Check the splice joints in the harness that wraps around the manifold, they used to corrode. Was a Holden tech for many years common on this engine. With age will also cause o2 sensor and fuel trim problems. All depends which splice joint is gone in the harness. Hopefully this helps someone.
Update it has been 2 weeks so far since I spliced in the new connector & the Check Engine light is still off!!! I believe this will help some of you out there!!!! Good Luck!!!!!
I did this repair on New Years Day 2018 & the check engine light still has stayed off the entire time..... and now it’s been almost 1 yr!!!! Good luck folks.....
Update..... it’s been several months now since I cut&spliced the pig tail for the coil connection & it has been running great with no check engine code on at all !!!!!!!
TO THOSE WHO NEED [Holden Rodeo 3.5 V6 RA 2x4 2004] We have only purchased this lil beauty recently and everything has been fine When we got low on fuel the "Check Engine" light came on and it was not solved by any of these (not that these dont work, they just didn't work for me sadly) Hooked it up to the "Tech2" diagnostic machine Turned out to be the O2 sensor being triggered by emissions build-up due to spark plugs being the wrong size and requires new ones My mechanic was laughing at the fact that the work the so called "roadworthy mechanic" did do looked as if it was done by someone work little to no experience even though we have an invoice for all work done Simple circuits were not properly done Used single filiments bulbs for brake lights instead of double filiments (causes the brakes lights to work incorrectly in general and worse whilst headlights are on) Called the RWC (the roadworthy mechanic) told him everything, he was insulted by the fact I had called him out on the fact he did a bad job
Alright is this just causing a thrown code or making it run really poorly. Mine is running on 10% power and making very bad noises, AND IS ONLY THROWING THIS MISFIRE CODE!!!?!?
Check the splice joints in the harness that wraps around the manifold, they used to corrode. Was a Holden tech for many years common on this engine. With age will also cause o2 sensor and fuel trim problems. All depends which splice joint is gone in the harness. Hopefully this helps someone.
Update it has been 2 weeks so far since I spliced in the new connector & the Check Engine light is still off!!! I believe this will help some of you out there!!!! Good Luck!!!!!
Thank you so much for the great info, I will check those out because I am having that code and can't figure out what is the problem with my Rodeo.
👍
I did this repair on New Years Day 2018 & the check engine light still has stayed off the entire time..... and now it’s been almost 1 yr!!!! Good luck folks.....
Having the same issue with a 2004 Rodeo
Hi James, I have similar drama except cyl 2,4 and 6 are randomly misfiring, so maybe I have 3 crappy plugs.
@@StarlightWorkshop0z my mate ling long got da same problem ai.
@@thomasskilton2696 ling long tick tick rattle pop
You might have bad plugs Or bad coils, make sure the pigtail connector looks good, it's been 2-1/2 years and still no more mis fires on my Rodeo
Update..... it’s been several months now since I cut&spliced the pig tail for the coil connection & it has been running great with no check engine code on at all !!!!!!!
james gatch going to give this a try, i have one that has a random.misfire. and then after it pinpointed to cykinder 4. And went back to a random miss
Did it help your cyl 4 misfire
Was it noticeable misfire, or just the check engine light.?
What Year is that one ?
TO THOSE WHO NEED
[Holden Rodeo 3.5 V6 RA 2x4 2004]
We have only purchased this lil beauty recently and everything has been fine
When we got low on fuel the "Check Engine" light came on and it was not solved by any of these (not that these dont work, they just didn't work for me sadly)
Hooked it up to the "Tech2" diagnostic machine
Turned out to be the O2 sensor being triggered by emissions build-up due to spark plugs being the wrong size and requires new ones
My mechanic was laughing at the fact that the work the so called "roadworthy mechanic" did do looked as if it was done by someone work little to no experience even though we have an invoice for all work done
Simple circuits were not properly done
Used single filiments bulbs for brake lights instead of double filiments (causes the brakes lights to work incorrectly in general and worse whilst headlights are on)
Called the RWC (the roadworthy mechanic) told him everything, he was insulted by the fact I had called him out on the fact he did a bad job
Alright is this just causing a thrown code or making it run really poorly. Mine is running on 10% power and making very bad noises, AND IS ONLY THROWING THIS MISFIRE CODE!!!?!?
PO300 CODE ON 99 RODEO , WHAT DI I NEED TO DO??
Check all of your pigtail connection check spark plugs you
Hey thanks
I will ck it out!!!!!!