Misfiring V6

JG
JGC

Misfiring V6

Fri Mar 24, 2017 9:34 pm

Good day fellow Mitsubishi lovers.
My 2000 blister fender 3500 V6 developed a problem today on my way home from work. About 10 min into my journey she started coughing and spluttering with the engine light on. I did manage to get home and packed the car away. A couple of hours later I started her again where she fired straight up sounding normal. After a few minutes as the temp gauge starts moving she started coughing and spluttering then about 30 seconds later the engine management light comes on and the misfiring gets a lot worse. Any advise?
The spark plugs have done about 3000km, I am leaning more towards a air flow meter problem, but how I could I diagnose the problem? Any advice ideas would be appreciated.


Fo
Forest Fab

Re: Misfiring V6

Wed Mar 29, 2017 8:13 am

This is not the GDi engine, right?

On my 97 Paj, I had similar issues with coil packs wiring. Since you changed the spark plugs recently, I'd lean towards this.
Either a loose or damaged plug lead, or the thin wires from the ECU to the coil packs. The insulation becomes brittle with age, and when things heat up, you could end up with a partially broken wire or connection that doesn't contact anymore.
On my older car the engine light never came on though.

There are only 2 misfire sources on a petrol engine, fuel or spark, air only influencing fuelling parameters really. If it's not the sparks, it's the fuel, or a combination of both.

Good luck, keep us posted!
Fab.
JG
JGC

Re: Misfiring V6

Sun Apr 09, 2017 6:50 am

Thanks for the response.
My mechanic has determined it's the crank shaft sensor. The agents are the only people who have this part (so far) at a heavy price (R2500). I will look this week to see if I can find one somewhere else and hopefully at a better rate.
smittie
Country: South Africa
Vehicle: Pajero 3500 lwb
Posts: 3
Joined: Mon May 13, 2013 6:35 pm

Re: Misfiring V6

Sun Apr 09, 2017 4:36 pm

Hallo
Probeer Master Parts . Ek het een by hulle gekry in November. Vra vir Dawie sy nr is 082 336 9519
Johan
JG
JGC

Re: Misfiring V6

Sun Apr 09, 2017 6:27 pm

Thanks very much, I will give him a shout this week.
Is it something that's quite easy to change myself? I'm not even sure where it's located on the engine. Any advice?
Thanks
JG
JGC

Re: Misfiring V6

Sun Apr 09, 2017 6:27 pm

Thanks very much, I will give him a shout this week.
Is it something that's quite easy to change myself? I'm not even sure where it's located on the engine. Any advice?
Thanks
PajeroNewBy
Country: South Africa
Vehicle: 1997 Mitsubishi Pajero 3.5v6 LWB
Posts: 9
Joined: Mon Dec 23, 2019 9:40 pm

Re: Misfiring V6

Mon Jan 13, 2020 5:25 pm

Hi.
Could you solve your problem.
I have a slight misfire.

Thanks

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