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I have a 02 Chevy Cavalier with a 2.2L SFI 159,xxx shortly after purchasing the car on my way home around 2,000rpms or greater I started to hear a noise to what sounded like a rod knock but it was not very loud at all but higher the rpm the louder it got, after noticing that at idle rpms the oil light would come on. The oil level was fine so I have replaced the oil pump thinking that it was the issue for the sudden noise after replacing the oil pump on my way home it started doing the exact same thing but at higher rpms it sounded like it was knocking around 2,500rpms or greater and then the oil light came back on at lower rpms, but there is no distinct noise at any lower rpms it sounds like a healthy motor. I myself have determined that I have a bad connecting rod bearing but at the same time I had no bearing material in the old oil or anywhere to be found in the pan, the pan did have quit a bit of sludge in it and on the pick up could a blocked passage way cause this to happen? Tomorrow I am going to pull the valve cover and see what the oil flow looks like going to the head. If a passage way is blocked where do I start from there?
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If you saw sludge on the pickup I’m sure it will be in the valve cover. Sounds like
oil changes were not done frequent enough. What you could do is read oil pressure
with a gauge to see if the pressure is there or the oil sender is gummed up/false reading.http://www.ericthecarguy.com/faq/diagnosing-noises-in-your-car
[quote=”college man” post=165779]If you saw sludge on the pickup I’m sure it will be in the valve cover. Sounds like
oil changes were not done frequent enough. What you could do is read oil pressure
with a gauge to see if the pressure is there or the oil sender is gummed up/false reading.http://www.ericthecarguy.com/faq/diagnosing-noises-in-your-car%5B/quote%5D
There probably was not regular oil changes I haven’t owned the car long. The oil light only comes on once the car is heated up and at a idle the noise only happens above 2500Rpms but I was just tinkering around with it and was seeing if I could try and hear where it was coming from but it didn’t do it. I have only witnessed it while driving the car, and personally I think the longer you drive the car as in distance or the louder it gets this could just be me and my nerves but I cant tell. Another buddy of mine says he thinks its not a rod knock because its too fast of a noise and not the normal thump you get with a knocking rod. His conclusions was it could be the timing chain and I have read these motors are known for there timing chains, he also came up with this in less than a 5 minute ride in the car basically down the road flipped a u turn and headed home.
Take it to someone who knows these engines and they will tell you pretty quickly exactly what the issue is.
Messing around guessing is a complete waste of time and energy and won’t get the problem fixed. It needs to be rectified if you want to keep the engine operational and your car on the road.
Any decent technician checking over the car before you bought it should have been able to identify the problem and warn you as well. Checking these vehicles before you buy is always money well spent.
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