Quote:
Originally Posted by strat61caster
I believe it means the car is slowing you down either via brakes on the wheels due to wheel slip or it's pulling throttle/timing out of the engine to protect it.
With regards to your earlier post, did you ever actually put new coil packs in or just swap them around?
Checking the harness is a good thing to do if new coil packs don't alleviate the problem, but once a coilpack is faulty it's faulty, it doesn't magically get better from what I can tell.
Put two new ones in a month ago and it feels like the car is much happier than before, could just be placebo but I'm optimistic that the latest part numbers exist to help prevent this from happening.
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Haven't put new coils in yet. But I think I understand the problem inducing criteria much better:
Problem (new readers) P0351 mil. car is stock (2013 early model VIn is 1800 problem started at 20K Km's, now at 101K) performed coil swapped 3 or so times, problem goes away for 15K-20k, new plugs at 96k.
1) Car needs to be warmed up (10-20 mins of driving) just cruising
2) ambient temps needs to be above 25C degrees
3) initially it started as problem when shifting at High RPMs and load 1-2 gear, now comes when downshifting to 3-4 gear and accelerating hard. Now comes in when shifting into 4th with full throttle
traction light flashes as mil is already on.....most likely pulling timing, my guess (doesn't abruptly slow down or feel like it stutters)
What I have done so far today trying to figure this out.
1) Pulled the coil, physically inspected it for the resin pulling up - looks ok, minor corrosion in the plug, seems unlikely
2) checked the connector for damage -ok
3) checked the wires for voltage and continuity as per the electrical service manual - seems ok
Likely cause in my opinion is heat induced resistance increase from the header below the cylinder or the cylinder head itself. The concensus on here is it's from the heat.....but nice to know they've updated the parts. Even if I can't get them warrantied I'm going to buy new ones anyways, but considering it doesn't change from cylinder to cylinder it's leading me to believe to be the plug ir harness even though the tests show it to be good.
Another thing is it could be an injector causing a lean condition under extended load......or a valve issue.....seems unlikely though.
I'm open to suggestions.........