Dechlan Tutty
Member
- Joined
- Mar 1, 2020
- Messages
- 54
- Reaction score
- 14
- Points
- 8
- Age
- 22
- Location
- East Gippsland, VIC
- Members Ride
- '04 VZ SV6 - Auto (5 sp.)
Hi everyone,
I've looked through previous posts and can't find a circumstance that lines up exactly with what I'm experiencing, at least in about half an hour of reading.
Anyway, about 2 months ago my car started one time after about 100 km of highway driving and being left for 2 or so hours, was fine for 5 minutes, got to temp and then had a hissy fit and lost all 1 bank (spark, fuel or both, not sure). Anyway, parked it up at home, luckily downhill most the way, opened bonnet and it had fried coil #3 (middle coil on drivers side, pretty sure that #3 Cyl.)
I replaced the coil, called an auto elec, he just replaced a fuse and all was well until the other day. A slight miss/hesitation has returned but only between 1900-2000 revs when the auto box is "locked up" about 90-105 km/h it ends up being. When you roll into the throttle more than say 20-25% it jumps every half second or so like a misfire, but isn't consistently every power stroke. When it unlocks and kicks down a gear, or you chuck it into 4th manually, problem goes away.
I have a cheapo OBD scan tool, enough to read codes and I use Torque app on my phone to see all engine data. The only thing I notice when it happens is the spark timing goes from 18 or so degrees advance to 0, but never throws a code.
The car's done 210,900 km, I changed the oil about 500 k's ago (I do it every 5-6k), and I'm planning on doing the auto's fluid in the next few days. Not sure where to go with diagnosis from here. It's probably due for a set of timing chains soon, but no other signs they might be gone, is this them showing their age or is it something I'm missing?
Thanks for the help in advance, I'll provide more info if you need. Cheers, Dechlan
I've looked through previous posts and can't find a circumstance that lines up exactly with what I'm experiencing, at least in about half an hour of reading.
Anyway, about 2 months ago my car started one time after about 100 km of highway driving and being left for 2 or so hours, was fine for 5 minutes, got to temp and then had a hissy fit and lost all 1 bank (spark, fuel or both, not sure). Anyway, parked it up at home, luckily downhill most the way, opened bonnet and it had fried coil #3 (middle coil on drivers side, pretty sure that #3 Cyl.)
I replaced the coil, called an auto elec, he just replaced a fuse and all was well until the other day. A slight miss/hesitation has returned but only between 1900-2000 revs when the auto box is "locked up" about 90-105 km/h it ends up being. When you roll into the throttle more than say 20-25% it jumps every half second or so like a misfire, but isn't consistently every power stroke. When it unlocks and kicks down a gear, or you chuck it into 4th manually, problem goes away.
I have a cheapo OBD scan tool, enough to read codes and I use Torque app on my phone to see all engine data. The only thing I notice when it happens is the spark timing goes from 18 or so degrees advance to 0, but never throws a code.
The car's done 210,900 km, I changed the oil about 500 k's ago (I do it every 5-6k), and I'm planning on doing the auto's fluid in the next few days. Not sure where to go with diagnosis from here. It's probably due for a set of timing chains soon, but no other signs they might be gone, is this them showing their age or is it something I'm missing?
Thanks for the help in advance, I'll provide more info if you need. Cheers, Dechlan