Dan Lavric

vacum frana

50 posts in this topic

Salutare. Din nou cu o problema.....am condus un passat din 2012 si mi.au placut la nebunie franele. La mine cand pornesc dimineaza masina pedala e tare si tot timpul porneste motorasul de la vacum. Oare sa am scurgere de vacum undeva? Franele au 15.000 Km. Comparatie cu passatul parca am caruta cand vine vorba de franare.......cum pot sa verific daca nu sufla pe undeva....am ascultatt pe acolo pe la oala aia....dar nu se aude mai nimica.....si inca ceva......cand pornesc dimineaza sau in special dupe ce sta masina careva ore....se aude un bazait de motoras pentru cam 10 secunde..undeva din spatele butoanele de clima. am incercat sa pornesc cu clima/aerul oprit, cu cd oprit....tot se aude...se aude un motoras cum ar lucra.ceva....si nu se auzea pana acuma.....daca ma puteti ajuta care ati dat de problemele astea....

Edited by Dan Lavric

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Salutare. Din nou cu o problema.....am condus un passat din 2012 si mi.au placut la nebunie franele. La mine cand pornesc dimineaza masina pedala e tare si tot timpul porneste motorasul de la vacum. Oare sa am scurgere de vacum undeva? Franele au 15.000 Km. Comparatie cu passatul parca am caruta cand vine vorba de franare.......cum pot sa verific daca nu sufla pe undeva....am ascultatt pe acolo pe la oala aia....dar nu se aude mai nimica.....si inca ceva......cand pornesc dimineaza sau in special dupe ce sta masina careva ore....se aude un bazait de motoras pentru cam 10 secunde..undeva din spatele butoanele de clima. am incercat sa pornesc cu clima/aerul oprit, cu cd oprit....tot se aude...se aude un motoras cum ar lucra.ceva....si nu se auzea pana acuma.....daca ma puteti ajuta care ati dat de problemele astea....

Motorasul se auzea si pana acuma, dar nu ai bagat de seama. In spatele panoului de clima, este un ventilator micut. Ce motoras de vacuum porneste?

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Daca pierzi vacum ar trebuie sa se simta la a 3 a pedala de frana consecutiva ar trebui sa nu iti mai tina frana. Daca e aceasta problema se verifica tulumba la servofrana daca fasaie pierderi vacum sau supapa unisens care este pe furtunul negru care iese din tulumba servofrana, pompa vacum si trasee vacum.

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Da intradevar se auzea si pana acuma...dar nu imi plac franele...de exemplu nu ar trebui sa apas frana la maxim...la mine o pot apasa la maxim....adica ajunge pedala la maxim....o sa fac cateva pedale....sa vad..dar nu tin cum trebuie...si motorasul ala din interior...nu are legatura cu franele....e alt motoras care se aude.....

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La orice masina poti apasa pedala pana la fund. Ce placute ai ?

Cum ti a spus si PaunIonut, motorasul care se aude este de la clima.

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oky..am facut astazi pedale...si se duce la fund pedala..nu se duce usor..dar in parcursul a cateva secunde o simt cum se lasa la fund.:)))...cum as putea sa verific...vacumul.am vre.o supapa pe furtun?

Placute scrie made in germany pe ele....:)) dar nu sunt uzate....dar simt cum se duce pedala la fund..si teoretic dupa ce porneste motorul si sta la relanti pt 2 minute nu ar mai trebui sa pornesca pompa vacum cadn franez....la prima pedala nu porneste dar dupa 2-3 pedale porneste si pompa vacum...pt cateva secunde....

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Eu tot nu inteleg despre ce pompa de vacuum vorbesti. Ce pompa porneste cand apesi frana?

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Pompa vacum este alimentata de vacumul motorului ... si pedala se inmoaie si merge usor, nu are ce sa porneasca dupa 2 minute , nu este vorba despre o pompa electrica

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Adica pompa de vacuum= tulumba servo frana? La asta se refera?

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Pai la s60 este o pompa electrica carte face vacum la frana. pompa electrica e la modulul abs. Aia porneste cand pui contactul si face vacum ca sa ai frane si fara motor pornit,,, de acea poma vorbesc eu. E un motoras acolo care face vacum sa ai frane si fara motorul pornit. Motorasul e langa tulumba aia mare deasupra modulului ABS! Dar eu nu prea am frane aiai e problema....

