|
07-28-2015, 11:47 AM
|
#1
|
Member
Join Date: Jul 2014
Location: Crossville, TN
Posts: 61
|
Turbo Problems? Any mechanics out there?
2007 Chevy LBZ 3500 6.6L diesel, dually, CC, LB, 4x4, 134,000 miles.
At the end of our 2000 mile trip, coming through the mountains on US-23, KY to VA, the truck started overheating on uphills. Heard a whining sound (not a whistle) and assumed the fan clutch. Had it replaced when we got home.
Downhill and flat roads, temps were normal.
Still whining, getting worse.
Starts when engine is warmed up, about 160+.
Whines on moderate acceleration, stops immediately when you let off the gas.
Does not whine faster as RPM increases but it does get louder.
Does not do it in PARK or while brake is held, revving up the engine.
Braking, turning or switching the AC on/off has no effect.
If this video uploads, listen to the background. Last 5 seconds of video, it gets louder. Right after my friendly GPS says "Speed Warning" LOL
https://dl.dropboxusercontent.com/u/...2019.57.10.mp4
|
|
|
07-28-2015, 02:27 PM
|
#2
|
Senior Member
Join Date: Apr 2011
Location: Arrey,
Posts: 2,368
|
racin500, Howdy;
A good place to start would be to inquire here
http://www.dieselplace.com/
Lots of good stuff there for your specific needs.
hankaye
__________________
Striving for a less complicated life since 1949 ...
Home: 2008 Cougar 278 RKS
T.V.: 2004 F-250 4X4, Level III BulletProofed , Detroit Tru-Track Differential (915A550)
Dog: 2006 Border Collie (Rascal) aka Maximum fur dispersal unit. (08/04/2006 - 12/16/2017) RIP.
|
|
|
07-28-2015, 02:56 PM
|
#3
|
Senior Member
Join Date: Mar 2014
Location: colorado
Posts: 209
|
Quote:
Originally Posted by hankaye
racin500, Howdy;
A good place to start would be to inquire here
http://www.dieselplace.com/
Lots of good stuff there for your specific needs.
hankaye
|
X2. I have learned a lot about my truck there.
__________________
2007.5 Silverado 3500 HD,DRW, LTZ red, afe II airbox w/ torque tube, transferflow 56 gal replacement tank,
banks speed brake, transgo jr shiftkit, aux trans cooler, b&w companion hitch.
2010 Fuzion FZ 302 has 12ply F-loads, Dexter ez-flex w/ wet bolts, 6 volt Deka GC 15 batteries, 1 gen battery, solarpanels, leds inside, replaced clear textured door glass with tinted, 87 gallons of loc-tite.
Decals removed.
AKA CONFUZION / PORH HONKY.
|
|
|
07-28-2015, 04:16 PM
|
#4
|
Senior Member
Join Date: Jul 2014
Location: Nevada
Posts: 2,695
|
Sounds like a loose clamp on the engine air intake side between the turbo and the engine. The turbo is pushing air, which causes a whistle through the loose clamp at higher boost pressures, possibly black smoke (not enough air for the fuel delivered) and a loss of power. These clamps should be checked occasionally.
__________________
Desert185 🇺🇸 (Retired Chemtrail vendor)
-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.
|
|
|
07-30-2015, 06:28 PM
|
#5
|
Member
Join Date: Jul 2014
Location: Crossville, TN
Posts: 61
|
Quote:
Originally Posted by hankaye
racin500, Howdy;
A good place to start would be to inquire here
http://www.dieselplace.com/
Lots of good stuff there for your specific needs.
hankaye
|
Joined, already getting some good advice...thanks.
|
|
|
07-30-2015, 06:33 PM
|
#6
|
Member
Join Date: Jul 2014
Location: Crossville, TN
Posts: 61
|
Quote:
Originally Posted by Desert185
Sounds like a loose clamp on the engine air intake side between the turbo and the engine. The turbo is pushing air, which causes a whistle through the loose clamp at higher boost pressures, possibly black smoke (not enough air for the fuel delivered) and a loss of power. These clamps should be checked occasionally.
|
Going to look at the connection this weekend. A couple others think it's an exhaust/turbo leak also because of the fact it doesn't happen until the engine hits about 175 degrees. Heat causing pipe to expand.
|
|
|
07-30-2015, 06:42 PM
|
#7
|
Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,347
|
Quote:
Originally Posted by Desert185
Sounds like a loose clamp on the engine air intake side between the turbo and the engine. The turbo is pushing air, which causes a whistle through the loose clamp at higher boost pressures, possibly black smoke (not enough air for the fuel delivered) and a loss of power. These clamps should be checked occasionally.
|
Yup! Lose a boot on the CAC and you lose boost. In a turbocharged Diesel engine the amount of air sent to the combustion chamber will affect power and such. Your in an "over fueling" condition and heat builds up real fast.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|