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Search: Posts Made By: compu_85
Forum: Diesel Discussion 09-16-2022, 03:14 PM
Replies: 15
Views: 537
Posted By compu_85
When I had my 3 piece driveshaft rebuilt I recall...

When I had my 3 piece driveshaft rebuilt I recall there was a forward mark on it. For those following along at home only the 1991 350SD and 350SDL have a 3 piece driveshaft. 1990s do not.

Perhaps...
Forum: Diesel Discussion 07-26-2022, 11:08 AM
Replies: 3
Views: 432
Posted By compu_85
Assuming the current draw is the same, this...

Assuming the current draw is the same, this should work fine.
Forum: Diesel Discussion 07-15-2022, 09:47 AM
Replies: 14
Views: 570
Posted By compu_85
You'd want to find an AC heater box to install...

You'd want to find an AC heater box to install inside the car. You can adapt the Mk4 variable displacement compressor to the Mk2 system with custom lines. Many have done this.

The Mk4 lines,...
Forum: Diesel Discussion 07-13-2022, 04:55 PM
Replies: 8
Views: 400
Posted By compu_85
Personally I'd avoid an ESP oil - that means it's...

Personally I'd avoid an ESP oil - that means it's got lower Zinc. Plus many of them are 5w30.

-J
Forum: Diesel Discussion 07-12-2022, 10:31 AM
Replies: 8
Views: 400
Posted By compu_85
Grade / weight doesn't matter. You just need to...

Grade / weight doesn't matter. You just need to look for something meeting MB spec 229.51.

Here's a list stolen from another site:

Rowe Hightec Synt RS DLS 5w30
Total INEO MC3 5w30
OEM...
Forum: Diesel Discussion 07-12-2022, 10:28 AM
Replies: 14
Views: 570
Posted By compu_85
You mean the 50hp, NA diesel is slow?!? :eek: ...

You mean the 50hp, NA diesel is slow?!? :eek:

If you want to go fast, find the AHU or 1Z TDI from a B4 Passat or A3 Jetta. Or even something newer if you want to adapt the motor mounts.

I'd...
Forum: Diesel Discussion 07-06-2022, 10:28 AM
Replies: 59
Views: 8,765
Posted By compu_85
MB had an optional trans cooler for W124s and...

MB had an optional trans cooler for W124s and W126 that were used for towing. It mounted where the OM603's engine oil cooler is, and had a thermal switch and electric fan to help when in traffic.
...
Forum: Diesel Discussion 02-15-2022, 07:57 AM
Replies: 4
Views: 1,048
Posted By compu_85
I'd venture that a standard fluid with LS...

I'd venture that a standard fluid with LS additive would be fine.

What do the W124 / W126 "standard" limited slip differentials call for?

-J
Forum: Diesel Discussion 02-14-2022, 10:18 AM
Replies: 9
Views: 667
Posted By compu_85
Isn't that fuel around 60 cetane? It's really...

Isn't that fuel around 60 cetane? It's really good stuff.
Forum: Tech Help 02-11-2022, 03:09 PM
Replies: 1
Views: 429
Posted By compu_85
Turn the key on, push the horn button, and see...

Turn the key on, push the horn button, and see which wire is power and which is ground :)

-J
Forum: Tech Help 02-11-2022, 10:09 AM
Replies: 2
Views: 438
Posted By compu_85
Remember some fuses are after a switch - eg the...

Remember some fuses are after a switch - eg the parking lights and headlights. The fuse will only have power when the switch is on.

-J
Forum: Diesel Discussion 02-11-2022, 10:07 AM
Replies: 10
Views: 394
Posted By compu_85
Start by comparing them. Turn a bunch of stuff on...

Start by comparing them. Turn a bunch of stuff on and measure the voltage drop. There should be none. If there is, inspect the main ground cable :)

You can do the same test from the alternator...
Forum: Diesel Discussion 02-10-2022, 12:11 PM
Replies: 9
Views: 410
Posted By compu_85
The Prius doesn't have an alternator (or a...

The Prius doesn't have an alternator (or a starter motor for that matter). If the 12v battery is dead, the computers won't power up, turn on the high voltage system, and engage I think MG2 to start...
Forum: Diesel Discussion 02-10-2022, 12:05 PM
Replies: 10
Views: 394
Posted By compu_85
Don't measure resistance, measure voltage under...

Don't measure resistance, measure voltage under load. Say between the alternator case and the ground wire you're testing. It should be 0 when there's load on the wire (or just a few 10s of...
Forum: Diesel Discussion 02-09-2022, 12:49 PM
Replies: 10
Views: 394
Posted By compu_85
The issue with bad grounds is that nothing will...

