P0325 knock sensor, Mechanic issues
#1
Driver School Candidate
Thread Starter
P0325 knock sensor, Mechanic issues
so I was driving one day in the rain in downtown burbank and I lose power and get a cel, got it checked the next day and it's the knock sensor p0325, I have a 2002 sc with 130xxx miles. So I buy some knock sensors, didnt have them put on yet because $$$, and I took my car to a friend's Mechanic for a second opinion, and he says he hears the engine rattling a bit and now he says that it's the shims, maybe carbon build up, which is causing the code to appear,and that my engine is burning oil, and I might as well sell my car, so now I'm really upset about what I was told, I did some research on how to clean the buildup out of my engine, I put the lucas deep clean and filled up my tank, seems a bit smoother but I still have like 12 13 gallons left. Few things I'm wondering, could a bad/clogged cat cause carbon buildup? I smell sulfur when I accelerate hard, and smells rich when I first start the car, also have bad engine mounts if it matters, bought this car with a "perfect" engine a year ago and now I got these problems, my last sc never had problems, anyways, what can I do to clean up the engine, stop the knocking and pinging so I can have an 8 cylinder again, I read about oil treatments but are those safe? Thanks
Last edited by sexusc430; 01-30-17 at 12:30 PM. Reason: Title
#3
so I was driving one day in the rain in downtown burbank and I lose power and get a cel, got it checked the next day and it's the knock sensor p0325, I have a 2002 sc with 130xxx miles. So I buy some knock sensors, didnt have them put on yet because $$$, and I took my car to a friend's Mechanic for a second opinion, and he says he hears the engine rattling a bit and now he says that it's the shims, maybe carbon build up, which is causing the code to appear,and that my engine is burning oil, and I might as well sell my car, so now I'm really upset about what I was told, I did some research on how to clean the buildup out of my engine, I put the lucas deep clean and filled up my tank, seems a bit smoother but I still have like 12 13 gallons left. Few things I'm wondering, could a bad/clogged cat cause carbon buildup? I smell sulfur when I accelerate hard, and smells rich when I first start the car, also have bad engine mounts if it matters, bought this car with a "perfect" engine a year ago and now I got these problems, my last sc never had problems, anyways, what can I do to clean up the engine, stop the knocking and pinging so I can have an 8 cylinder again, I read about oil treatments but are those safe? Thanks
about catalytic converters read post #46 in this thread. https://www.clublexus.com/forums/sc4...nverter-3.html
#4
Now are you running 91or 93 octane? Replace the knock sensor. Till you do the computer can't adjust itself to stop knocking.
Last edited by Coleroad; 01-30-17 at 02:29 PM.
#5
As far as burning oil goes. Get a new pcv valve. Even if it rattles or been cleaned. It has a spring in it and it does wear out or break.
Last edited by Coleroad; 01-30-17 at 04:06 PM.
#6
Driver School Candidate
Thread Starter
Thanks for the replies, I'll have the sensors changed asap, are there any diys on removing the manifold? Haven't found any, also I didn't realize a faulty knock sensor would cause knocking, the other mechanic I saw threw me off with what he said, besides the removing of the manifold is it tough to switch out the sensors? I can't imagine it being too difficult, I always use 91, don't see any gas stations with 93 in la
Last edited by sexusc430; 01-30-17 at 03:39 PM.
#7
Though not strictly a how-to this link will give you an idea what you're facing.
https://www.clublexus.com/forums/sc4...adventure.html
https://www.clublexus.com/forums/sc4...adventure.html
Thread
Thread Starter
Forum
Replies
Last Post
schmoozer
ES - 1st to 4th Gen (1990-2006)
2
04-29-13 04:54 AM
Tjfaz
ES - 1st to 4th Gen (1990-2006)
3
03-10-13 12:52 PM