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I don't believe the 02 is the issue, the old one had a poor switch rate, something like once every 2-4 seconds, current one is once per second. New sensors allowed it to pass smog 2 years ago

I have done a propane test before with no results, but I may try such again I have not run a compression test on it before, haven't suspected a compression issue. I don't suspect any head gasket issues since it doesn't consume coolant and never has an issue firing up even in the winter, hot...

I haven't had the chance to do a highway rolling test with minimal braking to check temperature then. I do notice the drum I have issues with tends to be 30-50 degrees hotter than the other drum, iirc 230 for the right and 270 for the left, short drive frequent braking. I'm planning to do my...

No

I can try that. The hoses are actually in decent shape I've removed them before when I went to replace the dpfe a few years ago, and then again last year when I did the UIM gaskets. They've held up

Interesting, well I don't have a hard pedal, so it's probably not that. Mines actually a little soft at times and a little inconsistent, best guess is because of the out of round drum on the passenger side maybe it causes inconsistent contact, sometimes it feels like the self adjusters are...

Vulcan engine, non flex fuel Also using this to post data screenshots: I forgot to get cruising data so I will have to update later. I do remember with A/C off cruising would also hold around 0% but I'll double check and post the screenshots later. Apologies for the cruddy app, only other...

Front brakes feel like they're doing most of the work honestly, what symptoms did you have when they were both collapsed? I checked my fronts with an ir thermometer as well and didn't find anything significant. Had trouble finding a good spot to aim it at though because of the reflectivity of...

Okay so I just tried this a little bit ago, found a hill that's maybe 5% incline, brought it to a stop and then let it creep up the hill to 5mph and put it in neutral. It didn't really "grab" at all when reversing direction, I didn't hear anything (windows down) or feel anything, just...

No codes present, pending or otherwise. Vulcan engines never received a knock sensor iirc. I know mine doesn't have one

Transmission is rebuilt around 36k ago about two years ago just did a fluid service on it, definitely doesn't slip, probably brakes as others suggested, I'm gonna try the hill test someone else mentioned above and report back. I wouldn't be surprised if the brakes were a contributing factor with...

Vulcan non flex fuel. I'll have to check again because I forget the exact number at idle, I think around 3-5 g/s at idle it varies, I think it was within range iirc. Long terms stick around 0% go a little positive under decel but only like 8% for a moment. Short terms at idle also hover at 0%...

Not a bad idea but no the live data shows it functioning normally and responding to engine temperature changes and the gauge sendor agrees with the sensor. I don't suspect it personally

One of the reasons I'm glad this car doesn't have a ton of vacuum lines and connections. I've looked over them and none of them are cracking or dry rotting, I've replaced the PCV hose and the evap hose going from the UIM to the Purge solenoid. My only concerns are the thin vacuum lines some of...

Interesting, mines about to roll over 179k in a couple hundred miles, I have noticed if you really pay attention at idle it has a couple partial misses I can kind of hear at the tailpipe, it's not pronounced and I can't feel it whatsoever, and mode 6 is convinced it doesn't exist so. Well if the...

That's actually a fantastic idea once I find a suitable incline I'll try that out, several come to mind actually but it'll probably have to be tomorrow I try that. You're right we should rule that out before anything else. Will update

I'll give that a go and see what happens

I don't go on the highway as often as I used to lately, but I can say my highway mpgs are around 16-17 rn if I almost exclusively drive highway. But my usual commute is in town, sometimes only a couple miles, but usually I'd say around 4-10 miles per trip, maybe 30-60 a week depending on where I...

I'll go ahead and get some for you probably tomorrow

No it didn't drop immediately after install, actually replacing those allowed me to pass smog in 2023, and then I had to go again last year and that was around when the issue was really cropping up, and it passed, in CA at that. I originally replaced them because they were getting lazy. I did...