grinding/scraping noise - JeepForum.com

 
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post #1 of 15 Old 09-05-2013, 02:16 PM Thread Starter
braddf
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2001 WJ 
 
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grinding/scraping noise

I have an 01 with a 4.0. Whenever it wants to shift it makes almost like a scraping noise then it stops for litterally a second then shifts with no problems then scrapes about one more second afterwards. Its leaking antifreeze bad and the oil pressure drops to 0 when im going belowe 35 i have no idea if any of these things might go together


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post #2 of 15 Old 09-05-2013, 02:28 PM
HiPERnx
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Does the wj throw any codes ?

To check codes:
1. Put the key in the position before all the lights come on.
2. Switch to on (lights on) and off again, do this 3 times fast. And finally stop in the on position.
3. Watch the odometer and read the codes.

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post #3 of 15 Old 09-05-2013, 06:36 PM Thread Starter
braddf
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Quote:
Originally Posted by HiPERnx View Post
Does the wj throw any codes ?

To check codes:
1. Put the key in the position before all the lights come on.
2. Switch to on (lights on) and off again, do this 3 times fast. And finally stop in the on position.
3. Watch the odometer and read the codes.
No ive been checking for codes for weeks now and it hasn't found a single one

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post #4 of 15 Old 09-07-2013, 08:08 AM
HiPERnx
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How long ago since last oil change ?

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post #5 of 15 Old 09-08-2013, 09:52 AM Thread Starter
braddf
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Quote:
Originally Posted by HiPERnx View Post
How long ago since last oil change ?
Less than 2000 miles ago. My main concern right now is the antirfreeze. It can't keep the tank full at all. The low coolant chime goes off the day after on the day after that. The radiator is still full and the motor doesn't run hot but last Monday I let te keep sit for two hours after20 minutes of driving and the oil burned my finger it was still so hot

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post #6 of 15 Old 09-08-2013, 10:06 AM
cykaaro
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Need to deal with one thing at a time. They may be related, they may not. First thing is the cooling system as you do NOT want to pooch your engine. It's loosing coolant somewhere. Do you know where? Need to track that down. As well, how does the oil look like on the dipstick? The coolant has to be going somewhere, but hopefully isn't into the engine. That means head gasket issue. What does your temp gauge show you? Does your fan come on ok? To check, if the AC is on, the fan should be on as well. As well, if you don't know when it was last done, I'd just replace the thermostat. It's easy to do. Is the waterpump seaping at all from the weep hole? If so replace it. Another issue could be the fins are in bad shape as well and not moving the coolant properly. Have you been overheating at all? or just loosing coolant?

For the oil pressure could be the sending unit needs to be replaced. Hook up a mechanical gauge to see exactly what the pressure is. If the gauge shows everything is fine, replace the oil sending unit. (mopar only, don't use aftermarket). Otherwise it will show you there is an actual oil pressure issue that needs to be addressed.

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post #7 of 15 Old 09-08-2013, 10:14 AM Thread Starter
braddf
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Quote:
Originally Posted by cykaaro View Post
Need to deal with one thing at a time. They may be related, they may not. First thing is the cooling system as you do NOT want to pooch your engine. It's loosing coolant somewhere. Do you know where? Need to track that down. As well, how does the oil look like on the dipstick? The coolant has to be going somewhere, but hopefully isn't into the engine. That means head gasket issue. What does your temp gauge show you? Does your fan come on ok? To check, if the AC is on, the fan should be on as well. As well, if you don't know when it was last done, I'd just replace the thermostat. It's easy to do. Is the waterpump seaping at all from the weep hole? If so replace it. Another issue could be the fins are in bad shape as well and not moving the coolant properly. Have you been overheating at all? or just loosing coolant?

For the oil pressure could be the sending unit needs to be replaced. Hook up a mechanical gauge to see exactly what the pressure is. If the gauge shows everything is fine, replace the oil sending unit. (mopar only, don't use aftermarket). Otherwise it will show you there is an actual oil pressure issue that needs to be addressed.
Oil looks like oil there is not any coolant in it, ac and everything works great, it doesnt overheat it stays below the halfway mark in 90 degree weather, just loosing coolant, and ive replaced the water and oil pump as well as the sending unit three times all mopar

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post #8 of 15 Old 09-08-2013, 10:29 AM
cykaaro
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I'm gathering you bled the cooling system properly? as you're not overheating. Need to track down where it's leaking from. Check your hoses, drain cock, around the water pump. There has to be signs of where it's going somewhere. Mine I discovered was at the drain cock. It slowly loosens a bit is what it appears to be so I just have to ever so often tighten it up again.

You definitely need to get a mechancial gauge on the oil to see what it's really doing. The place that did my engine rev'd the hell out of it when my gauge was doing strange things. Also held the throttle at about 2000rpm's or so. Told me that if there was in fact an actual oil pressure problem he should be hearing noises from the engine that shouldn't be there. Add the fact that when he let go, the needled would sweep immediately to 0, the issue was in fact either a sending unit issue or a gauge issue. Seems my new sending unit was bad, and that my original one was fine, but seeps a bit and got into the connector causing it to go haywire. Cleaned it up and it back in and it's been good. 41,000km+ later. Now, this doesn't mean there isn't an issue with the sending unit or oil pump or that there is. You need to know what it's realling doing. Mechanical gauge is how you will determine that.

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post #9 of 15 Old 09-12-2013, 07:37 PM Thread Starter
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Back on the scraping noise, it appears to only do it when im on the gas pretty good. When I drag *** it doesnt and it shifts just fine

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post #10 of 15 Old 09-13-2013, 12:33 AM
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Scraping noise could be the transfer case. Roll down the window and listen to find out where the noise comes from.
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post #11 of 15 Old 09-13-2013, 09:08 PM Thread Starter
braddf
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Quote:
Originally Posted by rep-tile View Post
Scraping noise could be the transfer case. Roll down the window and listen to find out where the noise comes from.
Its at the front and towards the middle I believe

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post #12 of 15 Old 09-14-2013, 01:02 AM
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See if theres a cable rubbing against your front driveshaft.Other members had an issue just like yours and it was the cable hitting the driveshaft causing a scraping sound.It should be wire tied so it doesnt rub.Worth a shot,take you a minute to look,good luck.

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post #13 of 15 Old 09-17-2013, 04:47 PM Thread Starter
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Quote:
Originally Posted by HVACNY View Post
See if theres a cable rubbing against your front driveshaft.Other members had an issue just like yours and it was the cable hitting the driveshaft causing a scraping sound.It should be wire tied so it doesnt rub.Worth a shot,take you a minute to look,good luck.
I didt see a cable anywhere near it

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post #14 of 15 Old 09-17-2013, 05:25 PM
tim0
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Just by chance have you checked you transmission fluid level?
Do this while its running and in park.

What speeds does it shift at? You may need to adjust the detent cable as well.
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post #15 of 15 Old 09-18-2013, 08:14 PM Thread Starter
braddf
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Quote:
Originally Posted by tim0 View Post
Just by chance have you checked you transmission fluid level?
Do this while its running and in park.

What speeds does it shift at? You may need to adjust the detent cable as well.
Everythings fine im not sure the shift points though ill check and get back to you

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