Edited by Dan Lavric

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Pedala se duce la fund pentru ca ai brake asist .

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Dan-du-te intr-o parcare si fa o franare de la 50-70km/h si masoara in cati metri se opreste.Apoi ne dam cu parerea daca ai sau nu frane.Ideea e ca nu compari actionarea pedalei de frana la grupul VAG sau japoneze cu Volvo,mai ales P1.

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o sa merg....sa fac asta....dar simt ca nu am frane bune...trebuie sa apas foarte tare pe pedata....si daca apas pe ea tare simt cum se duce spre fund..nu cu totul...dar se duce....

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Cand ai brake assist masina sesizeaza cand tu franezi cu ce forta ai apasat pe pedala iar masina isi concentreaza toata forta de franare pe ea degeaba te urci cu doua picioare pe pedala de frana ea iti franeaza la capacitatea maxima .

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Pompa vacum electrica are si v40

pentru ca are cutie automata

cand nu are vid suficient in servo pentru franare cupleaza si pompa electrica:)

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1) Power brakes use a vacuum to make it easier to depress the brake pedal

2) The engine is normally used to create this vacuum

3) If the engine isn't running or isn't creating enough of a vacuum, that pump will come on to assist

Thus, it is normal if

1) You turn the car off and take the key out

2) Step on the brake pedal a whole bunch of times until it gets stiff

3) Insert the key and notice that the vacuum pump turns on

The pump turns on because the engine isn't running and there's no vacuum to help you apply brakes.

Normally the vacuum doesn't leak at all or leaks very slowly.

- If you park your car, come back the next morning, and notice that the brake pedal is stiff, then you might have a vacuum leak.

You can verify that the pump works by doing the test I mentioned above (i.e., pump the pedal until it gets stiff when the car is off and the key is out, and then insert the key)

- Verify that the pedal returns to it's non-stiff state (it should do so within 10-15 seconds)

If the pedal remains stiff even after the pump runs (and only unstiffens when you start the engine) then your pump is malfunctioning and needs to be repaired/replaced.

Driving with a failed vacuum pump is dangerous. If your engine dies or fails to properly produce a vacuum, you will only have a few brake presses before it becomes extremely difficult to depress the brake pedal. If such a situation does occur, remain calm and leverage your entire body to depress the brake pedal as you bring the car to a controlled stop.

If you don't feel like replacing the pump, I suggest a gym membership so that you may build appropriate lower body strength. Alternatively, you could hire someone with really buff legs to drive you to/from various destinations. I suggest making them sign a waiver, with very complicated language and statements declaring the failed vacuum pump hidden within pages of text.

That is all.

Edited by paunionutz
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Pai asa se intampla la mine. pompa funtioneaza foarte bine...dar dimineaza cand dau sa pornesc pedala e tare. Deci de seara pana dimineaza pierd vacum....pe unde naiba stie..>:))) in rest funtioneaza exact ca in textul dat de tine !

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Check the check valve

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Check the function of the check valve.

Start the engine.

Remove the check valve from the power brake booster.

Check that there is a vacuum. Feel the check valve.

Reinstall the check valve.

Press the vacuum hose. Listen for a leak. Replace the rubber bushing if there is a leak.

Switch off the engine.

Note! Replace a defective check valve.

Check the function after replacing the check valve

Depress the brake pedal several times to so that it has no travel.

Hold the pedal down. Start the engine. The pedal should travel and feel softer.

Release the brake. switch off the engine. Wait 1 minute. Then depress the pedal. The pedal should still feel soft but should become stiffer when it is depressed several times

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Si la masina mea am avut o problema similara dar era brake booster spart, l-am inlocuit si nu mai am probleme franeaza foarte bine.

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Am verificat supapa dar pare buna....am suflat in ea si nu trece aerul.....sa fie placutele de proasta calitate? nu stiu ce sa mai zic....am ascultat sa vad daca se aude cum pierde pe undeva....da nu se aude nimica.....am pus sotia sa franeze..dar totul pare bun....

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nu stiu exact...ca nu is puse de mine ci de unde am cumparat masina....dar o sa ma uit si iti zic.....crezi ca pot sa fie placutele de vina....ca sincer apas pedala cu putere si nu reusesc sa blochez rotile....

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