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2009 Cadillac cts 3.6 LLT rough idle

  • rugrat12
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2 years 7 months ago #60261 by rugrat12
2009 Cadillac cts 3.6 LLT rough idle was created by rugrat12
The car idles rough but it runs fine at high speeds. I performed a smoke test and it passed. the question I have is whether the fuel pressure is supposed to oscillate like the data I got from the car. during idle the fuel pressure is higher than desired but when I drive the car it drops down is this normal
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2 years 7 months ago #60272 by Cheryl
Replied by Cheryl on topic 2009 Cadillac cts 3.6 LLT rough idle
Have any variable valve timing data pids? Short term and long term looked good in your screenshot

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2 years 7 months ago #60294 by rugrat12
Replied by rugrat12 on topic 2009 Cadillac cts 3.6 LLT rough idle
I have the pids, the variance is stuck at 0.5 degrees and the desired angle is also at 0.5 deg according to the scanner. the 1st picture is at idle. I just did the timing chain with new phasors.
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