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#1
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Turbo is whistling, down on boost.......
1985 300TD {only one T please!}
At first I thought I had a wheel bearing squealing, but I finally realized it is the turbo whistling during boost. I am also down on boost pressure, from 10.5 to about 5.5 to 6. Car is noticeably slower of course. I have: *Removed and inspected boost line from manifold all the way to alda. No leak in line or at connection points. {overboost bypassed} * Replaced waste gate hose. Had a few cracks in it, but that wasn't the issue apparently. *Removed air cleaner and with inspection mirror looked for anything visually amiss with the turbo or associated piping. *Air cleaner U-tube sealing correctly. *No play in forward impeller inside the turbo. *I have never messed with waste gate or anything having to do with this. I don't drive this wagon all the time. I just began to notice this noise, and finally realized what it was. Haven't done anything under the hood prior to this happening. I would welcome any ideas on a course of action from here.......
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#2
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The ARV is at fault. Disconnect the vacuum and plug up the line. Drive around and report back.
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1983 123.133 California - GreaseCar Veg System |
#3
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Remind me, what exactly is the ARV {air recir. valve?} EGR???
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#4
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Yes. Air Recirculating Valve. It is that growth on the front housing of the turbo with a vacuum line attached to it. The function is to lower boost pressure so that the exhaust backpressure is higher and more exhaust flows through the EGR.
I tried looking for pic, but don't have one available.
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1983 123.133 California - GreaseCar Veg System |
#5
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Quote:
There is that evil falic looking device! I had put a bb into the vac line to that a couple years ago. Does that have any bearing on this what-so-ever? Where's a blocking plate when you need it......
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#6
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The BB should of cut off the vacuum, thus rendering it useless. Try unplugging though, maybe your still getting vacuum in there. Or else the ARV somehow stuck open.
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1983 123.133 California - GreaseCar Veg System |
#7
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Quote:
OK, gonna need some splaining please. I already had a BB in the upper line to the EGR appendage. So I disconnected this bottom line gong to? and plugged both ends and I have full boost now!! Nice. But what had happened, and what have I bypassed? This is of course an '85 model with about a million vac lines, and that line comes from a solenoid on the driver's fender over to the above connection point at the turbo area. What exactly is that where the vac line and green T are going to? And as an awful aside, I sure wish I hadn't slammed my hood down on my phone! It didn't fair well at all.....
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#8
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Vacuum was getting past the BB, the BB was acting like a check valve to keep that leaked vacuum in the ARV and holding it open.
Check the vacuum and wiring diagrams, there is gobs of hoses related to the EGR and ARV that can be safely removed. |
#9
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Isn't that the second time you've slammed your hood on a phone?
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1985 500SL Euro w/ AMG bits 130k 1984 300SD Turbodiesel 192k 1980 240D Stick China 188k 2001 CLK55 AMG 101k 2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!! |
#10
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Quote:
The one I plugged today was the lower line going to whatever that part of the turbo assy is..........
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#11
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Quote:
Mine didn't crack the display but cracked the lower buttons. {Samsung fake-Iphone}
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#12
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daw_two Germantown, TN Links: Sold last car --- 05/2012 1984 300D Light Ivory, Red interior Cluster Needles Paint New Old Stock (NOS) parts Past: 3/2008 1986 300SDL "Coda" 04/2010 1965 190D(c) "Ben" & many more |
#13
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Quote:
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daw_two Germantown, TN Links: Sold last car --- 05/2012 1984 300D Light Ivory, Red interior Cluster Needles Paint New Old Stock (NOS) parts Past: 3/2008 1986 300SDL "Coda" 04/2010 1965 190D(c) "Ben" & many more |
#14
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How on earth did you find the time Jimmy?
Been missin' you here. |
#15
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Quote:
I have an EGR kit if you want it, just PM me. Also I can get a pic of my '85s underhood so you can see what to bypass/remove and where.
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I'm not a doctor, but I'll have a look. '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG] |
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