Question about 2001 Audi TT

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Overheating, low fuel efficiency, fuel smell in cabin

No coolant leak, changed radiator, head gasket, spark plugs, coolant, thermostat valve, thermostat switch, timing belt, timing bearing, ac fan belt. started after timing belt, timing bearing, ac fan belt changed & tappet setting done

Posted by abhi73 on

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  • abhi73 Jul 08, 2009

    Dear jamesm_406,

    The fuel lines & vaccum lines had been checked. Found no problem in it. Even canister was checked and no problem. Fuel cap was also replaced. The service center person just plugged in the clutch wire rubber seal into the car body saying this brings the smell inside the cabin.

    What to be checked in the water pump? How to check the water pump? We have taken out the hose connecting the head & the coolant was coming with pressure. Is that the way to check the Water pump?

    I have checked the fan in both the ways, when in idle and when its working on the AC. As in idle, the car when becomes hot, the fan starts & on AC as soon as the AC is on the fan starts.

    Thanks you responded. I am grateful to you.

    Best Regards

  • abhi73 Jul 08, 2009

    Also throttle body cleaning, injector cleaning done.

  • Anonymous May 11, 2010

    ok. My next move would be checking the water pump. Does the fan kick in at all? There has to be a leak for there to be a smell of fuel in the cabin, check all fuel lines and fuel injectors for split lines.

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Brian Saner

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If your over heating take thermostat OUT first before u buy anything else. I bought 3 thermostats at parts store all bad. i think the design is very restrictive especially if you put crack sealer in rad. like bars leak

Posted on Jun 09, 2012

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Sounds like coolant ports in the engine block is gunked up. Did you maybe notice the coolant ports when you changed the head gaskets? And, or, change the radiator cap,if you haven't already done so, I've seen them heat up over that too.

Posted on Jul 07, 2009

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