alternator fried?

[monton]

I was driving home yesterday in the rain and my windshield wipers started going really slow... then the stereo cut out... then the clock... then all my gauges. When I pulled into my parking stall and turned the ignition off and pulled the key out, the engine kept running. I had to stall it to shut it down.

I disconnected the battery and it is still sitting there. I think this is the alternator, however, I find it strange that the motor didn't shut off. Has anyone encountered this? Anyone know where I can find a 24 volt alternator in or around Vancouver? I think that 4wheelauto might stock them, I'm not sure.

Any info would be greatly appreciated.

thanks,
monton

 

[84BJ42]

I'm no diesel expert, but to try and answer the motor comment, diesel engines ignite the fuel by compression, and are not dependant on power from the alternator/battery for spark to keep the motor running. I would assume whatever system (EDIC) shuts off the motor requires electricity to operate.

 

[70sguy]

Hmmm... The Alternator may have given up the ghost but usually the charge lamp goes on before that and the amp gauge drops. Did you check your fusible links at the 24volt terminal? Grounds?
If we are talking about an HJ61 then there is no EDIC. There is a VSV that controls a shutter in the intake, if it has power then your engine will run, take power away and the VSV (valve) opens and allows vacuum to access the diaphragm and the engine shuts down.

If you end up needing a new Alternator we have Used 12H-T alts on the shelf as well as reman alts. Located in Abbotsford.

 

[Tapage]

The 12H-T and 2H alternator are the same .. ? ( same part number . ? )

In my case the first time thta my alternator dies .. the bat light comes on at first, somy bat keep my stereo and other electril stuff function until I go to the alternator shop to repair it.

 

[monton]

70'sguy, I'm not quite sure what you mean by VSV or EDIC.

Tapage, are you telling me that when your alternator went it did not act the same as mine?

Still trying to figure this out.

Monton.

 

[Greg_B]

70'sguy, I'm not quite sure what you mean by VSV or EDIC.

Tapage, are you telling me that when your alternator went it did not act the same as mine?

Still trying to figure this out.

Monton.

Strange.

70'sguy meant that on your 12HT you have a Vacuum Switching Valve (VSV) which requires power to the VSV to keep the engine running. Turning off the key cuts power to the VSV, which allows vacuum through to the vacuum pot which closes the intake shutter (the pot is a small 2.5" round disc to the side of your intake manifold). If you lost power completely to the vehicle (ala main fusible links) your vehicle would have shut down at that time. One reason your might not have shut down is no vacuum. Perhaps your alternator really bit the big one, and also took the splines to the vacuum pump. Vacuum is created buy the oil vanes in the vacuum pump, which is driven off the rear of the alternator shaft.

How was your braking when this all happened? Was the pedal hard to push, and extra effort needed to stop?

Do you have a voltmeter handy to check battery voltage?

This is on an HJ61...correct?

hth's

gb

 

[monton]

Yes this is HJ61 12H-T. The braking was fine, it didn't change. I have checked the voltage and have full voltage in both batteries.

 

[Tapage]

Tapage, are you telling me that when your alternator went it did not act the same as mine?

Yap ..

But the vaccum issue is also a option .. to check. Maybe your vaccum pump didn't died but did you check the vaccum lines .. or the vaccum on your VSV .. ?

In my case 2H I usea EDIC .. of course if I haven't good alternator I can't shut off the engine .. or if the EDIC loose V try to shut off my engine ..

so did you check the V and AMP on your alternator under load ( AC, stereo, lights .. etc ) .. ?