Loud grinding on start-up
 

258 YJ, Peugeot trans. When I start it cold, I get a loud metallic
grinding sound. Rev the engine to 2,000 RPMs for a couple seconds and
it goes away. Sounds like it could 'possibly' be coming from the pilot
bearing. I replaced my clutch this spring but left the pilot bearing
alone because i didn't have a puller and the clutch I had in there only
had 20k or so miles on it. Assumed it would still be OK. Anyway, if I
start the engine warm, no sound. Looked at the Haynes troubleshooting
section, no mention of such a sound. Tried starting it cold in neutral
with the clutch engaged with the same results. Thoughts? Thanks.

Re: Loud grinding on start-up
 

How about a sticky bendix drive?


Mike Romain wrote:
> If it makes noise when the clutch is engauged, it isn't the bearing
> because it isn't moving then.
>
> I would suspect a loose pressure plate bolt maybe.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Micah wrote:
> >
> > 258 YJ, Peugeot trans. When I start it cold, I get a loud metallic
> > grinding sound. Rev the engine to 2,000 RPMs for a couple seconds and
> > it goes away. Sounds like it could 'possibly' be coming from the pilot
> > bearing. I replaced my clutch this spring but left the pilot bearing
> > alone because i didn't have a puller and the clutch I had in there only
> > had 20k or so miles on it. Assumed it would still be OK. Anyway, if I
> > start the engine warm, no sound. Looked at the Haynes troubleshooting
> > section, no mention of such a sound. Tried starting it cold in neutral
> > with the clutch engaged with the same results. Thoughts? Thanks.

Re: Loud grinding on start-up
 

How about a sticky bendix drive?


Mike Romain wrote:
> If it makes noise when the clutch is engauged, it isn't the bearing
> because it isn't moving then.
>
> I would suspect a loose pressure plate bolt maybe.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Micah wrote:
> >
> > 258 YJ, Peugeot trans. When I start it cold, I get a loud metallic
> > grinding sound. Rev the engine to 2,000 RPMs for a couple seconds and
> > it goes away. Sounds like it could 'possibly' be coming from the pilot
> > bearing. I replaced my clutch this spring but left the pilot bearing
> > alone because i didn't have a puller and the clutch I had in there only
> > had 20k or so miles on it. Assumed it would still be OK. Anyway, if I
> > start the engine warm, no sound. Looked at the Haynes troubleshooting
> > section, no mention of such a sound. Tried starting it cold in neutral
> > with the clutch engaged with the same results. Thoughts? Thanks.

Re: Loud grinding on start-up
 

How about a sticky bendix drive?


Mike Romain wrote:
> If it makes noise when the clutch is engauged, it isn't the bearing
> because it isn't moving then.
>
> I would suspect a loose pressure plate bolt maybe.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
> Canadian Off Road Trips Photos: Non members can still view!
> Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
> (More Off Road album links at bottom of the view page)
>
> Micah wrote:
> >
> > 258 YJ, Peugeot trans. When I start it cold, I get a loud metallic
> > grinding sound. Rev the engine to 2,000 RPMs for a couple seconds and
> > it goes away. Sounds like it could 'possibly' be coming from the pilot
> > bearing. I replaced my clutch this spring but left the pilot bearing
> > alone because i didn't have a puller and the clutch I had in there only
> > had 20k or so miles on it. Assumed it would still be OK. Anyway, if I
> > start the engine warm, no sound. Looked at the Haynes troubleshooting
> > section, no mention of such a sound. Tried starting it cold in neutral
> > with the clutch engaged with the same results. Thoughts? Thanks.

Re: Loud grinding on start-up
 

If it makes noise when the clutch is engauged, it isn't the bearing
because it isn't moving then.

I would suspect a loose pressure plate bolt maybe.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Micah wrote:
>
> 258 YJ, Peugeot trans. When I start it cold, I get a loud metallic
> grinding sound. Rev the engine to 2,000 RPMs for a couple seconds and
> it goes away. Sounds like it could 'possibly' be coming from the pilot
> bearing. I replaced my clutch this spring but left the pilot bearing
> alone because i didn't have a puller and the clutch I had in there only
> had 20k or so miles on it. Assumed it would still be OK. Anyway, if I
> start the engine warm, no sound. Looked at the Haynes troubleshooting
> section, no mention of such a sound. Tried starting it cold in neutral
> with the clutch engaged with the same results. Thoughts? Thanks.

Re: Loud grinding on start-up
 

If it makes noise when the clutch is engauged, it isn't the bearing
because it isn't moving then.

I would suspect a loose pressure plate bolt maybe.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Micah wrote:
>
> 258 YJ, Peugeot trans. When I start it cold, I get a loud metallic
> grinding sound. Rev the engine to 2,000 RPMs for a couple seconds and
> it goes away. Sounds like it could 'possibly' be coming from the pilot
> bearing. I replaced my clutch this spring but left the pilot bearing
> alone because i didn't have a puller and the clutch I had in there only
> had 20k or so miles on it. Assumed it would still be OK. Anyway, if I
> start the engine warm, no sound. Looked at the Haynes troubleshooting
> section, no mention of such a sound. Tried starting it cold in neutral
> with the clutch engaged with the same results. Thoughts? Thanks.

Re: Loud grinding on start-up
 

If it makes noise when the clutch is engauged, it isn't the bearing
because it isn't moving then.

I would suspect a loose pressure plate bolt maybe.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Micah wrote:
>
> 258 YJ, Peugeot trans. When I start it cold, I get a loud metallic
> grinding sound. Rev the engine to 2,000 RPMs for a couple seconds and
> it goes away. Sounds like it could 'possibly' be coming from the pilot
> bearing. I replaced my clutch this spring but left the pilot bearing
> alone because i didn't have a puller and the clutch I had in there only
> had 20k or so miles on it. Assumed it would still be OK. Anyway, if I
> start the engine warm, no sound. Looked at the Haynes troubleshooting
> section, no mention of such a sound. Tried starting it cold in neutral
> with the clutch engaged with the same results. Thoughts? Thanks.

Re: Loud grinding on start-up
 

Micah wrote:

> Assumed it would still be OK.

It sounds like you ass-umed wrong.

Re: Loud grinding on start-up
 

Micah wrote:

> Assumed it would still be OK.

It sounds like you ass-umed wrong.

Re: Loud grinding on start-up
 

Micah wrote:

> Assumed it would still be OK.

It sounds like you ass-umed wrong.