The issue with bad grounds is that nothing will make sense. The current will find a way - like if the EDS computer had a bad ground, perhaps it's sending some current through the tachometer now? Or...
Forum: Diesel Discussion 02-07-2022, 12:54 PM
Replies: 10
Views: 394
Posted By compu_85
Sounds like you need to start checking all your...

Sounds like you need to start checking all your grounds!
Forum: Diesel Discussion 02-06-2022, 10:20 PM
Replies: 2
Views: 288
Posted By compu_85
The OVP relay powers the EDS (engine) computer,...

The OVP relay powers the EDS (engine) computer, and several other control units. Does your car idle at the correct speed when the tach isn't working?

-J
Forum: Diesel Discussion 02-06-2022, 11:58 AM
Replies: 10
Views: 525
Posted By compu_85
Does the line coming off of it hook into a vacuum...

Does the line coming off of it hook into a vacuum solenoid, or does it loop around to the high pressure side of the turbo somehow?

The original .971 turbo has a vacuum wastegate. It's normally...
Forum: Diesel Discussion 02-06-2022, 11:53 AM
Replies: 33
Views: 953
Posted By compu_85
On my .970 the turbo spools very quickly, there's...

On my .970 the turbo spools very quickly, there's basically no lag.

If you floor the go pedal without pressing the kickdown switch, does the trans shift from 1-2 or 2-3?

Granted my car is...
Forum: Diesel Discussion 02-03-2022, 01:58 PM
Replies: 33
Views: 953
Posted By compu_85
Isn't the wastegate on the .971 controlled by the...

Isn't the wastegate on the .971 controlled by the EDS? And it will give you no boost if it senses that the EGR isn't working?

-J
Forum: Diesel Discussion 02-03-2022, 09:59 AM
Replies: 33
Views: 953
Posted By compu_85
I wonder if there's a problem in the EDS module...

I wonder if there's a problem in the EDS module itself, like a 5v reference power supply is dead?

It's also possible one of the sensors is shorted out, dragging a reference voltage rail down?
...
Forum: Diesel Discussion 02-01-2022, 09:49 AM
Replies: 16
Views: 782
Posted By compu_85
I have a larger alternator on my car, which...

I have a larger alternator on my car, which stresses the belt tensioner more at idle.

Installing a clutched alternator pulley will make the drive belt last longer, the shock last longer, the...
Forum: Diesel Discussion 01-31-2022, 11:06 AM
Replies: 33
Views: 953
Posted By compu_85
Now that you know what the codes are, clear them...

Now that you know what the codes are, clear them and see if they come back. Then you'll know what the computer is currently upset about.
Forum: Diesel Discussion 01-31-2022, 10:53 AM
Replies: 16
Views: 782
Posted By compu_85
I had the *identical* sound coming from my...

I had the *identical* sound coming from my 350SDL. I thought it was the vacuum pump or timing chain. Spend hours trying to figure it out.

The problem ended up being the bearing in the belt...
Forum: Diesel Discussion 01-25-2022, 04:03 PM
Replies: 33
Views: 953
Posted By compu_85
I tried to look up W140 wiring diagrams, but...

I tried to look up W140 wiring diagrams, but could't find one in an easily readable format. I'll be able to look more later.
Forum: Diesel Discussion 01-25-2022, 12:35 PM
Replies: 33
Views: 953
Posted By compu_85
On the W126 the Tach gets its signal from the EDS...

On the W126 the Tach gets its signal from the EDS computer. So if the tach works, the pickup is good and the computer should be controlling idle speed.
Forum: Diesel Discussion 01-24-2022, 11:23 AM
Replies: 3
Views: 284
Posted By compu_85
I'd stay away from NGK plugs. On the VW TDI...

I'd stay away from NGK plugs. On the VW TDI anyway, we found they don't get as hot as the Bosch ones, and take longer to get up to temperature.

-J
Forum: Diesel Discussion 01-24-2022, 11:20 AM
Replies: 28
Views: 1,046
Posted By compu_85
VW has used hot film MAFs for some time. It's...

VW has used hot film MAFs for some time. It's basically a PCB track. When the oil gets on it, or dust gets on it, the track overheats and damages the PCB. Then the sensor reads very low all the time....
Forum: Diesel Discussion 01-24-2022, 11:10 AM
Replies: 33
Views: 953
Posted By compu_85
Code 7 is why you have a low idle most likely....

Code 7 is why you have a low idle most likely. Does the tach in the cluster work?

Now that you've pulled codes, you should clear them and see which ones come back. Some of those might be old.
...
Forum: Diesel Discussion 01-19-2022, 11:54 AM
Replies: 6
Views: 347
Posted By compu_85
With the engine cold and off, try moving the...

With the engine cold and off, try moving the linkages by hand under the hood. See if it returns to the stop easily.

The idle speed being wrong might be a bad ECU temp sensor? Or other fault. The...
Showing results 1 to 30 of 500

 
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