Tervehdys,
En tiedä mihin kategoriaan tämä kuuluisi, joten modet voi siirtää jos katsoo tarpeelliseksi.
Ongelmana on nelivedon toimimattomuus liikkeelle lähdettäessä.
Paikallaan ollessa 4matic-vikavalo vilkkuu kokoajan ja järjestelmäpaine romahtaa 4,8s välein 34barista noin 7bariin, romahdus kestää 0,5s.
Kun painaa jarrua järjestelmäpaine pysyy vakaana tai jos vauhtia on yli 20km/h niin neliveto toimii eikä vikavalo syty.
Vaiva alkoi jakovaihteiston vaihdon jälkeen, ensin luulimme että järjestelmässä on ilmaa mutta ilmaus ei auttanut (tehty veholla). Korjaaja suoritti sähköisen järjestelmätestin ja sanoi että 4G-impulssi puuttuu, tämän tosin pitäisi aiheuttaa ABS-vikavalon syttymisen joten...??
Tähän mennessä testattu kaikki anturit, boxit, ylijänniterele, pumppu, mankut, painekello, testivipu, painekytkin, jarruvalokytkin.
Onko enää muuta mahdollisuutta kuin hydraulinen ohjausyksikkö?
Mankkuja testatessa totesin että ohjausjännite heilahtaa paineen romahduksen tahdissa, en tiedä kumpi on muna tai kana, samalla todettu että AV-levykytkimelle menee normaalisti 1,3bar esipaine.
Koska hydrauliikkaöljyä ei katoa/vuoda niin jonkin pitää päästää paineen paluulinjaan mutta minkä, varoventtiili vai jokin mankku vai...
Kaikki vinkit ovat tervetulleita.
Pete
Apua kaivataan, potilas -89 300TE 4Matic
Apua kaivataan, potilas -89 300TE 4Matic
Ei ole olemassa salaisuuksia, vain salattuja totuuksia.
Mulla kerran kummallinen vika omassakin..., välillä valo paloi välillä ei, välillä neliveto toimi välillä ei.... Vika löytyi jarrukatkaisimesta!!! Uusi katkaisija jarruvaloillle niin taas toimi!!
Yks kaver Viitasaaresta, en muista nimeä, sanoi että ensiksi kannattaa tarkistaa että jarruvalot palaa kun painaa jarrupoljinta (minun autossa paloi), mutta kuitenkin katkaisija rikki... Korjaus ei maksanu kuin 12 € ja 10 min.....
Yks kaver Viitasaaresta, en muista nimeä, sanoi että ensiksi kannattaa tarkistaa että jarruvalot palaa kun painaa jarrupoljinta (minun autossa paloi), mutta kuitenkin katkaisija rikki... Korjaus ei maksanu kuin 12 € ja 10 min.....
W211 280 cdi
W111 220 SB
Kawasaki ZZR 1100
W111 220 SB
Kawasaki ZZR 1100
Eräällä tuttavalla oli juuri nyt samanlaisia ongelmia ja löysin verkosta
jotain asiaan liittyvää, joka voisi olla ratkaisu:
pressure dampening sphere?
http://mbworld.org/forums/e-class-w124/ ... ouble.html
OK, before I have disconected the battery for over 10 minutes the
4matic light was solid on now it gives one quick flash like every 5-10
seconds but if I hold the brake pedal down no flashing or solid light.
After I shut off the car and restart again the 4Matic light stays on
solid and the warning orange triangle comes on solid. The brake lights
work but could it be that there's still a problem with the brake
switch because I don't know what to do anymore and also when the
4matic light is flashing I can heat like the transfer case is trying
to engage and then another click back.
Please help.
Thank you in advance
What you need to repl. is the pressure dampening sphere on the rear
valve block. What happens is that the fluid pressure builds up and the
system does it's self tests. When the self test gets done the pressure
drops below the specified value and the system shuts down and the
light comes on. Then the pressure builds back up and it starts over
again. If you rev up the engine after start up then this should not
happen as the pump is able to provide enough pressure to get through
this process. I would not recommend not fixing this, it is just a good
way of diagnosing the problem. You can also put a pressure gauge on
and watch the pressure go up and down. The pressure dampener is pretty
easy to repl. and I do not remember it costs all that much. Maybe
100-150 bucks but I think it was less.
good luck..
Where is is the pressure dampening sphere exactly located pls ?
It is on the right rear under the car. Just in front of the wheel.
There is a plastic cover that has to be unbolted. The 4-matic
hydraulic valve block is there. All the solenoids and pressure sensor
and the sphere is there. It is ki
jotain asiaan liittyvää, joka voisi olla ratkaisu:
pressure dampening sphere?
http://mbworld.org/forums/e-class-w124/ ... ouble.html
OK, before I have disconected the battery for over 10 minutes the
4matic light was solid on now it gives one quick flash like every 5-10
seconds but if I hold the brake pedal down no flashing or solid light.
After I shut off the car and restart again the 4Matic light stays on
solid and the warning orange triangle comes on solid. The brake lights
work but could it be that there's still a problem with the brake
switch because I don't know what to do anymore and also when the
4matic light is flashing I can heat like the transfer case is trying
to engage and then another click back.
Please help.
Thank you in advance
What you need to repl. is the pressure dampening sphere on the rear
valve block. What happens is that the fluid pressure builds up and the
system does it's self tests. When the self test gets done the pressure
drops below the specified value and the system shuts down and the
light comes on. Then the pressure builds back up and it starts over
again. If you rev up the engine after start up then this should not
happen as the pump is able to provide enough pressure to get through
this process. I would not recommend not fixing this, it is just a good
way of diagnosing the problem. You can also put a pressure gauge on
and watch the pressure go up and down. The pressure dampener is pretty
easy to repl. and I do not remember it costs all that much. Maybe
100-150 bucks but I think it was less.
good luck..
Where is is the pressure dampening sphere exactly located pls ?
It is on the right rear under the car. Just in front of the wheel.
There is a plastic cover that has to be unbolted. The 4-matic
hydraulic valve block is there. All the solenoids and pressure sensor
and the sphere is there. It is ki
4matic - Ihminen ei tarvitse tämän parempaa autoa, tosin sellaista ei ole tehtykään.