Leaking heater core bypAss
MBWorld Fanatic!
Joined: Apr 2005
Posts: 3,784
Likes: 84
From: SCV SoCal
2002 CLK430
If you only bypassed the heater core, then water is circulating through the block normally. If you bypassed more than the heater core, then all bets are off - but a simple bypass is , um, simple. 
Ash knows better than me, but *I think* the dash comes out to access the heater core. It's a tedious job, but doable.
The click could be the air valve which is labeled "MOT". This is common and easy to replace.
Regarding the oil leak, three words: oil cooler seals.
Funny shifting, dying at lights, no heat, ticking, leaks oil and shifts funky. Are you going to roll over or roll up your sleeves? NOTHING you buy short of another Benz, and maybe a 911 (which will make Benz maintenance sound like a day in the park), or an Aston, or Lotus (I love those Esprits - although they have no power and the AC sucks on the early models, but if it's JUST LOOKS, gotta love the Lotus), but anyway, nothing will make you as happy as a Benz. Seen the new AMG sports car yet? Page 26 here. That will help you get over the CLK.
Ash knows better than me, but *I think* the dash comes out to access the heater core. It's a tedious job, but doable.
The click could be the air valve which is labeled "MOT". This is common and easy to replace.
Regarding the oil leak, three words: oil cooler seals.
Funny shifting, dying at lights, no heat, ticking, leaks oil and shifts funky. Are you going to roll over or roll up your sleeves? NOTHING you buy short of another Benz, and maybe a 911 (which will make Benz maintenance sound like a day in the park), or an Aston, or Lotus (I love those Esprits - although they have no power and the AC sucks on the early models, but if it's JUST LOOKS, gotta love the Lotus), but anyway, nothing will make you as happy as a Benz. Seen the new AMG sports car yet? Page 26 here. That will help you get over the CLK.
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Newbie
Joined: Jun 2014
Posts: 8
Likes: 0
2010 E350 Coupe
Core bypass
Has the problem been fixed? If I lived near you I would help you, I usually do all my own repairs, not doing my current Mercedes repairs as its under warranty. In your area you should be able to find someone to help you, wish you the best
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Thread Starter
Junior Member
Joined: Dec 2013
Posts: 43
Likes: 0
From: USA
2001 clk 55 amg
fixed the heater core myself
1) now a few vac lines
2) ac recharge
3) coolant pump was not working before i changed the heater core, so i m going to get that diagnosed..
4) i cracked the windshield and broke 2 vac lines. i m pretty proud considering ive NEVER touched a car before. now that's love.
2) ac recharge
3) coolant pump was not working before i changed the heater core, so i m going to get that diagnosed..
4) i cracked the windshield and broke 2 vac lines. i m pretty proud considering ive NEVER touched a car before. now that's love.
Last edited by Ti8kitti; Aug 27, 2014 at 03:10 PM.
MBWorld Fanatic!
Joined: Dec 2011
Posts: 1,273
Likes: 129
From: Orlando, FL
2015 GL550 4matic
1) this thread is really hard to read
2) this sounds like the type of person who should not be doing repairs, you will only cost yourself more $ in the end.
3) go find a good indy MB service shop and blow the mechanic out back hot stuff. He'll do your work after hours.
2) this sounds like the type of person who should not be doing repairs, you will only cost yourself more $ in the end.
3) go find a good indy MB service shop and blow the mechanic out back hot stuff. He'll do your work after hours.
Newbie
Joined: Jun 2014
Posts: 4
Likes: 0
2001 clk55 amg
So I the only promble left is
1 vacuum leak near maf sensor already replaced housing and seals.
2 bank 1 closed bank 2 na
3 after the car has warmed up the idle and sound of the car gets really quite and normally the car has a rumble like mean style . Any ideas where I should look or where to find the information I need thank you
2 bank 1 closed bank 2 na
3 after the car has warmed up the idle and sound of the car gets really quite and normally the car has a rumble like mean style . Any ideas where I should look or where to find the information I need thank you
