Originally Posted by
badhabits727 I will be tackling the knock sensor today. I'm throwing codes for knock sensor, o2 sensor, incomplete cat, egr incomplete. Runs fine up to 3200rpm, then it hesitates and feels like it's bogging... Trying to drive up a hill in 5th gear at 55mph is a no go, I'll be doing 30 by the top of the hill. It's retarding my timing horribly.
Originally Posted by
clean_classic I have the same problem but replacing my knock sensor did not fix the issue, still have not found the problem yet
Check your CAT.. The Se-R that I just bought came with three codes, Knock sensor, 02 front, 02 rear..
The car felt fine bottom end, but midrange and top end felt like I was towing a pick up truck.. It was a Bi*** to unistal the knock sensor only to find out that it was fine.. Then I took off the front and rear 02 sensors to test, and they were also within in spec.
Luckily It made a mean ass growl and I decieded to take it for a spin around the block with the sensors off and BAM!!!! car felt a whole lot better..
60 dollars later new cat, errased the codes and I have yet to see the CEL come on.. Not to mention the car woke up
I figure since the CAT was so clogged up (Oem 180k) that the motor was having trouble breathing, most likely the exhaust gasses were creating alot of backpressure and not all clearing out of the cylinders, wich in my opinion made a crappy ass burn and made the motor detonate and knock..
Then again im not a real Tech.. But it worked for me and that is the only explanation I could come up with..
Good luck. I hope this helps.