Spark plug wire service life
- Thread starter Doshu
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BrianSD_42
New member
100k miles at least.
Doshu
New member
spark plug wire update
So, just incase anyone is having this issue. Got the infamous P0302 code, and was told by my mechanic that the truck just needed wires since they were from 2005. :gossip:
So, I did alittle diag myself because I felt the misfire in 2nd cylinder was more likely the coil pack on the 5th cylinder throwing off the injector on number 2.
Spent ~80 and changed the 5th cyl coil pack, spend ~30 changing spark plugs.
Truck ran great after this. :high5:
Went for a camping trip this weekend and after about 15-20 miles of highway driving...the truck gave me the same symptoms I originally had before changing the above items. So, of course ..in route to the mountain, stopped by the stealership and gave away 103 dollars to them for a whole new set of sumitomo wires... which equaled less fun on the camping trip.
Installed wires in less than 10 mins. Truck ran great until 15 mins later..SAME SYMPTOMS. :ybrick:
Now after more research...I'm learning that injectors are an issue for these trucks???? This is exactly why I'd rather deal with a carb and mechanical issues rather than electrical computerized malfunctions.
out:
The saga continues. Good news..the truck limped us up to ~11k feet through rough terrain and provided a warm place to sleep with the seats removed.
Time to tear into the intake and chk for a faulty injector.
So, just incase anyone is having this issue. Got the infamous P0302 code, and was told by my mechanic that the truck just needed wires since they were from 2005. :gossip:
So, I did alittle diag myself because I felt the misfire in 2nd cylinder was more likely the coil pack on the 5th cylinder throwing off the injector on number 2.
Spent ~80 and changed the 5th cyl coil pack, spend ~30 changing spark plugs.
Truck ran great after this. :high5:
Went for a camping trip this weekend and after about 15-20 miles of highway driving...the truck gave me the same symptoms I originally had before changing the above items. So, of course ..in route to the mountain, stopped by the stealership and gave away 103 dollars to them for a whole new set of sumitomo wires... which equaled less fun on the camping trip.
Installed wires in less than 10 mins. Truck ran great until 15 mins later..SAME SYMPTOMS. :ybrick:
Now after more research...I'm learning that injectors are an issue for these trucks???? This is exactly why I'd rather deal with a carb and mechanical issues rather than electrical computerized malfunctions.
out:The saga continues. Good news..the truck limped us up to ~11k feet through rough terrain and provided a warm place to sleep with the seats removed.
Time to tear into the intake and chk for a faulty injector.
Last edited:
Doshu
New member
The code I pulled was the p0302. However, I read somewhere that an easy way to check the wires is just to look for arcs in the wires while the truck is running.
My originals had Sumitomo stamped on them with the date next to it. After I get to these injectors, I hope to have the same experience..."270k and running fine".
JohnsD90
New member
Old wires I believe have a lot of resistance in them and the spark isn't as strong, someone would have to confirm this as I'm not 100% sure.
TheDurk
Elite Member
You can check the resistance of the plug wires. Per the FSM, spec is 25kΩ or less.
http://tacoma.site40.net/4Runner_96-02_Repair&Wiring/techinfo.toyota.com/ileaf/02toyrm/02toypdf/02rmsour/2002/024runne/ig5vzfe/ignsy/ovi.pdf
Greg_Canada
New member
So, just incase anyone is having this issue. Got the infamous P0302 code, and was told by my mechanic that the truck just needed wires since they were from 2005. :gossip:
So, I did alittle diag myself because I felt the misfire in 2nd cylinder was more likely the coil pack on the 5th cylinder throwing off the injector on number 2.
Spent ~80 and changed the 5th cyl coil pack, spend ~30 changing spark plugs.
Truck ran great after this. :high5:
Went for a camping trip this weekend and after about 15-20 miles of highway driving...the truck gave me the same symptoms I originally had before changing the above items. So, of course ..in route to the mountain, stopped by the stealership and gave away 103 dollars to them for a whole new set of sumitomo wires... which equaled less fun on the camping trip.
Installed wires in less than 10 mins. Truck ran great until 15 mins later..SAME SYMPTOMS. :ybrick:
Now after more research...I'm learning that injectors are an issue for these trucks???? This is exactly why I'd rather deal with a carb and mechanical issues rather than electrical computerized malfunctions.
The saga continues. Good news..the truck limped us up to ~11k feet through rough terrain and provided a warm place to sleep with the seats removed.
Time to tear into the intake and chk for a faulty injector.
$60 bucks to get injectors rebuilt... why are you scared of EFI?
Doshu
New member
EFI seems less user friendly to me. If I was out on a trail somewhere and had this problem...nothing I could have done short of limping back and hope that nothing else went wrong as a result of the original problem which I haven't yet figured out.
My old 22r with the carb is more adjustable using simple tools. I prefer old mechanical technology to this electronic stuff.
I love my runner, but while this EFI thing has kept the runner sitting..I've had to rely the old carb to carry the family to the store, work, etc. Both have their pros and cons.
Greg_Canada
New member
I'm loving OBD2... when my o2 sensors went out my ECU told me. On my gf's honda, when the cam sensor went out, the ECU told me. All fixed lickety-split.
Carb you would have no idea, and get worse MPG at the same time.
I'm all for simplicity, but for me carbs are not simple, they are something that always needs to be messed with and is never accurate.
TheDurk
Elite Member
The Zenith on my 1966 Farmall tractor (still original and last serviced in 1995) is a marvel of simplicity and reliability. The Solex on my mother's 1974 Mercedes was a complex, temperamental beast as was the Weber on my 1973 Audi. I am glad those last two are gone from my life, although we kept that Merc alive for 28 years. Carbs really are unable to keep up with the modern requirements for efficiency and low pollution without adding serious complexity. My Mercedes specialist simply refused to work on that Solex. I don't miss them in my life (except for the Zenith which just keeps on going).
Doshu
New member
My Subaru with 238000 miles has the original carb, drivetrain and engine. It takes about 12 seconds to get to 60 with a strong wind helping it and the radio is toast...yet it starts without fail. Very few electronics on it. Similar story with my old fj60 except mpg was about 20mpg less...
