2011 Accent AT - Engine Knock!

[bratski]

1 araw lang ako mag leave. sa hyundai sucat para malapit lang sa amin. may mga papasilip ako at gusto ko ring silipin. nung nag 1k pms ako sa kanila, andun ako sa service bay nila. silip ng kahit anong pinapa service. gusto ko ring masilip yung sa door locks eh. engine knock, di bothersome kasi di ko hinaharurot paakyat sa parking building kaya may naririnig ako. pero di siya all the way paakyat. pag papalapit na sa patag kasi pa-menor ako, baka may kasalubong eh. pag nasa patag naman, ayus din ang hatak / sipa.

Good to know hindi ka bothered sa engine knock. Pero in the long run siairain nyan makina mo.

[erj22]

i understand pero di laging may knock. tuwing paakyat lang na medyo steep like sa parking building sa office, coming from full stop. pag paakyat sa skyway, wala namang naririnig. kasi may buwelo. pag patag ang daan walang knock, kahit ilang rpm. power - weight ratio siguro.

[prowl21]

Lucky for you because you have choices 1) Tell your company that the car requires high octane gas as per Hyundai and to change your card's coverage or, 2) replace your car or the whole fleet with cars that will run on unleaded.

You have leverage on this case as the CASA would like to keep your company happy. Naturally if your company cancels the fleet or ditches them all for another brand that might send a nice ripple effect to HARI to address the issue or for local buyers to avoid them. You can mention this thread to your company as validation of your claim, they may recognize it since their invested money is involved.

you are right.. but i am giving them this last chance.. today, nasa casa sya and they're gonna perform this "GDS" daw on my car.. if the problem persists, i'm telling my superiors about this..

[aimphilippines]

Sa mga research ko po sa internet nabasa ko po ito share ko lang.

Web Site Common Hyundai ECU Faults - ECU Testing

Hyundai Common ECU Faults

Non running engine or very poor running

The engine ECU’s fitted to these models are notoriously prone to failure. The problem lies with the type of capacitors used in side the unit that are prone to damage from voltage spikes. Even the voltage spike from an starter motor has been known to blow one of these ECU’s.

Hyundai, all models 1993 - 2004 onwards

Emission Failures
High CO & low lamna reading. common causes of rich running faults are the lamna sensor or the ECU (engine control unit) both of these parts are relatively simple to check, to check the sensor strip back the insulation on the signal wire from the lamna sensor, this wire is usually black. Then hold the bare wire between your finger and thumb then touch your other hand on to the battery positive the internal resistance of your body will give 1volt at your finger tips which is what the sensor would give out when the engine runs rich, if the emissions come down then you have a faulty lamna sensor or wiring but if the emissions remain the same then the ECU is a possible fault. For more information on ECU testing click on ECU
High CO with normal lamna reading. If the oxygen level is below 1% then a high CO with a normal lamna reading can only be one thing - the catalytic converter, when ever you get this reading the catalyst should be condemed. But always make sure you check the oxygen level first, if its high (over 1% at speed) then you’ve got a leaking exhaust or engine runing problems.

Hyundai, all models 1986 - onwards

Hessitation, power loss, missfire. This type of problem can be one of the most time consuming faults to find because the problem often is only slight and the fault only shows up when the car is being driven under load. One common cause of this is a fouled or sticking injector.


Hope this helps

[bratski]

Guys eto na update. After getting my car last monday may knocking parin on the old fuel (petron unleaded 93 octane), although knocking this time is very faint. Naubos ko yung fuel just this morning And filled up with shell v power. Aba nawala knocking kahit na im doing everything to make it knock (eg pitik pitik sa pedal then biglang bitaw sa gas pedal and feather it again.)

Ill try more runs tomorrow para ma thorough test ko. Im confident hindi babalik ang low power kasi may slight knock na after the update. The last time nag low power walang knock after the update. Sana nga hindi na mag knock and low power. Kasi right now im on the refunding mode. Any slight knock or low power and im pushing for a refund for this piece of crap.

[erj22]

sir bratski, talagang sinagad ka ng unit niyo ah... kumbaga isang tulak lang, bangin na... keep us posted sir.

[WalterBishop]

Guys eto na update. After getting my car last monday may knocking parin on the old fuel (petron unleaded 93 octane), although knocking this time is very faint. Naubos ko yung fuel just this morning And filled up with shell v power. Aba nawala knocking kahit na im doing everything to make it knock (eg pitik pitik sa pedal then biglang bitaw sa gas pedal and feather it again.)

Ill try more runs tomorrow para ma thorough test ko. Im confident hindi babalik ang low power kasi may slight knock na after the update. The last time nag low power walang knock after the update. Sana nga hindi na mag knock and low power. Kasi right now im on the refunding mode. Any slight knock or low power and im pushing for a refund for this piece of crap.

sir bratski, hopefully mag tuloy tuloy na yan... langhiya, talagang nagtrial error ang HARI. just want to clarify sir yun huling ginawa ng HARI sa ecu mo, binalik ba nila yun dating configuration (orginal)? kung dating configuration kasi yun, bakit nawala sa v-power,contrary to your previous experience na sibukan mo na lahat ng gas. if not, can you re-post exactly what kind of update...tnx. if this works, pababalik ko na din yun sa kin...then will use v-power din.

