Due To Junction Block Engine Stalling

Model : Hyundai Accent (MC)

Year Model: 2009

Mileage: 40123km

Displacement: 1400cc

Fuel: Gasoline

T/A: Auto

Subject: Junction Block Defective Can Cause Engine Stalling.

1) Condition:

1. Engine Stalling during driving and impossible to restart the engine for 5 minutes.

2) Cause:

1. Poor contact of the engine compartment junction block.

3) Diagnosis

1. Scan tool check
   = Diagnostic trouble code = B1112(Airbag system) Battery voltage is too low.
2. Check the fuel pump and the engine control relay – No power supply.
3. Check the engine compartment junction block.
   = Engine stalling is reproduced when touching the junction block and wiring harness
   = Poor contact of the joint connector number 5 in the junction block.

4) Repair Guides:

1. Repair the engine junction block connector.

More Study

P0016 Crankshaft and Camshaft correletion.

= The cvvt ( continously variable valve timing) system is installed to the chain sprocket of the intake camshaft. this system controls the intake camshaft to provide the optimal valve timing for every driving condition. The ECM controls the oil control valve (OCV), based from the signal output from mass air flow, throttle position and engine coolant temperature. The CVVT controller regulates the intake camshaft angle

Clicking Noise From Sunroof Sonata YF?

Model: Hyundai Sonata YF
Year Model: 2011
Displacement: 2400cc
Mileage: 10247km
Fuel: Gasoline
Subject: Clicking Noise From Sunroof.
1) Condition:

1. Unusual clicking noise from sunroof while driving.

2) Cause:

• Due to Sunroof linkage.

3) Diagnosis:

1. Road test to probe if the problem occurs = Noise occurs.
   
2. Pull out the Sunroof and check some linkage loosened.

4) Repair Guide:

• Repair and Retightened all parts

more study

Engine Trouble Shooting Noise

Knocking noise usually from internal parts of engine.but this knocking sound is different from normal noise.

Model: Grandeur (XG)

Displacement: 3000cc

Year Model: 2003

Mileage: 128354km

Fuel: Gasoline

T/A : Auto

1) Condition:

1. Engine noise in cold condition or accelerating.

2) Cause:

• Damage Damper pulley.

3) Diagnosis:

1. The tension of Drive belt is normal.
2. The symptom disappears after dismounting the drive belt.
3. Damper pulley  vibrates after re-installing the drive belt.= Pulley is Cracked.

4) Repair Guide:

• Replace the Damper pulley

more study

Abnormal Vibrating Noise Due to Accelerator Cable.

Model: Hyundai Grandeur (XG)

Year Model: 2000

Mileage: 130276km

Displacement: 2500cc

Fuel: Gasoline

T/A: Auto

1) Condition:

• Noise is Heard from the instrument panel and heater duct when the RPM is 1,500~1,800.

2) Cause:

1. The trap of power steering high- pressure hose and accelerator cable are tightened too hard.

3) Diagnosis:

1. Check the instrument panel and the heater area – Trouble not found.
2. Check the engine room area.
   = The strap of the power steering high-pressure hose and the accelerator cable are tightened too hard
   = The noise travels through the accelerator cable into instrument panel.
   = After loosening the strap, the symptom has disappeared.

4) Repair Guide:

• Loosen the Strap of the accelerator cable and the high pressure hose.

more trouble study

Car Stereo Can Affect Hazard and Signal Light?

Field Case Study

Model:Hyundai Elantra (HD)

Year Model: 2009

Mileage: 79251km

Displacement: 1600cc

T/A: All

Fuel: Gasoline

1) Condition:

1. Intermittent Turn and Signal light not Working.

2) Cause:

1. Due to the hazard and signal light fuse busted
2. Overheating Car Stereo.

3) Diagnosis:

1. Scan toll check = No trouble code found.
2. Check the fuse and relay from engine compartment fuse box = Hazard fuse busted (Replace fuse)
3. Check the fuse and relay from the passenger fuse box = signal or turn light fuse busted(Replace fuse)
   
   = Test the car with all lights on to see if the problem still occurs.After an hour = Ok All are working
   = Then  all lights switch off except signal light, then the Car stereo switch On After a minute suddenly the signal light block out.
4. Check for the Electrical Trouble Manual of Hazard and Signal light and Car Stereo = there is no wire connected to the Car stereo, but their only joint together on the electronically passenger fuse box.
5. Check for the diagram of Car stereo and check the wire connection = the power memory wire is seems like burnt from the passenger fuse box to the stereo terminal.
6. visually check the fuse box, power memory terminal corroded.
7. Check for wire shorted = OK all wire good.
8. Found out that the Car stereo overheating.

4) Repair Guide

1. Replace passenger fuse box and Car Stereo.

More Field Study

Intermittent Knocking Noise On engine Idling

 

Model: Sonata (NF)

Year model: 2006

Displacement: 2400cc

Mileage: 124803 km

Fuel: Gasoline

A/T: manual

1) Condition:

1. engine knocking noise on starting.
2. intermittent knocking noise on engine idling

2) Cause:

1. Clutch flywheel

3) Diagnosis:

= Intermittent knocking noise due to the clutch flywheel excessive clearance.this noise the as engine knocking noise but the only different is engine is running then the problem occurs, push the clutch the problem immediately disappear.

4) Repair Guide:

• pull down manual tramission and replace flywheel.

more info