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Car Forum / Honda Cars / September 2004Screeching sound from engine on 'cold' days
Hi All, I own a 99 civic coupe - has given me flawless service however, since around 2002, it has been emitting a shrill screeching sound when the engine is started cold (such as early in the morning. Once the engine heats up, the sound is gone. I put 'cold' in the subject line because I live in Phoenix AZ :) Yet, this problem occurs more frequently once the weather starts to cool down. I know this is not the brakes, it sounds more like a belt needing some silicon but despite repeated checks with the shop, they cannot find a problem. Any suggestions would be welcome. Thanks, John > Hi All, > [quoted text clipped - 15 lines] > > John Sounds like a glazed belt to me. Peter H >> Hi All, >> [quoted text clipped - 19 lines] > > Peter H That is an interesting possibility because it fits the symptoms. How can I confirm this? John >That is an interesting possibility because it fits >the symptoms. How can I confirm this? Spend $20 and replace the belt (yourself) or spend $80 and have the dealership do it. Do not spray any belt dressing on it because it's really sticky and gets all over things and "gloms" up the engine compartment. > Hi All, > [quoted text clipped - 9 lines] > more like a belt needing some silicon but despite repeated checks > with the shop, they cannot find a problem. What have you done in the two years, since it started doing this? >>Yet, this problem occurs more frequently once the weather >>starts to cool down. I know this is not the brakes, it sounds >>more like a belt needing some silicon but despite repeated checks >>with the shop, they cannot find a problem. > > What have you done in the two years, since it started doing this? Well, I've taken it to my mechanic -had him check out the belts to make sure they were appropriately gel'd. I got new (front) brake pads about 6 mo. ago and had them look at the engine again. Another problem is that this problem occurs when the engine is cold - typically in the mornings. By the time I drive up to the shop, the sound is gone. Then there are periods of days when it disappears completely so makes me suspicious of what's going on. John > Well, I've taken it to my mechanic -had him check out the belts > to make sure they were appropriately gel'd. I got new (front) brake [quoted text clipped - 6 lines] > Then there are periods of days when it disappears completely so makes > me suspicious of what's going on. That's pretty much everything that I would have tried. Nothing harder to find than an intermittent noise or problem. Have you left the vehicle at the dealer overnight, so that they have the first crack at starting it in the morning? Maybe that way, the noise would show itself.  SignatureBrian http://www.cakesbydarlene.ca http://www.accesswave.ca/~orion >Another problem is that this problem occurs when the engine is cold - >typically in the mornings. By the time I drive up to the shop, the sound >is gone. Belt. Definitely. Would bet $100 on it. >Then there are periods of days when it disappears completely so makes >me suspicious of what's going on. > >John >Hi All, > [quoted text clipped - 15 lines] > >John I have the same problem. Search the usenet archive, the problem seems to be 'piston slap' and is apparently normal. http://groups.google.com search: civic piston slap > I have the same problem. Search the usenet archive, the problem seems > to be 'piston slap' and is apparently normal. > > http://groups.google.com > search: civic piston slap As pointed out by 'curly', that's not it... John > Hi All, > [quoted text clipped - 15 lines] > > John =========================== One of your belts is just a bit too loose. A tiny shot of water will prove which one it is. Then tighten it a bit. Piston slap sounds like a VW diesel idling. That's not likely your problem. 'curly' > One of your belts is just a bit too loose. A tiny shot of water will > prove which one it is. Then tighten it a bit. > > Piston slap sounds like a VW diesel idling. That's not likely your problem. > > 'curly' What would I hear/see? John >> Hi All, >> [quoted text clipped - 24 lines] > >'curly' Do loose belts cause the noise to occur only during cold days when the engine is cold? Noise due to loose belts should occur regardless of outside temp, shouldn't it? My car only does that when temperature is <20 degrees F. Annoying as hell but goes away after 1-4 minutes depending on how could it is. On 9/18/04 7:58 PM, in article 3qlpk095k7fc4hcokpumbkblbel34ju2as@4ax.com, >>> Hi All, >>> [quoted text clipped - 30 lines] > <20 degrees F. Annoying as hell but goes away after 1-4 minutes > depending on how could it is. Could be the bearings in one of the pulleys or tensioners. > On 9/18/04 7:58 PM, in article 3qlpk095k7fc4hcokpumbkblbel34ju2as@4ax.com, > [quoted text clipped - 36 lines] > > ============== Idler bearings usually get noisy when they get HOT, but a belt that chirps cold is loose, or 'glazed' as someone else said it. Once the engine is warmed up, squirt some water on one of the belts and restart. If you get the same noise, that's the belt to tighten. You can also try running the fan, headlights, stereo, portable beer fridge, to see if the squeeling lasts longer. Then you could guess it's the alternator belt. I think Honda belts have to be a lot tighter than they did on cars in the 'olden days' 'Curly' Loose belts do this on cold mornings because you have just started the engine and the Alt goes into a full load to start replenishing the battery. Ya ought to hear it in -20 degree weather Steve >>> Hi All, >>> [quoted text clipped - 31 lines] > <20 degrees F. Annoying as hell but goes away after 1-4 minutes > depending on how could it is. >Do loose belts cause the noise to occur only during cold days when the >engine is cold? Noise due to loose belts should occur regardless of >outside temp, shouldn't it? Rubber and rubber-like compounds, unlike other materials, shrink when they get hot. A cold belt warms up and shrinks. Elliot Richmond Freelance Science Writer and Editor Serpentine belt. Time for a new one. >Hi All, > [quoted text clipped - 15 lines] > >John Like Curly said, I would first suspect a belt. I replaced my alternator belt and removed, then reinstalled the power steering belt earlier this summer (all as part of a bigger job). I immediately started getting the screech-at-cold-startup, too. It turned out I hadn't tightened the alternator belt sufficiently. I did so, and have had no problems since. > Hi All, > [quoted text clipped - 15 lines] > > John My power steering pump makes a whining sound when I start the engine on real cold mornings (-10 F and below). That noise is different from a slipping belt tough. The whine usually fades away within one or two minutes. Seems that the PS fluid gets thick and the pump cavitates a bit. Carl 90 Integra |
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