Mercedes-Benz Forum banner

1 - 11 of 11 Posts

·
Registered
MB 1985 W126 300SEL, 1991 MB W124 260E, 2007 MB W209 CLK200, 1999 Skyline R34 GTT Veilside,
Joined
·
342 Posts
Discussion Starter #1
Hi Guys

I am so glad to have fix my trans shift point with bowden cable adjustment, now my hopes is much higher to tackle an upcoming trip that covers 2500kms journey next month. It will be a 12 hour drive to/fro.

I only own this car for 5 months, spend replacing mostly on maintenance parts, bushes, suspension, flex discs, fuel pump, engine & gearbox mounts. Recently change the bolts for my camshaft plus top head job done 3 years ago (from previous owner). Engine running smooth, water temp, oil pressure and all electrical working.

Pls advice what should i replace or look out or stock up parts in the boot before this journey.
 

·
Registered
`81 W123 280E, `83 W126 280SE, `85 W126 280SE, `91 W126 500SE, `96 W202 C180T, `99 W202 C220CDI
Joined
·
511 Posts
I am a W126 traveler too...as you all can see on my topic http://www.benzworld.org/forums/w126-s-se-sec-sel-sd/1510596-w126-road-trip-pictures.html

I ussually cover on each long trips (once or twice in a year) aprox. 4500-5000 km in 7-10 days... I can say that the W126 is very confortable to drive long distances and if the car is well maintained you have no reason to be afraid that something will happend...

Before a trip I allways make a check of the tires, brakes, oils, sparks, electrical systems... And filling up the tank!

Bon voyage! ;)
 

·
Registered
MB 1985 W126 300SEL, 1991 MB W124 260E, 2007 MB W209 CLK200, 1999 Skyline R34 GTT Veilside,
Joined
·
342 Posts
Discussion Starter #4
Thanks for the input on what need to be check prior to the trip. I hope to do a preventive maintenance job like changing the radiator+thermostat or alternator cos my friends who is going with me is kinda worried that my car will breakdown due to those failures since I am not very sure how long parts been used by the previous owner.

The only problem i have now is my trans not shifting properly after an Indy rebuilt it, I am currently still adjusting (tighten) the bowden cable but it seem to shift around 3200-4000k on the 1st gear from standing start, have to let go the throttle before it upshift to 2nd. If i loosen the cable it will shift earlier like 3000rpm and will return to 1st gear everytime when moving slowly plus the car felt like no power/lazy.

What do i do now...?
 

·
Registered
`81 W123 280E, `83 W126 280SE, `85 W126 280SE, `91 W126 500SE, `96 W202 C180T, `99 W202 C220CDI
Joined
·
511 Posts
Whit the transmission I do not know what to do...but it seams that something was not made properly when it was rebuilt...or you have to play little more with the adjustments...I think that the proper shift point is around 2000-2200 rpm. (some say 1800-2000)


If you want to check the alternator make sure that you will check the starter motor too... I had once a starter motor failure at 350 km from home and I can tell you that is not fun to stay around the car and do not have to manage to start it! Finally I have been towed by a friend of mine 25 km and we have install an barrowed starter engine in a parking lot...Ah...and it was Sunday, so no shops or mechanics open... :(





 

·
Slightly creased
2015 ML 400 x 2
Joined
·
16,613 Posts
if you have had the transmission rebuilt, you may need to adjust the transmission modulator which is a vacuum operated valve on the left side of the transmission housing.
 

·
Registered
MB 1985 W126 300SEL, 1991 MB W124 260E, 2007 MB W209 CLK200, 1999 Skyline R34 GTT Veilside,
Joined
·
342 Posts
Discussion Starter #7
I really hope for a smooth & problem free for the upcoming trip that involved driving from Malaysia to Thailand across the border plus language/communication could be a problem if anything happens.

I will check the starter & alternator condition but what are the symptoms for a probable failure since everything seem to work fine now as my daily city ride.

As for the vacuum modulator, i thought it's to adjust the firmness when changing gear. I did get another Indy who has the vacuum meter and he has set them to "Stock" pressure based on my modulator colour/model, but he didn't do any adjustment to the bowden cable since he wasn't the Indy who did the rebuilt. Heard so much about K1 spring kit for flaring issues...does the high shifting point regards as flaring?
 

·
Registered
MB 1985 W126 300SEL, 1991 MB W124 260E, 2007 MB W209 CLK200, 1999 Skyline R34 GTT Veilside,
Joined
·
342 Posts
Discussion Starter #8
If you’ve maintained it well you need to just stock up on oil.
Yeah I read in the manual to top up 1 litre of engine oil after every few thousand km's of driving...
 

·
Registered
MB 1985 W126 300SEL, 1991 MB W124 260E, 2007 MB W209 CLK200, 1999 Skyline R34 GTT Veilside,
Joined
·
342 Posts
Discussion Starter #9
Hi Guys,

Did some bowden adjustment today with only slight tension but i still feel as though im starting from 1st gear and has to release the pedal so that 2nd can shift up at 3200-4000rpm. The rest of the upshift is more direct though a slight firmness (pull back effect or thud) can be felt. Anyway have some photos on my throttle connection taken 1 month ago while at the workshop since i am not sure how to remove the huge air filter box.

Please advice whether the throttle linkage has the correct adjustment. I wish to get back the smooth upshift around the 1800rpm-2200rpm with light throttle input like how all automatic should be.
 

Attachments

·
Registered
`81 W123 280E, `83 W126 280SE, `85 W126 280SE, `91 W126 500SE, `96 W202 C180T, `99 W202 C220CDI
Joined
·
511 Posts
...
I will check the starter & alternator condition but what are the symptoms for a probable failure since everything seem to work fine now as my daily city ride...
You must check the alternator and starter motor carbon brushes, bearings and bushes. Even they are symptom free they can fail. The main reason why I reccomend this is that I have had the booth failures and as I know you had the car only for 5 mounths, so you did not know when those parts were last checked or serviced! ;)

Yeah I read in the manual to top up 1 litre of engine oil after every few thousand km's of driving...
Be carefull to not top it ovet hte MAXIMUM line! Always check the engine oil level before a long trip!


Did some bowden adjustment today with only slight tension but i still feel as though im starting from 1st gear and has to release the pedal so that 2nd can shift up at 3200-4000rpm. The rest of the upshift is more direct though a slight firmness (pull back effect or thud) can be felt...
How it feels when it shifts in KICK DOWN?
 

·
Registered
MB 1985 W126 300SEL, 1991 MB W124 260E, 2007 MB W209 CLK200, 1999 Skyline R34 GTT Veilside,
Joined
·
342 Posts
Discussion Starter #11
You must check the alternator and starter motor carbon brushes, bearings and bushes. Even they are symptom free they can fail. The main reason why I reccomend this is that I have had the booth failures and as I know you had the car only for 5 mounths, so you did not know when those parts were last checked or serviced! ;)

I am gonna check it this weekend with an electrical indy guy, maybe changing it new would be the best solution.

Be carefull to not top it ovet hte MAXIMUM line! Always check the engine oil level before a long trip!




How it feels when it shifts in KICK DOWN?
I don't get any shift down even up to 3/4 throttle input. Need to activate Kickdown switch every time i need to do some overtaking. Once on kickdown, it will rev up normally and accelerate like normal.
 
1 - 11 of 11 Posts
Top