RonW Posted May 9, 2005 Report Share Posted May 9, 2005 Is It my imagination or is the Nortstar engine noisy. I have had Fords that you couldnt hear running. When I go to a drive in teller you can hear the noise bouncing off the wall sounds like valve tappets. Recently went to the stealership and they said it was the AC compressor . Still have the noise, specialy on a cold start. Link to comment Share on other sites More sharing options...
Scotty Posted May 10, 2005 Report Share Posted May 10, 2005 I have experienced that you described. I never hear any clackity clack unit I pull up at the bank drive up window then I can hear a lifter sound. Personally I think that engine noises reflected off a wall toward your ears are magnified... I never hear that noise any other time. I wouldnt worry about it. Maybe its time to change the oil, who knows, im down to 12% Link to comment Share on other sites More sharing options...
MAC Posted May 10, 2005 Report Share Posted May 10, 2005 I don't hear anything when I pull into a teller. My engine runs quietly. I certainly don't hear valve tapping. There has been a few inquiries regarding noise or tappet sounds. http://caddyinfo.ipbhost.com/index.php?showtopic=3378&hl Link to comment Share on other sites More sharing options...
JasonA Posted May 10, 2005 Report Share Posted May 10, 2005 General Motors A/C compressors have always been a little noisy in my opinion. Mine ain't any different. I can easily hear a "clackity clackity clack" sound in a drive-thru or bank teller line (or anytime the car is stopped) that goes away with more engine speed. It also goes away when you turn the A/C off. It's definitely the compressor. The bearing has been replaced once on mine. I don't know if this is a failure mode for a compressor bearing or not. Anyone know for sure? Is it a high-pitched clack or a high-pitched whine, or a low-pitched whine, etc? Mine's been doing it for years...never paid much mind to it. Jason(2001 STS, White Diamond) "When you turn your car on...does it return the favor?" Link to comment Share on other sites More sharing options...
Scotty Posted May 10, 2005 Report Share Posted May 10, 2005 As a point of reference, I have my AC compressor by-passed so my clakity is not coming from it.. Link to comment Share on other sites More sharing options...
sonjaab Posted May 10, 2005 Report Share Posted May 10, 2005 GUYS......What your hearing is not valve lifter noise. Your hearing fuel pumping thru the fuel rails and injector poppets ! I had issues with my 01 & 04 Chevy trucks and "lifter tick" at idle. (NOT to be confused with "cold start knock"!) A smart tech at the shop whipped out a "stethoscope" and let me listen and probe................SHO' NUFF !!!!!!!!!!!!!! Most big box parts stores sell them for about $8 bucks...........geo 93 DeVille-13 Chevy Impala 72 GTO - 77 Triumph Bonneville 84 Z-28 Syracuse NY Link to comment Share on other sites More sharing options...
JimD Posted May 10, 2005 Report Share Posted May 10, 2005 I can hear the injectors at idle. Jim Drive your car. Use your cell phone. CHOOSE ONE ! Link to comment Share on other sites More sharing options...
Scotty Posted May 10, 2005 Report Share Posted May 10, 2005 That sounds about right geo....I am sure the hard cold flat reflective concrete wall magnifies the sound. That is the only time I hear the noise, if I lift the hood its not there. It sounds like the oil is low.. Link to comment Share on other sites More sharing options...
maydog Posted May 10, 2005 Report Share Posted May 10, 2005 The serpentine belt tensioner can be pretty noisy as well. Link to comment Share on other sites More sharing options...
WarrenJ Posted May 11, 2005 Report Share Posted May 11, 2005 Funny to see this thread. I was putting air in my right front tire this evening with the engine running, the AC on, and my head nearly in the fender well when I thought to myself, "Darn this thing is quiet. What a SWEET machine!" Maybe I'm just lucky (or deaf)??? Regards, Warren There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
Scotty Posted May 11, 2005 Report Share Posted May 11, 2005 Funny to see this thread. I was putting air in my right front tire this evening with the engine running, the AC on, and my head nearly in the fender well when I thought to myself, "Darn this thing is quiet. What a SWEET machine!" Maybe I'm just lucky (or deaf)??? Regards, Warren Its prolly Long Island ambient ROAD NOISE drowning it out! Link to comment Share on other sites More sharing options...
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