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Old 03-23-2011, 10:26 PM   #31
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Quote:
Originally Posted by chucky cheese
OK I have narrowed it down to the a/c. When I last drove the jeep the a/c was on. Did not turn the a/c off when I turned the ignition off. Two days later started the jeep and grind noise. My theory is that there is head pressure on the compressor and when the jeep starts the belt cannot turn the compressor and the belt drags across the pulley causing the noise. I will experiment further and post. Oh yeah I am sure somebody will post that the compressor should not kick n when starting but I believe there is a fault with the system not Eliminating the compressor load at start causing the belt to vibrate.
Damn that's some pretty good thinking. I'm trying to remember if my heater was on when mine squealed. I USUALLY shut that and the radio off, but I'm not 100%

You should pop the hood before start up and have someone fire it up. Might be able to get the area it's happening in.

I wish I could play too. It's just not cold enough for mine to do it. Next few days I'm getting lows in the 20's...we'll see

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Old 03-24-2011, 06:54 AM   #32
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Damn that's some pretty good thinking. I'm trying to remember if my heater was on when mine squealed. I USUALLY shut that and the radio off, but I'm not 100%

You should pop the hood before start up and have someone fire it up. Might be able to get the area it's happening in.

I wish I could play too. It's just not cold enough for mine to do it. Next few days I'm getting lows in the 20's...we'll see
That's my plan. It is hard to coordinate someone to help when it only does it once when sitting 24 hours. Also gotta remember to shut it off the day before w/ a/c on.

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Old 03-24-2011, 04:18 PM   #33
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All right the latest. turned off w/ a/c on yesterday, this afternoon started jeep and grind happened with a bonus! When the fan blower came on (there is a couple of seconds delay before it starts) there was a second split second grind. So it has something to do with the fan belt and the load on it when starting. I do not have the grind when the compressor is not engaged at starting so I have narrowed it down to either the a/c compressor is engaging at start, the belt or tensioner is at fault so it could be in the electronics that is not eliminating the compressor at start or faulty belt tensioner. Now I have never had a problem starting a vehicle with the a/c on. I tried my dodge van and it starts then a few seconds later the compressor kicks in. My thinking is the electronics are not eliminating the compressor load at start. From other posts Or the lack of posts about this makes me think it is a problem on certain jeeps. I do not want to make a special trip to the dealer for this so I will wait until I have a real problem before I go. I have not yet had a visual on this. It seems my wife has to put on makeup before she goes outside so I really don't have the time to wait for her to get prettied up to come out to start it. But when the planets line up and the moon is in Uranus (thats why it smells like cheese) and the makeup and outfit is perfect I will get her to sashay out and start it as I have the hood open and observe and being careful to observe from the side so as she cannot cash in on my life insurance! So for now TATA ,God speed and cio!
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Old 03-24-2011, 06:58 PM   #34
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Thats a lot of "if"s and "and"s

Thanks for the help, I've been driving with the top down this week so I dont use the A/C and haven't heard the grind on startup. So it must be the A/C.
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Old 07-06-2011, 01:51 PM   #35
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Before calling the dealer I figured I would do a search for this issue on the forum.... and I'm glad I did! I've been getting the grinding sound on and off and I just went out and tested it and it does only happen when I leave the A/C on and turn the Jeep off. So... I take it its just a jeep thing and I don't need to call the dealer?
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Old 08-16-2012, 10:17 PM   #36
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Thats a lot of "if"s and "and"s

Thanks for the help, I've been driving with the top down this week so I dont use the A/C and haven't heard the grind on startup. So it must be the A/C.
Just curious. I know this is an older thread, but are you still getting the "zip tie" grind when starting? Have you brought it to the dealer. I get it in the morning, no matter how fast I release the ignition key and my AC and fan is always off. It has been happening all summer but only in the morning one. Thanks
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Old 08-18-2012, 08:13 AM   #37
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Finally bit the bullet and decided to fix this problem. I replaced my starter and all is well. No grind or zip tie sound. The issue was the starter can start to fail and still crank fine, but the bendix gear is slow on retracting after the engine starts and you release the ignition key. Leaving a problem like this for very long will cause your flywheel to become burred, chewed up, and worn. It was recommended by an ASE mechanic to try to file any burrs and imperfections off the flywheel teeth, by slowly manually turning the engine by hand when removing the starter to also help prevent binding of the gear retraction. The problem only happened in the morning due to the starter bendix being cold and sticking. After using the starter, the starter id warm and also subject to engine compartment heat. Just make sure you remove the negative cable from the battery and wear eye protection before beginning.
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Old 08-20-2012, 06:16 PM   #38
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Just another thought: Battery voltage, positive and negative ground connections etc. can also affect how the starter engages. Found this out the hard way... cost me 2 starters and a flywheel in my 76 vette. All because the positive battery connection was faulty. Worth a look ! Good luck
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Old 08-22-2012, 09:49 PM   #39
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New battery, new cables, Great connections, and 12.6 volts at starter. Swapped out the starter and no more zip tie sound. The bendix was sticking upon release of ignition key. A starter may be starting to fail, but begin to have issues retracting the gear from the flywheel.

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