Rm8k Wira & Jazz GK5 ownership experience-A long way to go

[KHNG940413]

Check your wiring for the sensors leading back to the ecu. If it aint the wiring, it has to be the ecu. Sensors relay information back to the ecu. It's the ecu that makes the decisions.

They had unplug all the socket and wait for an hour(dunno why) and connet them back. I let it idling 30minute while aircond open and it didn't went dead.

Now I am like driving a time bomb. Dunno when the car will went dead again. Hahahahahahaha

 

[parakey]

They had unplug all the socket and wait for an hour(dunno why) and connet them back.

He He . .sounds like that's the limit of their diagnostic skills. Unplug, wait a long time, replug

 

[gunnerzz]

If possible just borrow 2 grounding cable and install at engine block and firewall back to battery.

I am thinking its bad grounding. Different driving situation will have different current+grounding demand. During idle, a bad grounding wont pose much problem...on cars laden with electronics, revving the engine with bad grounding will show multiple error code.

 

[parakey]

If possible just borrow 2 grounding cable and install at engine block and firewall back to battery.

I am thinking its bad grounding. Different driving situation will have different current+grounding demand. During idle, a bad grounding wont pose much problem...on cars laden with electronics, revving the engine with bad grounding will show multiple error code.

With regards to bad grounding, wont that show up more during starting when a large current is drawn? If grounding to engine was suspect, it cant possibly pass through enough amperage to start.

Not totally ruling out grounding. If ecu has bad ground to chassis, then it may cause issues. But that's related to chassis ground and not the engine side

 

[gunnerzz]

With regards to bad grounding, wont that show up more during starting when a large current is drawn? If grounding to engine was suspect, it cant possibly pass through enough amperage to start.

Not totally ruling out grounding. If ecu has bad ground to chassis, then it may cause issues. But that's related to chassis ground and not the engine side

yup it should show up during starting.
since the car is driven over rough surface and wiring is old, possible shaking+ratting damaged of loosen some crimping and caused oxidation.

 

[parakey]

After changing both cam & crank sensor the car start nicely and didn't mati agn

You replaced 2 sensors? Where exactly is the camshaft sensor located on the wira vdo? Did you take any pics? Please share.

 

[vr2turbo]

With regards to bad grounding, wont that show up more during starting when a large current is drawn? If grounding to engine was suspect, it cant possibly pass through enough amperage to start.

Not totally ruling out grounding. If ecu has bad ground to chassis, then it may cause issues. But that's related to chassis ground and not the engine side

Grounding sometimes hard to understand. Like got one time was at mechanic place, he was doing an old car. Change rear brake light bulb, step on brakes, ok. Turn on signal the brake light gone. Finally he add a thin ground wire from tail light to car body, everything running fine.......lol

 

[KHNG940413]

You replaced 2 sensors? Where exactly is the camshaft sensor located on the wira vdo? Did you take any pics? Please share.

The 1st one is cam sensor is at the distributor top there

The 2nd one is crank locate at the bottom one

 

[KHNG940413]

Grounding sometimes hard to understand. Like got one time was at mechanic place, he was doing an old car. Change rear brake light bulb, step on brakes, ok. Turn on signal the brake light gone. Finally he add a thin ground wire from tail light to car body, everything running fine.......lol

Mayb I need to find someone know about grounding to help me in this one. Hahhahaha

 

[parakey]

Grounding sometimes hard to understand. Like got one time was at mechanic place, he was doing an old car. Change rear brake light bulb, step on brakes, ok. Turn on signal the brake light gone. Finally he add a thin ground wire from tail light to car body, everything running fine.......lol

The ground point at rear trunk is probably rusted. Has enough to power the signal light but not the brake light.

 

[parakey]

The 1st one is cam sensor is at the distributor top there

That's similar to my 4G93 but mine has crank sensor there as well.

So, you dont have a picture of the crank sensor at it's location near the crank pulley. Is it inside or outside of the timing case?

 

[sanekit]

Mayb I need to find someone know about grounding to help me in this one. Hahhahaha

i can recommend u my mech, but he's in shah alam.

 

[KHNG940413]

That's similar to my 4G93 but mine has crank sensor there as well.

So, you dont have a picture of the crank sensor at it's location near the crank pulley. Is it inside or outside of the timing case?

Yup,the crank sensor is locate near the cranj pulley. Vdo have a gear shape thingy attached to the crank pulley.

 

[KHNG940413]

i can recommend u my mech, but he's in shah alam.

Wah jauh lahhhh.hahahahahaha

 

[parakey]

Yup,the crank sensor is locate near the cranj pulley. Vdo have a gear shape thingy attached to the crank pulley.

Is it inside or outside of the timing cover?