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Volkswagen Passat 2005 and earlier

8249 messages,  Last post on Nov 11, 2009 at 6:16 AM

You are in the Volkswagen Passat Forum. Your Hosts are pat & karens

What is this discussion about? Volkswagen Passat, Sedan, Wagon


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#8225 of 8249
Safefy, passat better? by yuliang
Jul 12, 2009 (7:20 pm)
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For safety, is passat better than fusion and fusion better than accord?
 
Also, how will passat take care of engine sluge issue if I bought a second hand passat from dealership and could not approve all oil change?
#8226 of 8249
engine sludge is only for 1.8T engine? by yuliang
Jul 12, 2009 (7:22 pm)
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is that 1.8T engine the only one met sluge problem? Does anyone meet this problem with a 05 TDI engine? Thanks.
#8227 of 8249
Diminishing Fuel Economy by tomj2
Jul 13, 2009 (3:46 pm)
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Own a 2003, 1.8T, 60K miles. Gas mileage has declined about 25% in last year. Car runs perfect and even had VW look at it. Found nothing wrong. Use Premium gas. Any ideas?
#8228 of 8249
Re: Diminishing Fuel Economy [tomj2] by jasonallison
Jul 14, 2009 (6:22 am)
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Replying to: tomj2 (Jul 13, 2009 3:46 pm)

I was told to always use premium gas. Check your manual. I owned a v6 GLS wagon. Your turbo will be effected even more. You should see significant drop in HP
#8229 of 8249
Re: Diminishing Fuel Economy [jasonallison] by tomj2
Jul 14, 2009 (7:11 am)
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Replying to: jasonallison (Jul 14, 2009 6:22 am)

Thanks for reply, Jason. I've always used premium but it has still lost fuel economy.
#8230 of 8249
question for tomj2 by krzyss
Jul 14, 2009 (8:31 am)
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Have you changed tires?
What about air filter?
Tire pressure?
Wheel bearings?
Stuck caliper?
Stuck hand brake?
 
I think I run out of ideas.
 
Krzys
 
PS One more: different oil?
#8231 of 8249
Re: question for tomj2 [krzyss] by tomj2
Jul 14, 2009 (3:40 pm)
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Replying to: krzyss (Jul 14, 2009 8:31 am)

No to all of the above. VW checked it over. I figure that as a dealer, they were dying to find something wrong...
#8232 of 8249
Sludge question by lisava
Jul 14, 2009 (6:33 pm)
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So if there is a Passat that did have some sludge issues at 45k miles and the dealer found oil output was low and replaced the oil pump, assuming from here on out all future oil changes will be done in a timely manner with appropriate synthetic oil, any reason to be concerned about the engine's future?
#8233 of 8249
Re: Diminishing Fuel Economy [tomj2] by altair4
Jul 15, 2009 (2:58 am)
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Replying to: tomj2 (Jul 14, 2009 7:11 am)

O2 sensors going bad?
Thermostat not fully closing?
Vacuum leak somewhere?
 
At some point, all these can occur and not show up on the OBD2.
#8234 of 8249
Re: Diminishing Fuel Economy [altair4] by tomj2
Jul 15, 2009 (6:01 am)
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Replying to: altair4 (Jul 15, 2009 2:58 am)

Those are reasonable questions. May be worth looking into although I would hope VW would have picked them up. Would a bad O2 sensor cause it to fail an emissions test? It passsed a few months back.

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