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#1
Mechanicals / Re: Becker Mexico Sound Qualit...
Last post by Taha - Yesterday at 11:30 PM
On top of the dash. For the earlier models I guess it should be 8cm.
#2
Mechanicals / Re: Becker Mexico Sound Qualit...
Last post by Alex - Yesterday at 10:11 PM
Quote from: Taha on 22 June 2024, 11:06 PMHi,

Regarding the speaker size as much as I know rears are 10cm (4") and fronts are 10cm x 15cm (4" x 6"). I bought a pair of Sony speakers for the rear and for the front I bought a pair from koenigs. The actual size of koenigs speakers is 8cm and the brand is Visaton as you see in the picture:

4"x6" is for the little front speakers? or the later style where they are on top of the dash?

#3
Mechanicals / Re: Fuel Pump not activating
Last post by Jenno1981 - Yesterday at 09:37 PM
Absolute legends, both you. I'll work through that test list Rumb.

The time, heartache and parts this forum has saved me 🙏
#4
Mechanicals / Re: Fuel Pump not activating
Last post by Randys01 - Yesterday at 06:45 PM
A part answer to your questions:
1. nearly for sure you have an earthing/wiring issue with the blue plug.
2. 3 litres overfill of the  oil suggests too much cranking of the engine in the past has indeed seen raw fuel end up in the pan.
: this needs to be drained/new filter asap.
#5
Mechanicals / Re: Fuel Pump not activating
Last post by rumb - Yesterday at 12:44 PM
#6
Mechanicals / Fuel Pump not activating
Last post by Jenno1981 - Yesterday at 03:16 AM
Hi guys,

I'm working on a 1978 280SEL KJet

Background
Has been in storage approx 5-10 years. Has 100K Kms on the clock (checks out). When I recieved the car the fuel pump was sitting in the center console. Tracked down the previous owner who stated "It was running when it went into storage then it had a fuel pump issue and I couldn't get it going again". No details of any previous testing/diagnosis, details scarce.

Actions
1. Tested old fuel pump with 12v direct, confirmed not working and replaced with operational pump (confirmed working).

2. Fuel delivery pack needed some attention (hoses, clamps, new filter etc), completed and reinstalled.

3. Old fuel (black tar...) and tank not in great shape so rigged up an Auxiliary tank and hand pumped new petrol through with the lines to Fuel Distributor (lines out). Bit yellow.

4. Dropped the oil and found it was black and 3ltrs over full (I feel this might be explained by the issue at hand... read on).

5. Ignition position 1 and 2, dash lights on, fuel pump not running.
Engine cranking (tried P, N, R), fuel pump not running.

6. Push down on air intake flap and can hear fuel pump relay activate in the Fuse box (assumed this was all that was required to confirm relay operational?).

7. Confirmed electrical plugs and fuses Seated/good condition

8. (test suggested in previous threads) Ignition off, pulled blue plug to fuel distributor with no reaction (as expected). Ignition on, pulled blue plug and fuel pump DOES activate. Unfortunately the thread I read didn't actually stipulate what the issue was. Hoping someone can finish that off for me.

I'm reading this plug has something to do with a fuel over run Safety or knock sensor (seems it has a few names) which is used for cutting off the pump when the engine is not cranking/running.

Given the CIS, this would ensure petrol is not continually pumped. Would it be correct if there was an issue with this safety, and say the previous owner in an attempt to fix it, ran the engine with the blue plug out (which has been suggested in previous posts), would it be possible 3ltrs of fuel has been pumped into the engine and made its way into the oil pan?

As always, any help in further diagnosis would be very much appreciated.
#7
Mechanicals / Re: Becker Mexico Sound Qualit...
Last post by Taha - 22 June 2024, 11:06 PM
Hi,

Regarding the speaker size as much as I know rears are 10cm (4") and fronts are 10cm x 15cm (4" x 6"). I bought a pair of Sony speakers for the rear and for the front I bought a pair from koenigs. The actual size of koenigs speakers is 8cm and the brand is Visaton as you see in the picture:

#8
Mechanicals / Re: Steering wheel push/pull p...
Last post by Randys01 - 22 June 2024, 07:53 PM
There is something dodgy about the steering wheel shaft itself.........possibly to do with the collision crumple feature.
#9
Shop / Re: W116 Euro Bumpers, NOS LHD...
Last post by nicksm - 22 June 2024, 09:22 AM
I assume these are definitely no longer available?
#10
Mechanicals / Re: Does anyone have a success...
Last post by Rolo - 20 June 2024, 04:23 PM
Quote from: UTn_boy on 19 June 2024, 08:14 PMI'm of the same mindset as Daniel.  I prefer the original set up, so I can't comment on the UWT unit.  Though, I do have a few questions about that parts of the system that are still original. 

Are your vacuum actuator diaphragms ruptured or leaking? If they are, then the various flaps they control will intermittently work or not work at all. 

Does the UWT unit integrate into its operation the original amplifier?  If so, maybe that is stuffed.  If not, then it can be completely ruled out. 


Thanks for the questions.

The flaps are working intermittantly, but I have ascertained that very briefly selecting Defrost, then Auto Hi or Lo always opens the center vents when the cabin is hot.  Now that its 90 out, I'm seeing the center vents opening more often.  Leads me to believe the system is weighting the ambient air temperature much more than cabin tempertures.  Why hitting Defrost first always opens the center vents in Auto Hi and Lo could be a hack I've discovered.

The oddity is that while the center vents remain closed, the side vent air is really cold.  So the ACC is telling parts of the system to get cold.  Fan speeds are high in both modes.

Last year while troubleshooting, UWT told me the cabin sensor tube to the dashboard was disconnected, so it's possible the cabin temperature sensor is bad, althought until the old ACC failed, all was working well.  My shop recalibrated the temp wheel last week so a set 85 is around a true 70 although selecting 65 doesn't open the center vents consistently. (I can't get much heat now)

Here's UWT documentation.  A lot to wade through,

https://unwiredtools.com/manuals/ACCII%20Manual%20Rev%20K9.pdf

In any case, you are all correct.  This replacement ACC was a huge mistake.  Wish one of our members with a working UWT would pick up on this thread.