chrysler 5.2 engine trobleshooting - Northern California Ford Owners

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»	Northern California Ford Owners » Automotive » Tech Talk » chrysler 5.2 engine trobleshooting

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Topic: chrysler 5.2 engine trobleshooting

lxhatch5.0
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Member # 6319

posted

well i have been trying to fight the jeep gremlins N im stuck.

Its a 5.2L chrysler V8 that makes a really lousy screetching/squealing noise when it warms up.

Changed water pump N pulley thinking it was that but no cigar.

Its NOT a pulley, bc when i cold start it it idles real quiet N smooth. As soon as shes warm it starts to make the noise! It pulls smooth and healthy its just this noise gets under my skin sounds like a bucket.

Any info to solve this would be greatly appreciated.

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*NorCal

Posts: 1556 | Registered: Dec 2005 | :

1fastmach1
¯
Member # 10137

posted

sounds like ur idler pulley bearing is goin out

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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013

Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010 | :

Built88LX
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Member # 10758

posted

Check your belt it could have stretched

Posts: 2390 | From: $acramento | Registered: Mar 2011 | :

lxhatch5.0
¯
Member # 6319

posted

IDLER PULLEY? If it was a pulley wouldn't it start making the squealing noise as soon as the pulleys started to spin? It only does it when its warm Brett. When its in motion i cant hear it but once u come to a stop its obvious.

Belt is fine i installed a new 1 when i pulled out the old water pump

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*NorCal

Posts: 1556 | Registered: Dec 2005 | :

1fastmach1
¯
Member # 10137

posted

could be it only does it cus the bearing heats upp and the bearing is shot

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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013

Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010 | :

lxhatch5.0
¯
Member # 6319

posted

Oh ok that makes more sense. Yeah it does make a friction squeal. U think u can check it out for me Bret? I can bring it by if its cool after work lmk. This noise is a PITA

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*NorCal

Posts: 1556 | Registered: Dec 2005 | :

1fastmach1
¯
Member # 10137

posted

yeah its good hit me up

[ November 02, 2011, 10:59 AM: Message edited by: 79 cobra ]

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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013

Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010 | :

Blind
2.3L
CAFords OG
Member # 3052

posted

once it starts doing it, turn it off and pull the belt off then start it up again...

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi

Posts: 8521 | From: Fairfield | Registered: Jul 2003 | :

lxhatch5.0
¯
Member # 6319

posted

I will Brett.

Ill keep that in mind Blind that seems like the easiest way to figure out if its a pulley or not.

Thanks for the input

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*NorCal

Posts: 1556 | Registered: Dec 2005 | :

lxhatch5.0
¯
Member # 6319

posted

Blind I did take of the belt and the whinning continues. Could it be a vacuum leak, or maybe the oil pump? Im stuck here been chasing this noise for a while.

It happens only when its warm, it idles for about 8-10min on a cold start and starts making the noise as soon as it gets the temp warn. All gaugues read fine EXEPT oil pressure its actually peaked all the way at full oil pressure as soon as i star it.

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*NorCal

Posts: 1556 | Registered: Dec 2005 | :

lxhatch5.0
¯
Member # 6319

posted

Blind? John B? anyone have any ideas

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*NorCal

Posts: 1556 | Registered: Dec 2005 | :

Blind
2.3L
CAFords OG
Member # 3052

posted

quote:
Originally posted by lxhatch5.0:
Blind I did take of the belt and the whinning continues. Could it be a vacuum leak, or maybe the oil pump? Im stuck here been chasing this noise for a while.

It happens only when its warm, it idles for about 8-10min on a cold start and starts making the noise as soon as it gets the temp warn. All gaugues read fine EXEPT oil pressure its actually peaked all the way at full oil pressure as soon as i star it.

well you narrowed it down away from all the belt spun accessories at least.

Now there's still a lot of moving parts, but it could be a lot of things. I'd suggest a mechanics stethascope or a long screw driver to try and isolate the noise.

could be timing chain related, oil pump, distributor, idle air control valve, torque converter, starter getting hung up on the flexplate, maybe the balancer is 2 piece like a foxbody and the rubber is coming apart, etc.

Don't run it too long with the belt off as the water pump is obviously not running, but since you eliminated the belt driven things it should be fine to leave the belt on now while you poke around.

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi

Posts: 8521 | From: Fairfield | Registered: Jul 2003 | :

68dustin
CAFords OG
Member # 5388

posted

i had a bad distriburtor that sounded like a bird under my hood only when the engine warmed up..

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"As I lay rubber down the street, I pray for traction that I can keep, and if I do begin to slide, please dear God protect me and my ride!"

Posts: 3990 | From: neverland | Registered: Feb 2005 | :

lxhatch5.0
¯
Member # 6319

posted

Thanks Blind yeah I took off the belt for a bit, still made the noise.

68 yeah ill take off the distributor and take a look. A couple people told me it was a worn out dizzy doing the whinning. Sounds like a turkey under the hood

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*NorCal

Posts: 1556 | Registered: Dec 2005 | :

Venomousnotch
¯
Member # 8695

posted