A32 - Coil Dying? How to Know Which One?

[ctk22]

Hi all,

My A32 30GV recently gave some weird behavior. Before this, during idling, the engine will jerk slightly (do u call this misfiring?), just like the coil failing symptoms that some of our fellows posted here before.

Recently, the jerking become more serious which it can be felt when cruising. The car felt like some force is holding it back slightly, just feeling like you step on the brake slightly while stepping on the fuel pedal. So, I guess the coil will die off very soon.

1. Will this symptom brings long term effect to the engine, if I continue to drive on?
2. How to find out which of the coil is failing?
3. Will plugging in the diagnostic tools help to figure out which exact coil is failing?
4. How much do i have to budget for the coil replacement?

Thanx in advance!

 

[ongteckweng]

usually if u go to TC, they will advice u to change all 6 coils. easier for them. u can try getting them from chopshop n test them one by one if u r not keen on changing the whole lot. if not mistaken, brand new is ard rm400+..chop shop rm60+

 

[hanslin]

you can try :
1: start the engine with the coil cover off and coil unscrew!
2: start with the 1st coil, :slug:slowly leave up the coil and u can see the spark jumping to the plug!
3: if there is coil problem or dying u should not see spark or weakest one out of 6 coil!
4: just find out the weakest one!

hope this help!

dont try on high rpm if not u will start cursing me!!!


By the way..... HAPPY NEW YEAR

 

[ctk22]

hi hanslin,

pls enlighten me, I have no idea where the location of coil is...

 

[ctk22]

searched online, i think i know which one is coil

 

[hanslin]

the coil will be under the nissan logo cover!!!
or where the plug is, the coil just on top it!!!!
example: on 6inline!
sorry that i dont have the v6 pic with me!

 

[sb3]

What hanslin suggest is a good idea but dont leave up the coil too long (very brief) or you will confuse the ecu, O2 sensor and shorten the life of the electrics. Its like the dog chasing its own tail.

Good Luck.

BTW 1 coil at Spare parts shop around rm160-00 to rm200-00. Brand ? Hanshin or MMC. Thats rights, Mitsubishi made coils for our fatties.

 

[ctk22]

any recommended shops for brand new ones or 2nd one chop shop?

 

[hanslin]

tq to make it more detail!
A32 - Coil Dying? How to Know Which One?

 

[ctk22]

Is ignition coil for VQ20 and VQ30 the same?

 

[sb3]

Please check and confirm whether it is the coil/s b4 committing as the coils are not cheap (for me at least) . Sometimes the problem lies elsewhere. The "Nissan specialist" will recommend you to replace all six of them, whilst if you are at under the tree workshop , they would only ask you to change the faulty unit. Its best to have a power balance test for all the coils during diagnostics scans in confirming the power variance between the firing coils. At times it might be more than 2 coils at fault. Its sounds silly but at times the misfiring can jump around between a few cylinders (ie; cycl 1, 5 ,2,etc).So the rule of thumb , check properly 1st.

Btw , if you are staying in PJ there one authorised Nissan dealer @ Sea Park (opposite Affin Bank). It seems they are supplying parts to Section 13 workshop/service centre.

SB3.

 

[ctk22]

hi sb3,
thanx for your detailed advice

 

[sb3]

hi sb3,
thanx for your detailed advice

Hey no prob bro ! Where do you live ? I might have some used coils for sale if you want. We can test it together if its not the coil problem. No need to buy lah.. How is it going? Have you found the bug already? Let us know if you have nailed problem.

Cheers .

SB3

 

[seizai]

Hey no prob bro ! Where do you live ? I might have some used coils for sale if you want. We can test it together if its not the coil problem. No need to buy lah.. How is it going? Have you found the bug already? Let us know if you have nailed problem.

Cheers .

SB3

u keep spare parts also

 

[sb3]

A little bit lah..

 

[seizai]

the current from plug to plug oil is AC or DC?

 

[sb3]

the current from plug to plug oil is AC or DC?

 

[Yu911]

me too have this problem b4, only change 1 coil, every thing done.
ctk22, is ur problem fix?

 

[ctk22]

my problem has somehow minimised.

Actually, the problem that causing the jerkiness is the air filter box leaking!

U see, there's a small hose running from the air filter box to the "fuel distributor" (correct my terms if wrong). The PVC connector protrusion out of air filter box was torn during my previous air cond services (change piping). The mech just use some bitumen to seal it back. During high speed cruising for long hours, i think the some void developed at the torn part, and therefore air went in. This affected the smoothness of the engine, and as the void develops, the engine jerkiness become worse.

U can try to take off the pipe in idling. The engine will die off immediately.

It's the leakage on the torn connector that's causing the problem, not the coil.

 

[sb3]

Where is the fuel distributor located?