bad on certain yearsbefore 1996 check if harness replaced.I do a extra thing on my vehicle to control engine heat,I wrap my exhaust,to make underhood temps. lower.I run non stock thermostat.
Last edited by oldsinner111; Sep 15, 2013 at 09:49 AM.
MBWorld Fanatic!
Joined: Jun 2010
Posts: 1,246
Likes: 52
From: tennessee
s320
well you could add a nitrous 150 shot with stock internals.I bought my unit through ebay used for $250.
Fuel pump,I use pelican Parts OEM stuff,I have 185,000 on my fuel pump,I will change a 200,000 miles.
Fuel pump,I use pelican Parts OEM stuff,I have 185,000 on my fuel pump,I will change a 200,000 miles.
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MBWorld Fanatic!
Joined: Jun 2010
Posts: 1,246
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From: tennessee
s320
On Most MBs reverse is first to go out. you may need a rebuild however there are springs and things I would check first.Try www.benzworld.org the w140 section
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Senior Member
Joined: Jul 2008
Posts: 279
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From: Western Canada
S320 GL350
Heater Tee - Part No.?
If I was to order myself a heater tee for the M104 in my '95 S320, what part number would I use - I see there is a tee (thermal valve) going to the air collector unit (that breathes from the hood vents above), and another connection directly through the fire wall...made by BEHR.
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Joined: Nov 2014
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Mercedes-benz w124 300d
Hey guys thanx for the info bowt the w140.I want to buy a first car but the thing is in my area in Zimbabwe,people have a negative thing about mercs.I am tall and want a technologically gifted merc and i was thinking of getting either the w140 300se or the w210 e280 or the least i would want is a w202/3 c200.whats ur take on this and what should i get.PLEASE HELP A FEllow.
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Mercedes-benz w124 300d
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Joined: Jan 2014
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From: Pottstown, PA
'97 S500 Coupe, 2016 AMG S63 Coupe, 2007 Audi Q7
I have the older CLK(a208) convertible and a S500(c140) coupe. The CLK is more sporty to drive on twisty roads and to manage in tight places for parking (smaller and lighter weight), while the S500 is a great cruiser, really quiet with more than enough power to make you smile. I have found the S500 to be less costly for maintenance and more reliable, but you can't put a price on top down crusing!!! Both cars are fun but you need to budget for maintenance as you are looking at 10 - 15 year old Mercedes and things will break on any car with that age, but the cost shouldn't be extreme if you buy a well maintained model and you have a proper inspection conducted before you buy.
MBWorld Fanatic!
Joined: Jun 2010
Posts: 1,246
Likes: 52
From: tennessee
s320
yes for the w140s up to 96,were headgasket,and engine wiring bad.My 99,has never had a headgasket problem on the m104 engine.The v8s I heard you have to watch for the cam oilers to break up.I would look for the metal replacements.I suggest running mobil one syntheic ATF.my w1216 diesel I use a mix of syntheic ATF,and conventional ATF.I buy the Coastal Brand.
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Joined: Aug 2016
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From: NEW JERSEY (Union County)
1996 Mercedes-Benz S420
What exactly do you wrap your exhaust with and what part of the exhaust do you wrap,and why a non stock thermostat??? Thanks in advance.I own a 1996 S420...
