Lada Niva - P0327

[progster]

Pre svega pozdrav svim članovima foruma.

Imam problem sa Ladom Nivom 1.7, verzija 2000-2010. Naime, problem se u vožnji manifestuje bukvalno kao prekid struje na sekundu dve, i to u nasumičnim intervalima. U mestu se ne čuju nikakve nepravilnosti u radu motora, nikakvi prekidi, ali kada se vozi recimo konstantnom brzinom, desi se da motor bukvalno izgubi struju na sekundu, i nastavi dalje, i tako nasumično. Isto se dešava i kada se ubrzava. U početku se to ređe dešavalo, ali kako vreme prolazi sve više i više.

U pitanju je ovakav senzor:
https://www.russian4x4.de/out/pictures/ ... roduct.jpg

Auto je priključivan na dijagnostiku, i jedini problem koji je prijavio je bio P0327, tj. nizak napon na knock senzoru, uz to je i ispisao da navodno postoji problem sa masom na senzoru. Proverena je otpornost na senzoru, i između 1 i 2 je oko 5.5Moma, što je koliko sam video normalno, nije u prekidu. Proverio sam jednosmerni napon na senzoru kada je dat kontakt, i oko 2.4V je, prikačio osciloskop, i kada motor radi osciloskop detektuje impulse na senzoru, tako da deluje da je ispravan. Kablove sam vizuelno proverio, ali ulaze u snopove i ne mogu baš da ih ispratim do kraja, ali nema vidljivih oštećenja.
Ono što sam našao na netu je da je bolje da se stavi brezon i matica, umesto običnog šrafa sa glavom koji je bio i da je to nekima rešilo problem, i nakon te zamene auto je startniji i bolje ubrzava (mada ranije nije delovao da loše ubrzava, ali sada je definitivno bolje). Ali i dalje "štuca". Probano je sa zamenom kablova na svećicama, svećica, bobine, senzora radilice, senzora bregaste, ništa nije pomoglo. Knock senzor nisam mogao da nađem pa nisam mogao da probam drugi.
Auto inače ima problem sa naponom alternatora, koji je 11.5-12V na leru, a kad se da gas ide do 13.6, ali to je problem koji postoji već neko vreme, i nije pravio nikakve probleme do sad, čak ni sa punjenjem akumulatora.

Izvinjavam se na dužem postu, nadam se da neko ima ideju. Više nisam siguran da li neki senzor pravi problem, ili možda kompjuter namerno isključuje struju, ili je kompjuter na izdisaju.

Hvala unapred,
Ivan.

[Geza]

Najverovatnije je senzor u pitanju.
https://lada-klub.com/viewtopic.php?f=10&t=4330

Deo, polovan, nije skup, a izgleda da može i od 1.5 l.
http://frame.goglasi.com/frame?eid=1015 ... %20Lada%20

Pogledaj i ovde za deo.
https://www.polovniautomobili.com/lada-butik

Code P0327 is entered if the following conditions exist:

engine crankshaft speed is more than 1300 rpm;
coolant temperature above 60 ° C;
the amplitude of the signal of the knock sensor below the threshold.
When a permanent fault occurs, the lamp "CHECK ENGINE" lights up after 2 drive cycles.

WHAT TO CHECK:

1. The existence of conditions for the occurrence of code Р0327 is checked.

2. Check the condition of the wires 2 B and 88 G.

HOW TO CHECK:

1. Connect the adapter cable to the diagnostic socket. Start the engine and warm up to a coolant temperature of 60 ° C. Set the engine speed to more than 1300 rpm.

Code P0327 - non-permanent. If it is currently inactive and there are no other codes, analyze the conditions for the occurrence of the code. It is necessary to check the connector of the knock sensor for the ingress of foreign liquids (engine oil), dirt and dust. If heavily soiled, clean with gasoline or any solvent that does not damage the plastic and rubber seals. See “Fault Cards” and “Check Knock Extinguishing System” card.

2. Turn off the ignition. Disconnect the harness pads from the controller and the knock sensor. Check the resistance of wires 2 B and 88 G with a multimeter.

3. To test the sensor, connect a multimeter to its terminals, included in the voltmeter mode with a measurement limit of up to 200 mV. To properly connect a single-contact sensor to the device, connect the negative (black) wire of the device to the sensor mass (mounting point of the mounting bolt). Connect the positive wire (red) to the signal wire located in the sensor connector. Two-contact sensors are connected by both leads to the tester's wires with respect to polarity.

4. Then use a screwdriver to lightly tap on the sensor body, simulating detonation. In this case, the tester should show voltage surges of 40–200 mV, depending on the force of the tremor. In case of any malfunction of the sensor, there will be no reaction to shocks. Sensor should be replaced. Remember that in some cases the instruments are not capable of detecting a weak signal and the volmeter will indicate a sensor malfunction.
Resistance of wires less than 1 Ohm indicates a malfunction of the sensor or controller, or poor contact in their pads.

At resistance of wires more than 1 Ohm eliminate break.

After repair, start the engine, reset the codes and verify that the "CHECK ENGINE" lamp does not signal.

The original domestic sensor is 21120-3855020-03-0 (it is possible without -03-0);
Original sensor Bosch - 0 261 231 046 (possible without spaces).

[progster]

Hvala na odgovoru.
Progledao sam već taj video i tu proceduru, jedino mi ostaje da probam da ga zamenim.
Sutra ću videti da naručim pa da probam, a u međuvremenu ako još neko ima neku ideju neka javi.
Moram samo da proverim da li je isti za 1.5 i 1.7.

[progster]

Problem je rešen zamenom mesta lambda sondama pre i posle katalizatora. Očigledno je da je katalizator zapušen, tako da će to uskoro morati da se sredi verovatno.