electrical progress

[mjhmjh2]

I had a bit of a play in the car park at lunch time with my new 250 TD

1) passenger front window. Found blown fuse. changed fuse and it blew again. The switch for the front window didnt feel right so I hoiked it out and tried it on the drivers side, nothing, but noticed another fuse had blown. Hoiked out switch again changed both fuses and used the known good switch on both, drivers side fine, passenger side whirs but no movement - thats one step closer.

2) Rear window drivers side. Linked on same fuse as front left, after above it still didnt work - no noise so more investigation needed - that's when it starts getting complicated within the wiring I think! I tried both the switch on the door and the one up front and there is nothing - I guess it could be as simple as a switch somewhere as I think the power normally goes through both, I guess I could some of the known good switches over again.

3) Fog lights, fuse had been removed (probably to use on the window circuit), replaced the fuse and two fronts and one rear works, I'm not sure if there is one or two at the rear, but I think one is enough to pass an MOT test.

4) "Bungee drive", replies so far suggest its most likely worn engine/gearbox/diff rubber mounts. Certianly the guy last night said that he thought they might need doing (probably knew they needed doing!). I rocked the engine and it does feel a bit loose.

5) Glow plug light doesn't work - not investigated yet (not that important right now). I'll test for a live at the glow plug when the ignition is in the last position before starting I think. Unless there are some suggestions on that one?

Can anyone tell me where I can get cheep spares mail order or somewhere near Basingstoke, Bracknell or Reading please?

Thanks for all yuor replies to other posts helping out
Matthew

 

[BTB 500]

Re. rear fog lights - with Mercs. normally only one (offside) is active.

 

[Dieselman]

If the engine moves much just by pushing then the mountings are probably shot.

 

[mjhmjh2]

Re. rear fog lights - with Mercs. normally only one (offside) is active.

perfect, it works thanks!

Matthew

 

[mjhmjh2]

If the engine moves much just by pushing then the mountings are probably shot.

well thats an easy diagnosis then! Thanks

Matthew

 

[Stratman]

For parts try GSF (German Swedish and French). They have branches nationwide including Reading and Farnham.

GSF branch locator

 

[television]

Door switches can go bad jointed and can be re soldered up, this happens through slight flexing of the door cards

 

[mjhmjh2]

Door switches can go bad jointed and can be re soldered up, this happens through slight flexing of the door cards

I seem to recall the circuit for rear windows goes through both front and rear switch so one going will stop either working - I'll probbaly use some of the known good ones and try it to start with.

Thanks for your help

Matthew

 

[television]

I seem to recall the circuit for rear windows goes through both front and rear switch so one going will stop either working - I'll probbaly use some of the known good ones and try it to start with.

Thanks for your help

Matthew

Dont forget that these things are handed, so you cant go from one side to the other. they can also get water damage, though I do not recommend the use of WD40 it can work wonders on these things, if it works,follow up with a non drying switch cleaner, as I have said dry and bad joints are a known problem

 

[mjhmjh2]

Dont forget that these things are handed, so you cant go from one side to the other. they can also get water damage, though I do not recommend the use of WD40 it can work wonders on these things, if it works,follow up with a non drying switch cleaner, as I have said dry and bad joints are a known problem

The front swtiches seemed to swap over ok, I didnt check the part numbers though. The rears, I've not taken out, are you saying they are physically handed or electrically handed?

Thanks
Matthew

 

[television]

The front swtiches seemed to swap over ok, I didnt check the part numbers though. The rears, I've not taken out, are you saying they are physically handed or electrically handed?

Thanks
Matthew

I am not 100% sure, I do know on some 129's that they are, they could be electrically different as they are the reverse way round, just double check

Its very safe using a multimeter on the 12v range as many switches can fail under load but measure ok off load

 

[mjhmjh2]

will be sure to check and double check, then have a cup of tea and scratch my head.. thanks for the heads up!

Matthew