[bratski]

sir bratski, hopefully mag tuloy tuloy na yan... langhiya, talagang nagtrial error ang HARI. just want to clarify sir yun huling ginawa ng HARI sa ecu mo, binalik ba nila yun dating configuration (orginal)? kung dating configuration kasi yun, bakit nawala sa v-power,contrary to your previous experience na sibukan mo na lahat ng gas. if not, can you re-post exactly what kind of update...tnx. if this works, pababalik ko na din yun sa kin...then will use v-power din.

Actually hindi ko narin alam kung anong version itong update na ginawa nila. Last week alone naka dalawang pasok ako sa casa, yung unang "remedy" nawala yung low power, pero may knocking uli, the same knocking when i first bought the unit. Then SA at erod called me up for update on my unit and i said bumalik uli knocking. So binalik ko after a few days to "update" or "remedy" the ecu uli, tapos when i got the unit last monday mas lumakas pa hatak but i still hear a faint knocking sound.. I must admit hindi na ganun ka bothersome yung knock niya, kasi kailangan ko ng pakinggan mabuti para marinig ko. Fuel used ko was petron unleaded on both instances.

Itatawag ko na sana sa SA ko today yung very slight knocking and isosoli ko na sana yung unit when out of curiosity naisip kong kargahan ng shell v power, kungbaga what the heck, last year nung kasagsagan ng knocking kahit anong gas ikarga ko and wether kahit anong brand knock galore parin. Tried everything before from petron unleaded,xcs,blaze, then caltex silver,gold, shell unleaded v power. Lahat knock.

Nung unang pinasok ko palang last week na nawala yung low power lumakas na hatak niya, then mas lumakas and more respomsive pa nung second balik, all this on petron unleaded 93 octane fuel, nung nagkarga nako ng shell v power yesterday admittedly hindi lumakas ang hatak, kahit pa 97 octane siya compared sa 93 ng petron unleaded. Pero ang biggest effect lang is nawala yung slight knock.

I never thought i'd say this or rather "type" this about my accent, but i enjoyed driving it for the first time since buying it 8 months ago, i will conduct further tests and would probably use it for the rest of the week just to be sure na wala talagang knock or bumalik ang low power, lets just hope na hindi short-lived itong current bliss ko hehehehe.

One more thing, my fuel consumption got better, during low power stage for the last 3 months i only average 5.6km/ city driving at best, with lows of 5.2 (v6 engine territory). That is manual computation. Now im getting 13.8L/100km (around 7+km/l). Thats with the trip computer.

[bratski]

sir bratski, talagang sinagad ka ng unit niyo ah... kumbaga isang tulak lang, bangin na... keep us posted sir.

Pag nag knock pa uli ito or bumalik ang low power baka mag hurumentado nako, isasaksak ko na talaga sa baga nila.. sana naman tuloy tuloy na... Wishful thinking na naman. Pero honestly nadala na talaga ako sa hyundai. Im never buying a hyundai again, knowing how poorly they handled my situation. Malas ko lang tatlo hyundai ko ngayon, pero yung 2 hindi naman problematic (knock on wood). May ibang car brand din ako dati na problematic pero hindi ako nahirapan sa dealer at isang pasok lang sa casa ayus agad. Ito lang talaga HARI na since relatively new pa sila (i think 10 years) sa PH market medyo nangangapa pa.

[erj22]

good to hear sir bratski. mag tuloy-tuloy na sana yan

[bratski]

Update again. Gamit ko si accent kanina, while idling in traffic biglang bumagsak ang rpm to the point na halos mamatay na makina. It lasted for about 2-3 seconds then normal idling na uli. Ano na naman kaya ito? Uminit na naman ulo ko. Pero so far no knocking and no low power parin.

[adam_8623]

hi sir bratski, ganyan din nangyari sakin since inupdate itong ecu ng 1.4 mt ko sa hyundai greenhills last dec1.nag fluctuate from 750 rpm to 500 then back to normal within 2 seconds only pag naka on ang a.c. sabi naman sa erod. normal "daw"un kasi nagkakarga ang compressor.pero pag binabaan ko ang thermostat ng a.c nawawala ung rpm fluctuation.

[bratski]

hi sir bratski, ganyan din nangyari sakin since inupdate itong ecu ng 1.4 mt ko sa hyundai greenhills last dec1.nag fluctuate from 750 rpm to 500 then back to normal within 2 seconds only pag naka on ang a.c. sabi naman sa erod. normal "daw"un kasi nagkakarga ang compressor.pero pag binabaan ko ang thermostat ng a.c nawawala ung rpm fluctuation.

