Startup screech
#1
Seasoned Member
Thread Starter
Join Date: Jul 2013
Location: Southern California
Posts: 259
Likes: 0
Received 15 Likes
on
11 Posts
Year: 1988
Model: Cherokee
Engine: 4.0L
Startup screech
When I start the Jeep up I am getting this loud screeching noise. At first It was only happening when the car was warm now it seems to happen more often than not. Was advised that it may be the belt or the alternator but my alternator has since been changed and it would still make the noise sometimes when I'd crank it with the cps disconnected, so I don't think it's the belt. The sound seems to be coming from the driver side. I recorded audio with the hood open and attached it to this post. Anyone else run into this?
#2
Moderator CF K9-unit
Join Date: Apr 2012
Location: Alaska
Posts: 5,842
Likes: 0
Received 9 Likes
on
8 Posts
Year: 2000 sport
Model: Cherokee (XJ)
Engine: New 4.0l from s&j engines
Kinda sounds like the starter not disengaging fast enough after start and dragging on fly wheel. Im just guessing on this one.
#3
Seasoned Member
Thread Starter
Join Date: Jul 2013
Location: Southern California
Posts: 259
Likes: 0
Received 15 Likes
on
11 Posts
Year: 1988
Model: Cherokee
Engine: 4.0L
Yeah that was my other thought but the sound doesn't seem to be coming from that side. Still probably worth it to take it apart and clean it up.
#4
CF Veteran
tighten your belt slightly, or hit it with some water from a spray bottle that mists, and see if it changes. this should take just a few minutes to check.
I don't know what a CPS would have to do with the belt.
I don't know what a CPS would have to do with the belt.
#5
Seasoned Member
Thread Starter
Join Date: Jul 2013
Location: Southern California
Posts: 259
Likes: 0
Received 15 Likes
on
11 Posts
Year: 1988
Model: Cherokee
Engine: 4.0L
Unplugging the cps allows the engine to crank without starting. When I did that it would go something like this: turn key, crank crank crank, no start of course, release key. Turn key again, ssssssccccccrrrrreeeecccccchhhh, release key before my teeth explode.
Last edited by ButtStripe; 09-14-2016 at 04:57 PM.
#6
CF Veteran
That sound sure does seem metallic to me. I would think either starter is not retracting (as stated above). Or the mechanical fan is touching something it shouldn't. Like the radiator or harmonic balancer. If the fan is touching the radiator, it will often leave evidence like a circular pattern where it has rubbed the fins. On the harmonic balancer, look for a shiny metal edge indicating that something metal has been touching it as it spins.
Trending Topics
#8
Seasoned Member
Thread Starter
Join Date: Jul 2013
Location: Southern California
Posts: 259
Likes: 0
Received 15 Likes
on
11 Posts
Year: 1988
Model: Cherokee
Engine: 4.0L
I think it's the starter. Removed it today, and you can see the wear on the teeth. Seems to be retracting alright, but again usually my first start up of the day doesn't screech. I think it warms up and loses its rigidity. Any thoughts?
#9
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,863
Received 1,524 Likes
on
1,236 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
It rattles when you shake it, right?
Replace it. Ring gear teeth will be fine.
Duma nailed this one!!
Replace it. Ring gear teeth will be fine.
Duma nailed this one!!
#10
Seasoned Member
Thread Starter
Join Date: Jul 2013
Location: Southern California
Posts: 259
Likes: 0
Received 15 Likes
on
11 Posts
Year: 1988
Model: Cherokee
Engine: 4.0L
Replaced it. It was in fact the starter bo barter banana fana fo farter.
And yes it rattled. Like you said, the new one definitely did not rattle so that's another good indicator to look for.
Thanks for the help all!
And yes it rattled. Like you said, the new one definitely did not rattle so that's another good indicator to look for.
Thanks for the help all!
Thread
Thread Starter
Forum
Replies
Last Post
freakshow502
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
21
09-26-2016 07:23 AM
rolando.castjim@gmail.com
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
4
09-01-2016 10:57 PM
Kesey
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
08-28-2016 07:57 AM
GMH
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
08-26-2016 02:17 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)