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03-05-2011, 10:23 PM
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#1 | |
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AF Newbie
Join Date: Mar 2011
Location: Phoenix, Arizona
Posts: 3
Thanks: 2
Thanked 0 Times in 0 Posts
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02 Lincoln LS Vacuum leak
My 02 Lincoln LS seems to have a vacuum leak coming from behind or underneath the intake manifold. The car is a 3.0 litre V6 and I can hear the leak inside the vehicle coming from the driver side. It sounds like the defrost is on and underneath the hood sounds like an air leak. The leak seems to get louder as I accelerate and the car sputters as if the ratio of gas to air is off. Can anyone help me troubleshoot this problem and give me an idea of cost to fix it? I appreciate your help in advance.
Sincerely, Jac |
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03-06-2011, 09:21 AM
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#2 | |
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AF Regular
Join Date: Nov 2003
Location: Gulfport, Mississippi
Posts: 394
Thanks: 0
Thanked 35 Times in 34 Posts
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Re: 02 Lincoln LS Vacuum leak
Search, it's one of the bigger threads here. It's a common problem with the PCV hose/elbow.
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03-06-2011, 09:41 AM
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#3 | |
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AF Enthusiast
Join Date: Jul 2005
Location: troy, Ohio
Posts: 2,313
Thanks: 2
Thanked 173 Times in 171 Posts
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Re: 02 Lincoln LS Vacuum leak
I've gone as far as to use a deflated balloon and lay it all around intake gasket, or any other vacuum hose. When hissing quits, and balloon is sucked in against the leak, you have found it...
__________________
Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles- |
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| The Following User Says Thank You to brcidd For This Useful Post: |
JOHNSJ22 (03-06-2011)
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03-06-2011, 12:29 PM
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#4 | |
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AF Enthusiast
Join Date: Mar 2008
Location: garner, North Carolina
Posts: 3,579
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Re: 02 Lincoln LS Vacuum leak
1) Remove Air filter and wrap with glad wrap, and put back filter back in.
The idea is to block all the air Intake. 2) Remove brake booster vacuum hose from the brake booster. 3) Light a Black & Mild cigar and blow smoke into the Brake booster vacuum hose going into the intake, put thumb over hose end in between puffs of smoke. 4) Focus on PCV, EGR, and Intake system for smoke leaks. Do a AF-serarch on DTC P0171 Also, see Similar Threads at the bottom of yours. Last edited by danielsatur; 03-06-2011 at 01:08 PM. |
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| The Following User Says Thank You to danielsatur For This Useful Post: |
JOHNSJ22 (03-06-2011)
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