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p0300,p0304 tremurat in relanti si sunet puternic

adrianyo1
post 30 May 2019, 13:18
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Va salut,am si eu un megane 2 1,6 16v 220 000 km, si am o problema cu erorile p0300 si p0304,
am citit si aici pe forum si pe altele ca ar fi de la bujii de la bobine,sa schimb bobinele intre ele,am facut asta.
Si motorul in relanti face foarte urat si tremura toata masina, in viteza 1 imi da in nas,dar dupa a doua dupa 2500 rpm,merge normal,doar ca se aude foarte urat(de parca s-ar taia frunze in motor in continuu),pun si eu intrebarea asta aici,poate ma ajutati sa ies mai ieftin.
Legat de bobine,le-am schimbat intre ele si tot pe 4 imi da eroare,si clipeste martorul check engine.
Va multumesc.

This post has been edited by adrianyo1: 30 May 2019, 13:20


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greny
post 30 May 2019, 15:01
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Bobinele.daca sunt duse poti sa le schimbi cat vrei intre ele, la fel va merge. posibil doar codul de eroare sa se schimbe.


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adrianyo1
post 30 May 2019, 15:12
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QUOTE(greny @ 30 May 2019, 15:01)
Bobinele.daca sunt duse poti sa le schimbi cat vrei intre ele, la fel va merge. posibil doar codul de eroare sa se schimbe.
*


Pai ziceam daca le schimb intre ele sa mi se schimbe macar codul de eroare,dar degeaba le-am schimbat intre ele ca eroare tot pe cilindrul 4 a ramas.(si d-asta am eliminat din ecuatie bobinele)


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grig1960
post 30 May 2019, 16:30
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Daca ai mutat bobina de la cilindrul 4 si codul de eroare este tot cu 4 in coada , atunci nu e dusa bobina, trebuie vazut pe la cabluri sa nu fie intrerupte, contacte imperfecte, bujia.
In ceea ce priveste eroarea P0300, e un pic mai complicat, iata ce zic colegii de pe alte forumuri:

A P0300 OBD DTC code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.

Symptoms
Symptoms may include: the engine may be harder to start the engine may stumble / stumble, and/or hesitate other symptoms may also be present

Causes
A code P0300 may mean that one or more of the following has happened:

Faulty spark plugs or wires
Faulty coil (pack)
Faulty oxygen sensor (s)
Faulty fuel injector(s)
Burned exhaust valve
Faulty catalytic converter(s)
Stuck/blocked EGR valve / passages
Faulty camshaft position sensor
Defective computer

Possible Solutions
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back. If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors. Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open. It is helpful to have access to a factory service manual and an advanced scan tool to properly diagnose a random misfire DTC.


Cu stima.

This post has been edited by grig1960: 30 May 2019, 16:49


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adrianyo1
post 30 May 2019, 17:29
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QUOTE(grig1960 @ 30 May 2019, 16:30)
Daca ai mutat bobina de la cilindrul 4 si codul de eroare este tot cu 4 in coada , atunci nu e dusa bobina, trebuie vazut pe la cabluri sa nu fie intrerupte, contacte imperfecte, bujia.
In ceea ce priveste eroarea P0300, e un pic mai complicat, iata ce zic colegii de pe alte forumuri:

A P0300 OBD DTC code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.

Symptoms
Symptoms may include: the engine may be harder to start the engine may stumble / stumble, and/or hesitate other symptoms may also be present

Causes
A code P0300 may mean that one or more of the following has happened:

Faulty spark plugs or wires
Faulty coil (pack)
Faulty oxygen sensor (s)
Faulty fuel injector(s)
Burned exhaust valve
Faulty catalytic converter(s)
Stuck/blocked EGR valve / passages
Faulty camshaft position sensor
Defective computer

Possible Solutions
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back. If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors. Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open. It is helpful to have access to a factory service manual and an advanced scan tool to properly diagnose a random misfire DTC.
Cu stima.
*


Multumesc frumos,am citit si eu chestii de genul,dar cum nu ma pricep prea bine,am zis poate un coleg a mai trecut prin asa ceva si stie exact problema,chit ca nu o fac eu,macar sa ma astept la un pret estimativ la service.


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saturnia2001
post 30 May 2019, 20:26
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verifica si rampa de injectoare,eu am avut unul putin infundat!


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adrianyo1
post 30 May 2019, 20:39
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QUOTE(saturnia2001 @ 30 May 2019, 20:26)
verifica si rampa de injectoare,eu am avut unul putin infundat!
*


ma gandeam la asta,si ar fi cel mai ok sa fie infundat un injector.
am inteles ca se curata cu spray de carburator,crezi ca e ok ?


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grig1960
post 30 May 2019, 21:43
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Eu as schimba prima data toate bujiile si toate bobinele, poate gasesti un coleg binevoitor sa ti le imprumute.



