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Old 11-19-2006, 09:15 AM
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Join Date: Nov 2006
Location: Ventura County, So Cal
Posts: 62
I'm Back.....long.. new 1986 300 SDL with issues

Good morning all............

I have returned to Ca. from Virginia with the 1986 300 SDL I bought in this thread. I did it

The car was not quite as good as described but I did get the seller to put a brand new set of Michelins on it. Overall I am very pleased with it. The car ran very well going across country and returned 26 MPG including going through the intense storms across Tenn. and Ar. and then a constant headwind from Ok. through most of Az. All the while pusing 75 to 80.

The power is quite suprising after it reaches 15 - 20 mph. It just pulls and pulls (until the fuel starvation kicks in, see below). It is smoother then I expected.

There are a few mechanical issues including fuel starvation going uphill, into the wind, at 80 mph. On flat ground doing 80 - 85, no problem maintaining speed. Fuel filters are ordered and I will do the lines if that doesn't fix it.

The steering wheel shakes when applying the brakes at speed, rotors and steering dampener are ordered. The brake pads look brand new F & R but the mech. didn't change or machine the rotors.

It used some oil coming across and appears to be a turbo seal issue. If it is burning it, it is diluted enough that there is no blue smoke (i. e. a slow but steady stream from the turbo seals). Blow-by is non-existant, the cap just sits there loose, with no movement, when the engine is warm and running, revved up too. Oil is weeping at the joints of the intake pipe that crosses the engine to the intake manifold.

The issue I would like to address first and ask your help diagnosing is a combined issue of the criuse control and tach. The tach constantly reads about 50% too fast. It shows 1100 at idle and 5500 rpm at 70 mph . It goes beyond 6000 rpm when floored and the trans shifts at it highest shift points. The tach is always smooth and steady, just reading too fast.

The criuse control either works correctly (holding the car at 80 mph into a head wind) or doesn't work at all. It always works after first starting the car and will work for varying length's of time from 15 minutes to a couple of hours. All the different functions of the criuse work correctly when it is working.

The reason I have lumped them together is that they are on the same feeder circuit (fuse). The fuse is good and when removing it neither function works at all. I am hoping you folks can point me in the right direction and towards a simple fix to straighten them out.

I plan on removing the cluster next week to check for grounds but my gut feeling is that the problem(s) is somewhere else. All the other dash functions work properly.

I have above average mechanical abilities and tools. I was a professional mechanic years ago and went to diesel engine school.

Thank you and I look forward to your responses

__________________
Later.........Gregg

(86) 300 SDL
(00) GMC Yukon XL 4X4
(97) C5 Corvette
(02) BMW R1150GS Adventure
(00) KAW Nomad 1500 FI
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  #2  
Old 11-19-2006, 03:19 PM
whunter's Avatar
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Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,359
Answer:

Quote:
Originally Posted by Mr. G View Post
Good morning all............

I have returned to Ca. from Virginia with the 1986 300 SDL I bought in this thread. I did it

The car was not quite as good as described but I did get the seller to put a brand new set of Michelins on it.
Overall I am very pleased with it. The car ran very well going across country and returned 26 MPG including going through the intense storms across Tenn. and Ar. and then a constant headwind from Ok. through most of Az. All the while pusing 75 to 80.

The power is quite suprising after it reaches 15 - 20 mph.
It just pulls and pulls (until the fuel starvation kicks in, see below). It is smoother then I expected.

There are a few mechanical issues including fuel starvation going uphill, into the wind, at 80 mph. On flat ground doing 80 - 85, no problem maintaining speed.
Fuel filters are ordered and I will do the lines if that doesn't fix it.

The steering wheel shakes when applying the brakes at speed, rotors and steering dampener are ordered.
The brake pads look brand new F & R but the mech.
didn't change or machine the rotors.

It used some oil coming across and appears to be a turbo seal issue.
If it is burning it, it is diluted enough that there is no blue smoke (i. e. a slow but steady stream from the turbo seals).
Blow-by is non-existant, the cap just sits there loose, with no movement, when the engine is warm and running, revved up too.
Oil is weeping at the joints of the intake pipe that crosses the engine to the intake manifold.
I have above average mechanical abilities and tools. I was a professional mechanic years ago and went to diesel engine school.

Thank you and I look forward to your responses
Some threads for you to read.

Fuel Delivery:

MB diesel filtration, how it works.
http://www.peachparts.com/shopforum/diesel-discussion/141211-mb-diesel-filtration-how-works.html#post1055075

fuel filter change
http://www.peachparts.com/shopforum/diesel-discussion/112664-fuel-filter-change-post824006.html

Diesel filters, no tank strainers please.
http://www.peachparts.com/shopforum/diesel-discussion/140349-diesel-filters-no-tank-strainers-please-post1046422.html?posted=1

I'm baffled and at wit's end!?!?!?!?!
I'm baffled and at wit's end!?!?!?!?!

Algae/Fungus fixation...
Algae/Fungus fixation...

