Friday I changed all the belts (Except the recent power steering belt). Also changed the AC tensioner bearing,
Did a quick trip to the Waterberg .
Then on Saturday afternoon on a cold startup had a bit of a racket, sounded like a belt slipping but goes away after about 5 seconds. same Sunday morning , think I woke up the valley.
Last night checked belt, all ok, noise is on startup and disappears after a couple of seconds, lot louder with bonnet open
Spray belts with soap - just to see if one disappears - no - do notice something funny .....
take power steering belt off, noise still there
slacken alternator, noise still there
remove alternator belt, pulley spins without noise .
refit belt - noise back
It's a challenge to start , get back to engine fast enough to put a stethoscope and listen - thus can't really isolate pump or alternator.
took the alternator to get it serviced
However when I sprayed the soap water, the alternator pulley steamed, and when I touch it after startup it feels hot, not scalding hot so I think it might be the bearing spinning?
I hope they find the fault, else there is 2 things left, visco fan and water pump.
4.8 alternator
-
- Patrolman 1000+
- Posts: 1402
- Joined: 24 Feb 2014 15:33
- Full Name: Errol Wilken
- Nickname: Wilkie
- Home Town: Pretoria
- Current 4x4: 1999 4.5 GRX Nissan Patrol
2004 BMW 3.0D X5 - Home Language: Afrikaans
- Has thanked: 69 times
- Been thanked: 92 times
Re: 4.8 alternator
Andries how strong is your battery..?
what sometimes happen is your battery is getting old but has just enough power to start your car when cold and when the engines start the battery volts is down and the alternator picks it up and goes into full-charges mode
and your fan belt might just be a fraction to lose and hench the squelling noise
what sometimes happen is your battery is getting old but has just enough power to start your car when cold and when the engines start the battery volts is down and the alternator picks it up and goes into full-charges mode
and your fan belt might just be a fraction to lose and hench the squelling noise
- johanp
- Senior Member
- Posts: 135
- Joined: 21 Jul 2010 10:07
- Full Name: Johan Pheiffer
- Nickname: Johan
- Home Town: Pretoria
- Current 4x4: 2004 Patrol 4800 GRX
- Home Language: Afrikaans
- Location: Pretoria
- Has thanked: 1 time
- Been thanked: 26 times
Re: 4.8 alternator
I also recently replaced the belts on my Patrol and have the same noise when starting especially when it is cold outside.
I also replaced belts on my Ford bakkie and the belts screech at 2500rpm when it is cold outside.
Maybe the new belts are made from different material that causes this.
I also replaced belts on my Ford bakkie and the belts screech at 2500rpm when it is cold outside.
Maybe the new belts are made from different material that causes this.
-
- Patrolman
- Posts: 609
- Joined: 01 Feb 2010 07:42
- Full Name: Andries
- Nickname: None
- Home Town: Pretoorsdorp
- Current 4x4: 4.8 GL with hairdryer.
- Home Language: Afrikaans
- Has thanked: 28 times
- Been thanked: 38 times
Re: 4.8 alternator
FYI
I took the alternator to the autolec and he said there is nothing wrong with it, I wanted to agree as it spins freely, no noise . He suggested I refit and check the pump, I nearly agreed but the only red light for me is the fact that the pulley became so hot so quickly.
End of the day I said just replace the bearings and lets check it . My screeching is gone, let's hope it stays that way.
PS , one less thing to worry about ; alternator uses normal pulley and not a clutch one, one less thing to give trouble after a muddy / dusty ride.
I took the alternator to the autolec and he said there is nothing wrong with it, I wanted to agree as it spins freely, no noise . He suggested I refit and check the pump, I nearly agreed but the only red light for me is the fact that the pulley became so hot so quickly.
End of the day I said just replace the bearings and lets check it . My screeching is gone, let's hope it stays that way.
PS , one less thing to worry about ; alternator uses normal pulley and not a clutch one, one less thing to give trouble after a muddy / dusty ride.
Who is online
Users browsing this forum: No registered users and 40 guests