Hey everyone, I’ve been trying to get in the habit of looking at my cars computer on forscan to help get familiar with it and to check if anything is wrong. Today when i plugged my laptop in i tried running an on demand self test and got these results (First attachment). Now i’m not guessing any of these are big problems or problems at all, but i wanted to ask about fuel system monitoring, oxygen sensor monitoring, and evaporative system monitoring all being incomplete, and if that’s anything to write home about at all. I also did the OBDII test for results on specific monitored systems and got these results (2nd attachment). I was wondering if “Intake Camshaft Advanced Position Error” having those two values next to it meant anything. When i tried to rerun the test just now it said not ready just like the yellow boxes directly under it. Any and all advice/information/anything would be greatly appreciated!
Actual issue or am i just doing too much? (Forscan)
- Thread starter Lurch.sho
- Start date
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Joshw0000
SHO Member
Do you have any mods (i.e. exhaust, intake, tune)? When you refuel, do you stop pumping when the gas nozzle clicks off or squeeze it more to round up to the next dollar. After a refuel, do you ever notice that your car takes longer to crank (i.e. instead of turning over immediately it turns a few times, then cranks)? Has your gas mileage changed recently (better or worse / lean or rich)? Does your car seem to have more or less power lately?
I'm not familiar with Forscan so I'm not much help in that area. I did recently have some evap issues. I figured it out by watching the AFR on my tuner and it was a cheap fix.
Sent from my Pixel 7 Pro using Tapatalk
I'm not familiar with Forscan so I'm not much help in that area. I did recently have some evap issues. I figured it out by watching the AFR on my tuner and it was a cheap fix.
Sent from my Pixel 7 Pro using Tapatalk
You're overthinking it. Cam position error has a range of 0 to 18.16. You.re at .29. Over 18.16 indicates chain stretch and triggers a CEL.
The not ready monitors are usually the result of clearing codes. Each monitor requires a different set of conditions to make ready. Normal driving should eventually set them ready. Unless your state does emissions tests, don't worry about it.
No mods right now, warranty is still good i’ll keep my nice things nice as long as someone else is footing the bill lol
I don’t normally fill it up, that’s for someone a little above my tax bracket, when i do i go untill it clicks and that’s it
never had an issue with my car turning over, only time i did a brand new battery fixed that issue
i haven’t noticed anything new with power or anything like that either, i didn’t plug it in because I could tell something was wrong, i usually plug it in and dig around if i get somewhere 10-15 mins early and have some time to ****, which is what got me those pictures from this morning
makes sense, i did reset the computer trying to see if that would give me any more info/context and you can see where that got me, glad to hear it’s me bugging and not the car!
Joshw0000
SHO Member
Yep, this is your issue. Any time you clear codes, the computer will run certain checks. That's how it knows to throw a CEL when there's an issue. At certain intervals, it runs a check and sees that something failed. When you reset it, it must now run every check again. Until it passes them, it can't give you an accurate status. Some will pass quickly. Some take a certain amount of specific tasks (slow driving, highway speeds, etc). Just drive it normal for a day or 2, check it again, and it should be fine.
Sent from my Pixel 7 Pro using Tapatalk
So i hooked my laptop back up again today and got some more things that look different to me, and i need someone to tell me if i’m bugging or not again lol.
ran the same OBDII test for results on specific monitored systems, and under oxygen sensor bank 1 sensor 2 and oxygen sensor bank 2 sensor 2 there were values that were close to the max, “fuel shut off rich to lean response time” for both. See the first attachment for the picture, i put a red line under what i’m talking about specifically here. Google isn’t really much help for explaining this, i understand what it means but i don’t understand how 2 different sensors in 2 different banks would have that delay, especially since nothing else on my little spreadsheet is that close to the max is that normal? I also have some misfiring (1 misfire in cylinders 1 and 6, and 3 in cylinder 5 over a roughly 1hr, 30 mile drive) I also added the picture i got from the spreadsheet, the second attachment.
ran the same OBDII test for results on specific monitored systems, and under oxygen sensor bank 1 sensor 2 and oxygen sensor bank 2 sensor 2 there were values that were close to the max, “fuel shut off rich to lean response time” for both. See the first attachment for the picture, i put a red line under what i’m talking about specifically here. Google isn’t really much help for explaining this, i understand what it means but i don’t understand how 2 different sensors in 2 different banks would have that delay, especially since nothing else on my little spreadsheet is that close to the max is that normal? I also have some misfiring (1 misfire in cylinders 1 and 6, and 3 in cylinder 5 over a roughly 1hr, 30 mile drive) I also added the picture i got from the spreadsheet, the second attachment.
Attachments
Once again, you're overthinking this. Those values are less than 10% of the max. The misfires are normal and no cause for concern.
It checks out, I read the excel sheet this morning and thought the max was 1,000ms instead of 10,000ms like it is. My mistake, I appreciate the response regardless, thanks!
