sorexcuse Posted February 17, 2007 Share Posted February 17, 2007 Very strange thing happened on the way home from work. It's cold here, been shifting in and out of 4wd for the snow. Almost home, no CEL, temp in the middle, no other lights or warnings. Get a high pitched whine as I pull in the driveway. Shut it off, coast in. Start it up, no problem but the high pitched whine is there and gets worse. Let it sit, have my better half start while I'm looking in and it's much worse very loud and almost a metal to metal type sound. Car starts fine but has the noise immediately, all belts are moving. Didn't run it for more than 30 seconds total since the noise started. Any ideas? Of course I had just phoned and completed a deal to trade the truck in. Unfortunately, even a car dealer will notice this. 97 Pathfinder, 159k miles, A/T. Any input would be greatly appreciated. Thanks. Link to comment Share on other sites More sharing options...
NismoSkyZ Posted February 17, 2007 Share Posted February 17, 2007 At first I thought it was a crazy power steering pump, but when you went on to say metal on metal, I'm stumped. Link to comment Share on other sites More sharing options...
sorexcuse Posted February 17, 2007 Author Share Posted February 17, 2007 Interesting, maybe the diagnosing should start with belt removal to see if it is any of the accessories or if it's the engine. I may have to break out the Carharts and go to work tonight. Thanks. Also, there are still no warning lights on the dash when re-started. Will report back if I do pull the belts. If anyone else has suggestions, please feel free. Thanks. Link to comment Share on other sites More sharing options...
nissandoms47 Posted February 17, 2007 Share Posted February 17, 2007 it could be the accessories most likely the bearings in one of them. and if the engine still runs its not blown. pull the belts 1 by 1 then start the engine then pull the 2nd one to narrow it down. Link to comment Share on other sites More sharing options...
Simon Posted February 17, 2007 Share Posted February 17, 2007 Strange. I think your idea of taking off belts to diagnose is a good one. You could also try some belt conditioner if you have it, in case it's just belt squeal......but that's not a metal on metal sound.....that's what's scary. Link to comment Share on other sites More sharing options...
CALPATHY Posted February 17, 2007 Share Posted February 17, 2007 Water pump bearing? Link to comment Share on other sites More sharing options...
Casey.T Posted February 17, 2007 Share Posted February 17, 2007 By removing the belts 1 at a time, you will isolate the source... Water Pump, Power Steering Pump, Alty or the little belt tensioner.... Link to comment Share on other sites More sharing options...
nissandoms47 Posted February 17, 2007 Share Posted February 17, 2007 thats true, it could be one of the idler pulleys, mine made that sound and it sounded just like what you are describing. Link to comment Share on other sites More sharing options...
herm Posted February 17, 2007 Share Posted February 17, 2007 I get a nasty howl on cold start-ups from one of the pully shafts/bearings, but it goes away after a mile or so. I've assumed it is just dry, since it doesn't happen in summer months. The fact that you didn't throw a code suggests it isn't a motor failure - just a very angry part. Shouldn't be hard to isolate. m. Link to comment Share on other sites More sharing options...
sorexcuse Posted February 17, 2007 Author Share Posted February 17, 2007 THANK YOU ALL ONCE AGAIN! Two posts, two weekends, you guys save me. P/S reservoir was a little low, filled it with no effect. Re-tightened the belt, no effect. Began taking belts off one at a time, the first one was the right on. My A/C compressor has frozen! Wind chills of -15 F and part of my air conditioning system goes out. Go figure! Thank you very good, pragmatic approaches even though I flew off the deep end. Link to comment Share on other sites More sharing options...
herm Posted February 17, 2007 Share Posted February 17, 2007 Out of curiousity, if you don't mind, what is the trade-in value? m. Link to comment Share on other sites More sharing options...
sorexcuse Posted February 18, 2007 Author Share Posted February 18, 2007 Here in upstate NY, not much. Rust on the front fenders and hood and starting in many other places. 97 SE with a/t, leather, 159k miles. From a small lot selling cars under going rate other dealers were charging, was happy to get the $3200 I got. May not sound like much, but it was more than I thought I would get. Link to comment Share on other sites More sharing options...
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