[diesel_mercedes] Vacuum problems revisited.

 


Lawrence ;

Most of the time all you needs do is : remove the under dash panel and look at the back of the ignition switch , it has two short hose bits that get soft & blubbery from the oil inside .

After that , go under the hood and find the nest of delicate plastic tubes , the brown ones control the engine shut off and will also need replacing of the joining hose bits .

When you're looking at the various plastic hoses and short rubber hose bits , *gently* pull at them one at a time ~ any one that easily slides apart , is bad.

DO NOT waste time cutting off 1/4" of the end or the rubber hose bit , replace it , if it doesn't take a good strong pull to separate , that rubber bit is kaput .

There are also rubber ' spiders ' that have multiple arms , four , five and even six , these prolly need replacing too .

After you've done this , I'll get into where the rest of them are but do the easy things first .

-Nate
       Lawrence wrote :
                               Nate's note reminded me I have a big problem.  My motor intermittently started to not shut off when turning the key off.  Also my door locks seemed to work better in hot weather...but maybe that is serendipity.....for sure my locks don't work.  So seems to me replacing all the rubber connectors is a good deal...except...where are they?  Is there a good resource pinpointing all the locations of the fiddly bits(rubber connectors)?  Lawrence Rhodes

__._,_.___
Posted by: vwnate1@yahoo.com
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (3)

.

__,_._,___
No comments:

Re: [diesel_mercedes] Vacuum problems revisited.

 

Article by TONY CLARK

The trunk automatically locks with the doors and fuel filler door.
It should unlock with them too.
Because your doors are not unlocking, your trunk and filler door remain
locked (like the other 3 doors do).
You need to identify the actuator or hose which is leaking.

* Does the Vacuum assisted braking operate normally? No -
it could be a vacuum pump issue.
* Do the doors unlock with the engine running, but not when
stopped? Yes - Indicates a leak in the unlock circuit
* Do they lock with the engine running, but not when stopped? Yes -
Indicates a leak in the lock circuit
* How long after the engine is stopped do they stop working? Long
time indicates a small leak short time indicates

a serious leak.

Your symptom that the doors and trunk do not unlock indicates that you
need to start work on the unlock side. Under

the drivers front carpet, there are a couple of rubber Tees connecting
the vacuum lines for the central locking.

Identify the unlock Tee by having the drivers door unlocked with the
engine running and checking for vacuum on the

vacuum line coming from the A pillar to each Tee. Vacuum should only be
present on the unlock side. If vacuum is not

present on the unlock side, check on the lock side. If no vacuum on
either, check the vacuum hose under the hood,

as one or more may have come off the rubber "octopus" near the firewall.
If you have unlock vacuum there, block off the vacuum hose going to the
firewall using a Golf Tee. The drivers side

back door should unlock and lock with the engine running.
Repeat this for the rubber X on the passenger side floor to check the
front door operation, blocking off the port going

to the rear of the car. IF both sides work OK, the problem is in the
Fuel door or trunk actuators. The door key

should fit the trunk. This may be different to the ignition key if the
ignition lock has been replaced at some time.
This is easy to diagnose, but takes time. Mechanics generally cost much
more per hour than I can afford, so I prefer

to do the easy, time consuming stuff myself.
I hope this helps,

Just remember : the vauum pipes for the central locking are yellow ,
green tracer means unlock circuit , red tracer means lock circuit and
brown tracer is for the reserve tank in the trunk ~ .
--
Stan George Portland <<

__._,_.___
Posted by: Stan George <ssgkag@frontier.com>
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (2)

.

__,_._,___
No comments:

[diesel_mercedes] Vacuum problems revisited.

 

At the same time maybe I'll replace all the shirt rubber vacuum hose bits in the central locking as there's a leak unless it's cold out , the vacuum bleeds away in a matter of minuets , this normally indicates old & stiff rubber hose connections , they're every where throughout the entire car , inside the doors , the trunk and so on  .


-Nate                                        Nate's note reminded me I have a big problem.  My motor intermittently started to not shut off when turning the key off.  Also my door locks seemed to work better in hot weather...but maybe that is serendipity.....for sure my locks don't work.  So seems to me replacing all the rubber connectors is a good deal...except...where are they?  Is there a good resource pinpointing all the locations of the fiddly bits(rubber connectors)?  Lawrence Rhodes

__._,_.___
Posted by: Lawrence Rhodes <primobassoon@sbcglobal.net>
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (1)

.

__,_._,___
No comments:
Subscribe to: Posts (Atom)