1HD-T idle shake

[spartacus]

Join Date: Mar 2008
Posts: 8



I have a '92 HDJ81v with a 4 speed a442f transmission, and 130,000 kms on it. This past few weeks i've noticed that after driving the truck for about an hour, you will feel that the body shakes/vibrates as you stop the truck with the gear lever still in the " D " position, or even when in neutral with your foot still on the brake pedal as you shift to " D " position the body will shake continously as if the truck wanted to move.then releasing the brakes slightly it continues to shake until you put slight pressure on the accelerator pedal.
i also noticed that when i accelerate harder past 2000 rpm, the battery indicator light, at/p, oil and other idiot lights on the instrument panel including the red overboost light comes on or sometimes blinks... is this related to the alternator?

cheers

 

[dieseldad]

You would be better off starting a new thread I think. As for your shaking what is the idle at.? I have the exact same truck and recently fixed my low idle shake by removing the acsd-it was also leaking. As for the dash lights mine does this occasionally and all the info I have read seems to indicate that the alternator is going. I am going to inspect the brushes first before condeming the alt. Just waiting for better weather first.
good luck.

 

[spartacus]

It normally idles at 800 rpm with the a/c on, 650 rpm when in " D " position but when used for about an hour with mix city and highway driving you will notice that the rpm goes down to 400 - 500 rpm with a noticeable body shake while the shift lever is at " D " position in stop and go traffic.
How did you removed the acsd? is there any other parts needed to be replaced?
thanks..

 

[thedoctorhunting]

I have a 1991 HDJ81 that had ~ 60,000 km on it when I purchased it. I found the IP had many minor diesel leaks and the vehicle was very difficult to start and keep running at temperatures < -15 C and I therefore had the IP rebuilt at GCL in Calgary. I asked GCL to remove the ACSD and replace with a blanking plate, and they did so with no problems.
I also have a Wilson switch installed for the Glow Plugs.

This is my second winter with the truck and I have now found that it starts (immediately) down to -12 C without using the Glow Plugs and idles good within about 10 seconds after starting at that temp and not using the glows.
I plan on using the Glow plugs when it is that cold but I just wanted to see if it would start without them. I have also started the truck after being left out at -30 C and found I had to give it about 15 seconds on the Wilson, and then it started ok, and I gave it about another 15 seconds on the glows while it was running, it idled fine after about 10 seconds. At this temperature I found that I needed to pull the throttle out a bit in order for it to warm up. At temperatures down to ~ -10 C I find that I do not need to play with the throttle, just start it and let it warm up.
I have no regrets in getting the ACSD removed, the truck runs great at low temps, and also ran great over the summer, I get between 22 - 25 mpg (imperial).
I have the manual 5 speed trans, and after warming up the idle is set to ~ 850 rpm.
GCL told me that there is a problem sometimes with something coming loose in the ACSD that can wreck the IP and that removing it is a good idea.

 

[spartacus]

good day, can someone post a picture of the IP with a blocked ACSD? do i have to remove the lever arm that touches the ACSD pluger?
thanks