Maybe the casa is again pulling our leg. Nangyari din ito sakin a few months ago. So bali 2nd time na counting today, yung rpm ko fluctuated from 750 to 200rpm. Halos mamatay na talaga yung engine and nanginig yung buong car. Kala ko nga titirik na. Ang mahirap nito hindi kayang i-recreate ang scenario kasi sobrang bihira mag manifest, so kahit ipasok ko sa casa hindi rin makikita problema.

[CVT]

Actually hindi ko narin alam kung anong version itong update na ginawa nila. Last week alone naka dalawang pasok ako sa casa, yung unang "remedy" nawala yung low power, pero may knocking uli, the same knocking when i first bought the unit. Then SA at erod called me up for update on my unit and i said bumalik uli knocking. So binalik ko after a few days to "update" or "remedy" the ecu uli, tapos when i got the unit last monday mas lumakas pa hatak but i still hear a faint knocking sound.. I must admit hindi na ganun ka bothersome yung knock niya, kasi kailangan ko ng pakinggan mabuti para marinig ko. Fuel used ko was petron unleaded on both instances.

Itatawag ko na sana sa SA ko today yung very slight knocking and isosoli ko na sana yung unit when out of curiosity naisip kong kargahan ng shell v power, kungbaga what the heck, last year nung kasagsagan ng knocking kahit anong gas ikarga ko and wether kahit anong brand knock galore parin. Tried everything before from petron unleaded,xcs,blaze, then caltex silver,gold, shell unleaded v power. Lahat knock.

Nung unang pinasok ko palang last week na nawala yung low power lumakas na hatak niya, then mas lumakas and more respomsive pa nung second balik, all this on petron unleaded 93 octane fuel, nung nagkarga nako ng shell v power yesterday admittedly hindi lumakas ang hatak, kahit pa 97 octane siya compared sa 93 ng petron unleaded. Pero ang biggest effect lang is nawala yung slight knock.

I never thought i'd say this or rather "type" this about my accent, but i enjoyed driving it for the first time since buying it 8 months ago, i will conduct further tests and would probably use it for the rest of the week just to be sure na wala talagang knock or bumalik ang low power, lets just hope na hindi short-lived itong current bliss ko hehehehe.

One more thing, my fuel consumption got better, during low power stage for the last 3 months i only average 5.6km/ city driving at best, with lows of 5.2 (v6 engine territory). That is manual computation. Now im getting 13.8L/100km (around 7+km/l). Thats with the trip computer.

Shell V Power bro is way too expensive vs. Petron Unleaded. You may want to 'experiment' on Petron XCS which is being 'marketed' as a 95 Octane fuel.

But at the Km/L performance you're getting(is it being compared on the same petrol brand/variant?), it looks like is paying off by itself... Because I think that the utility(Km/L gauge) in the trip meter is your performance for the last 10 or so kilometers of driving(at least that is my understanding on our Honda City- another brand with the same feature)....

14.8K:fone:

[adam_8623]

[QUOTE=bratski;1870351]Maybe the casa is again pulling our leg. Nangyari din ito sakin a few months ago. So bali 2nd time na counting today, yung rpm ko fluctuated from 750 to 200rpm. Halos mamatay na talaga yung engine and nanginig yung buong car. Kala ko nga titirik na. Ang mahirap nito hindi kayang i-recreate ang scenario kasi sobrang bihira mag manifest, so kahit ipasok ko sa casa hindi rin makikita problema


ganun na nga kaya minsan nakakahiya sa casa pag wla cla makita sa nireport ko eh,

[bratski]

Shell V Power bro is way too expensive vs. Petron Unleaded. You may want to 'experiment' on Petron XCS which is being 'marketed' as a 95 Octane fuel.

But at the Km/L performance you're getting(is it being compared on the same petrol brand/variant?), it looks like is paying off by itself... Because I think that the utility(Km/L gauge) in the trip meter is your performance for the last 10 or so kilometers of driving(at least that is my understanding on our Honda City- another brand with the same feature)....

14.8K:fone:

Petron xcs is what i plan to gas up with next, anyway i just put 500 pesos worth of v power just for testing. Before when the engine knock is at its worst, even petron blaze 100 octane couldnt cure the knocking. Thats about 60 pesos per liter. I've already used up the 500 worth of shell v power fuel. Tomorrow ill gas up with a full tank worth of xcs and see what happens.

[erj22]

langya, bago na namang issue ba sir bratksi? nakaka panic kahit papano yung bababa ang rpm...

[andretti]

Kaya nga di nako nag good luck kay bratski, e laging bad luck e.
Ang tyaga mo bratski with all this faults on your Accent, at 8mos and counting pa yan...

Sabi naman ng Hyundai 5 years warranty naman daw kaya don't worry...
No.1 candidate ang unit mo as lemon unit actually.

[andretti]

sorry double post

[mike18]

ganyan din problema ng elantra ko ngayon, magfla-fluctuate rpm below 500 tapos babalik sa normal, minsan di na bumabalik at namamatay makina na lang yung engine. sa ecu kaya problema o fuel system ng sasakyan?