Braided fuel lines weep. 1984 300TD turbo
Braided fuel lines weep. 1984 300TD turbo

Check out this fuel pickup screen
Check out this fuel pickup screen

300SD Fuel Filter Replacement Instructions
300SD Fuel Filter Replacement Instructions

Biobor, what is it, why do I need it???
http://www.peachparts.com/shopforum/diesel-discussion/105304-biobor-what-why-do-i-need.html#post723857

Filters, Fungus, Biocide, etc.
http://www.peachparts.com/shopforum/diesel-discussion/115952-filters-fungus-biocide-etc-post823378.html

Algae Clogged Filter Pic StarTron WORKS !
Algae Clogged Filter Pic StarTron WORKS !


Brake:

TYPICAL 'RUBBER' BRAKE HOSE FAILURES
Click the picture to really see the failure.
http://www.cebcobrakes.com.au/html/s02_article/article_view.asp?id=117&nav_cat_id=137&nav_top_id=61&dsa=1

Incredible data, a must read.
Brakes FAQ Home Volvo Maintenance FAQ for 7xx/9xx/90 Cars
http://www.volvoclub.org.uk/faq/Brakes.html

gruesome 617 engine pics - don't look if you have a weak stomach
Brake FAIL: gruesome 617 engine pics - don't look if you have a weak stomach

Industry Adopts Brake Fluid Replacement Guidelines By Bill Williams, Technical Contributor
http://www.babcox.com/editorial/bf/bf50412.htm

Brake flush every two years?! U'r kidding right?
Brake flush every two years?! U'r kidding right?

Why should I flush my brake fluid every year, you ask?
http://www.peachparts.com/shopforum/diesel-discussion/38856-why-should-i-flush-my-brake-fluid-every-year-you-ask.html#post220599

Brake bleeder recommendation
http://www.peachparts.com/shopforum/tech-help/72839-brake-bleeder-recommendation.html#post455818

Power Bleeder or what?
http://www.peachparts.com/shopforum/diesel-discussion/103226-power-bleeder-what.html#post707359

Brake bleeder - power bleeder Homemade
Brake bleeder - power bleeder Homemade

WARPED ROTORS
http://www.peachparts.com/shopforum/diesel-discussion/12589-warped-rotors-post1105426.html

Brake squeal fixes for new rotors, calipers, pads?
Brake squeal fixes for new rotors, calipers, pads?

Can't remove rear brake rotor.
Can't remove rear brake rotor.

Is it bad to just replace one brake rotor...
http://www.peachparts.com/shopforum/diesel-discussion/138773-bad-just-replace-one-brake-rotor.html#post1029208

brake pads/caliper--need help!
http://www.peachparts.com/shopforum/diesel-discussion/138115-brake-pads-caliper-need-help.html#post1022773

New disks old pads
http://www.peachparts.com/shopforum/diesel-discussion/123709-new-disks-old-pads.html#post888590

brake problems- I really, really, dislike brake work!
http://www.peachparts.com/shopforum/diesel-discussion/33381-brake-problems-i-really-really-dislike-brake-work.html#post184248

Frau Frankenbenz not stopping on a dime
http://www.peachparts.com/shopforum/diesel-discussion/141573-frau-frankenbenz-not-stopping-dime-post1059782.html

Eaten alive! My brakes that is...
http://www.peachparts.com/shopforum/showthread.php?p=666235

How long do your brake pads last?
http://www.peachparts.com/shopforum/diesel-discussion/39948-how-long-do-your-brake-pads-last.html#post227992

Removing brake disk 300D. Real -vs-Manuel
http://www.peachparts.com/shopforum/diesel-discussion/90138-removing-brake-disk-300d-real-vs-manuel.html#post593769

Weak brakes, but good pedal feel.
http://www.peachparts.com/shopforum/diesel-discussion/135096-weak-brakes-but-good-pedal-feel.html#post993172

Brake bleed disaster
http://www.peachparts.com/shopforum/diesel-discussion/64278-brake-bleed-disaster.html#post396205

Disappearing Brake Fluid
http://www.peachparts.com/shopforum/diesel-discussion/139187-disappearing-brake-fluid.html#post1033187

Brake Fluid Blowout
http://www.peachparts.com/shopforum/diesel-discussion/110639-brake-fluid-blowout.html#post772785

Defective new master cylinder? (long)
http://www.peachparts.com/shopforum/diesel-discussion/112993-defective-new-master-cylinder-long.html#post798232

HOW do you attach the Resevoir to the Master Cylinder??
http://www.peachparts.com/shopforum/diesel-discussion/142292-how-do-you-attach-resevoir-master-cylinder.html#post1066676

W126 master cylinder and reservoir
http://www.peachparts.com/shopforum/diesel-discussion/116363-w126-master-cylinder-reservoir.html#post826695

W123 Dragging brake question
http://www.peachparts.com/shopforum/diesel-discussion/136186-w123-dragging-brake-question.html#post1003736

Need brake advice / calipers not releasing
http://www.peachparts.com/shopforum/diesel-discussion/97241-need-brake-advice-calipers-not-releasing.html#post656713

Brake system bleeding, master cylinder bleeding
http://www.peachparts.com/shopforum/general-information/149045-brake-system-bleeding-master-cylinder-bleeding-damage-warning.html#post1127978


Have a great day

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