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cosmin&b
post 30 May 2019, 22:48
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Daca la interschimbarea bobinelor codul de eroare e tot P0304, atunci bobinele sunt ok
Se verifica bijiile, injectorul cilindrului 4, EGR, senzor ax came
Daca nu gasesti nereguli, posibil distributia sarita, sau fulia defazoare blocata
Sunt pareri personale, nu sunt specialist.


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adrianyo1
post 30 May 2019, 23:41
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QUOTE(cosmin&b @ 30 May 2019, 22:48)
Daca la interschimbarea bobinelor codul de eroare e tot P0304, atunci bobinele sunt ok
Se verifica bijiile, injectorul cilindrului 4, EGR, senzor ax came
Daca nu gasesti nereguli, posibil distributia sarita, sau fulia defazoare blocata
Sunt pareri personale, nu sunt specialist.
*


Bujiile sunt schimbate cu unele noi,egr din cate stiu nu am.
Multumesc de raspuns,pana la urma trebuie sa o duc la cineva care se pricepe


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Geocio
post 7 Sep 2019, 02:07
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Salut , am aceeași problema , ai rezolvat ?! Ms


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Mincuadelin
post 23 May 2020, 12:24
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Va salut am si eu aceasi problema ati rezolvat???


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EmiSeven58
post 25 May 2020, 19:03
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Salutare, rapid si la obiect, curatat clapeta, curatat captor arbore cotit, la pornire verificat fiecare bobina daca o simte. E a doua oara cand patesc treaba asta, ultima data s-a rezolvat cu schimbarea bateriei care oricum era veche de 7 ani.Cel mai frumos e ca nu da nici un cod de eroare,iar la pornire electromotorul invarte de zici ca nu simte ca a pornit motorul....ce-i drept la 400 de turatii nu prea e pornire


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Yoghy
post 25 Oct 2020, 14:05
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''Va salut, am si eu un megane 2 1,6 16v 220 000 km, si am o problema cu erorile p0300 si p0304,
am citit si aici pe forum si pe altele ca ar fi de la bujii de la bobine, sa schimb bobinele intre ele, am facut asta.
Si motorul in relanti face foarte urat si tremura toata masina, in viteza 1 imi da in nas, dar dupa a doua dupa 2500 rpm, merge normal, doar ca se aude foarte urat (de parca s-ar taia frunze in motor in continuu) , pun si eu intrebarea asta aici, poate ma ajutati sa ies mai ieftin.
Legat de bobine, le-am schimbat intre ele si tot pe 4 imi da eroare, si clipeste martorul check engine.
Va multumesc.''



Am și eu aceasi problemă, îmi puteți spune cum ați rezolvat ?

This post has been edited by Yoghy: 25 Oct 2020, 14:09


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Cornelius
post 20 Dec 2020, 14:23
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Aceiasi problema P0304 si P0300, acelasi motor masina - Clio 3. Se pare ca este o problema destul de des intalnita. Daca a rezolvat cineva problema la modul real ar fi util sa ne impartasiti din experientele dvs. Ceea ce am facut eu sunt urmatoarele:
- inlocuit injector piston 4 (electric era ok, avea rezistenta de 14.6 ohm insa vizual era crapat destul de bine) + verificat si celelalte injectoare (rezistente + curatare);
- schimbat garnituri galerie admisie;
- schimbat toate bujiile;
- verificat bobine de inductie (sunt ok);
- curatat corp clapeta, senzor turatie arbore cotit si ax cu came;
- curatat senzor MAP (senzor presiune aer);
In final dupa o zi fara probleme astazi m-am trezit ca iar palpaie martorul "check engine" in bord si motorul tuseste scurt.
Cu 2 saptamani inainte ca fapt divers am schimbat distributia la masina in urma unui incident neplacut - a sarit de la punct.
Nu imi dau seama daca poate fi de la un montaj defectos al distributiei sau trage aer fals pe undeva in pistonul 4 si astfel se strica raportul aer / combustibil care devine sarac. Probabil ca un test de compresie ar ajuta insa nu l-am facut inca.
Ar fi util de stiut daca toti care ati raportat aceasta defectiune ati schimbat cumva si distributia cu putin timp inainte. Daca a mai patit careva sau chiar din cei care au mai postat si isi aduc aminte si alte amanunte va rog postati caeu sincer de mecanici care iti iau banii pe diagnoze sunt satul.


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Alex2007renault
post 1 Feb 2022, 01:16
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Aceeasi problema: misfire cand la cilindrul 4, cand la 3.
Am schimbat toate bobinele crezand ca sunt pe duca si dupa cateva saptamani la fel. Am schimbat bujiile, o perioada de vreo luna ok, acum din nou misfire...

Coincidenta sau nu cu vreo luna inainte i-am schimbat distributia.
Ati rezolvat cumva?


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Alex2007renault
post 20 Feb 2022, 00:36
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Rezolvat problema: curatat injectoare! oops.gif


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