Nissan Sunny FB15 E/G Stall

2001 Nissan Sunny FB15 Engine Model QG15DE

Situation
Engine started but stoped immidiately without pressing accelrator.

Cause
Faulty Engine computer and AAC valve.

Maintenance
Diagnosis was properly.
 I took off the AAC valve and checked it.
The value of resistance was out of average.(27-33ohm)
I exchanged new AAC valve. but it didn't work well.
After that I took off the engine computer
and found that platform had been burning.
Then I exchanged new engine computer.
Finaly It worked properly.

Toyota Mark2 GX110 Check Lamp Lit

20001 Toyota Mark2 GX110 Engine Model 1G

Situation
Engine check lamp illuminated.
The engine was hunting a liittle at an idle.

Cause
Faulty throttle position sensor.

Maintenance
Diagnosis noticed that cord P0120 which meant throttle sensor systems.
I used a service manual and confirmed by data monitor.
Then I checked throttle sensor of accelration angle and idling switch.
The throttle sensor was 0% (Faulty)
The idling switch was off (faulty)
After that I took off the throttle position sensor and checked it.
It was disconnecting at ON.(Faulty)
Then I judged that it had been faulty and exchanged new throttle position sensor.

Nissan Figaro FK10 Coolant Leakage

1991 Nissan Figaro FK10 Engine Model MA10

Situation
Coolant leakage in the timing belt cover.

Cause
Coolant leakage from the water pump and a bolt of the tensioner pulley.

Maintenance
I took off timing belt cover and timing belt and checked leakage from the water pump.
Then I exchaged new water pump and tested water pressure.
After that I found leakage between the timing belt and tensioner pulley.
It came from the bolt of tensioner pulley.
Then I changed a new bolt using lock sealing.

Toyota Progres JCG10 VSC Lamp Lit

1999 Toyota Progres JCG10 Engine Model 1JZ

Situation
VSC warning light and TRC OFF lamp illuminated.

Cause
Faulty Steering Sensor.

Maintenance
The engine run smoothly.
When I turned the steering wheel until the end, warning lapms illuminated.
Diagnosis noticed cord31 which meant faulty of the steering sensor.
I judged that the steering sensor was faulty.
Then I exchanged new steering sensor.
After that it worked properly.

Mitsubishi GTO 3000GT Z15A Hunting on Acceleration

1991 Mitsubishi GTO Z15A Engine Model 6G72

Situation
When I pressed harder on the accelrator ,The engine speed did not get high smoothly with hunting,
when I shifted in seconds from 3000rpm. Idles was properly.

Cause
Faulty Ignition coils.

Maintenance
It did not work properly after I cheked spark plugs , HT leads ,air flow meter and air cleaner.
Althogh I cleaned the throttle body.
Then I checked the ignition coils and found that there were cracks on the base of coils and leaked from it.
I exchanged new ignition coils.
After that the engine speed got high smoothly.

Toyota Hilux Surf RZN185 Idles Erratically

2000 Toyota Hilux Surf RZN185W Engine Model 3RZ-FE

Situation
The engine did not run smoothly at an idle.

Cause
Faulty Air flow Meter

Maintenance
Diagnosis noticed that card 31 it was faulty of the air flow meter.
Then I took off it and cleaned. but It worked worse than befor.
After that I judged that the air flow meter was faulty.
The engine run smoothly after I changed a new air flow meter.

Toyota Chaser GX100 E/G Stall

1997 Toyota Chaser GX100 Engine Model 1G-FE

Situation
The engine stalled at an idle.

Cause
Faulty ISCV (idling speed control valve).

Maintenance
Diagnosis and fuel compression were properly.
The engine speed got high smoothly.
I thought that ISCV was faulty and checked it.
It worked properly but the head of the ISCV was dirty with sludge.
Then I cleaned it .
After that It worked properly.