When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'm hoping someone on the forum can look at their engine's live data to see the cam timing PID for bank 1 and 2. This is not in generic OBDII data, requires OE level diagnostics or equivalent. I'm looking for a point of comparison. The two PIDs are: Intake Variable Camshaft Timing Bank 1 and Intake Variable Camshaft Timing Bank 2
I found that my bank 1 and 2 cams are consistently 4 degrees out of phase. Service data gives no information on what these should be, or what the amount of error is before the PCM flags a correlation code. I assume based on other vehicles a code would be set at more like 10 degrees error. But in looking at a photo of the cam sprocket and doing some quick math, 3 degrees is an error of 1 tooth of the cam. I do have an engine vibration from idle through 2k rpm... if one cam is advanced more than the other this might explain that issue. I'm trying to decide if this warrants opening the cam covers and getting timing tools to check the physical cam timing.
Any comparison data would be much appreciated!
(sorry for the blurry photos, hard to capture while driving)
i just pulled it off my car. 4 degrees between them off idle don’t worry about it
Thank you for checking that!
I'm thinking based on the numbers my scan tool is reporting it must be crank degrees, and I agree if that's the case, then 4-5 degrees at the crank = 2-2.5 degrees at the cam, which is negligible.
From your picture it is telling you it is only 0.04 degrees different! Next to nothing.
The data PID labels are misleading. The two labeled "Actual" are the desired cam phase angle, which is 0 at idle and only increases when off idle (see graph). The two data PIDs that sit at 41/45 degrees are the cam phase measurement from the CPS. These are approx 4 degrees apart.
cam timing data from ECM
