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What is knocking noise on 350 Chevy at 30 mph and above after warm up but does not do it at idle?
Wiki User
∙ 16y ago
Sounds like preignition. A higher octane gas might help
Wiki User
∙ 16y ago
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Removal of water pump pulley 1994 Chevy cavalier 2.2?
I have a knocking noise near the water pump pully or idler arm pully on my 94 chevy cavalier 2.2 motor when its at idle, if i give it more gas the noise will go away do you know what this could be? i took off the tension idle pully and checked the bearing and it was fine.
Your Chevy Malibu make a knocking noise coming from the engine in cold temp how can you get this fix?
I have a 1997 Chevy Malibu with 176k on it. Never had a new engine or anything, runs like a champ. It has been making a knocking noise when its cold.(until car is warm) for a long time now. It still makes a little one while at idle, not loud or can even really be heard though.
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Sorry, disregard this question, I didn't word it properly.
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My 1998 ES300 is making a knocking or grinding noise while in idle and will stop after drive it for a while but will return once you go back to idle Can anyone help?
I just took my car into to shop and the problem is the EGR Valve.
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when warmed up high pitch noise at idle and it gets louder during acceleration Response to : Can someone actually answer this question? This is my question and the above answer makes no sense.
Engine knocking when idle?
There are a number of reasons why an engine would knock when you idle the vehicle. It could be your motor mounts. You may also need oil.
