Question about 2000 Volvo S40

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Our Volvo s40 2000, the car keeps over heating, and we changed the termo valve and it still doing the same problem, what could be the cause of this ?

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Faulty water pump or radiator needs a flush.

Posted on Oct 14, 2010

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Code 0172 pop up on 1998 Volvo s70 and the maf code didn't or the o2 code didn't what could it be?


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    I have 2001 volvo s60 heat blows cold air


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    Mar 07, 2015 | Volvo Cars & Trucks

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    Over heating the electric fan is not coming on . removed thermostst but still heats up. Does the fan got a fuse or control manual. Was running well in a traffic ram i noticed the temp climbing the hazard...


    There is a termo switch witch turns on and off the fans, it could be faulty. First check the fuse, than directly connect fan to the battery, if fans start to spin, check the fuse and if the fuse is ok than it's probably termo switch or maybe it's damaged wire in between fuse box and the fan....

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    i have heard somewhere that this is caused by a faulty vacuum check valve which is black and white plastic and is located near centre above the rear of the engine up against the firewall. vacuum drops when you accelerate so there is not enough vacuum to keep various vacuum operated heating/cooling system valves in their selected position . the check valve keeps sufficient vacuum in a reservoir tank when vacuum at the engine manifold drops.

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    99 ford taraus, changed termo, changed heater actuater, flush, new coolant added, checked all fuses , intake and outtake hose hot still no heat


    I believe your vacuum hose bundle to the mix valve is miss-aligned or off.Check that out before you drop more bucks into the repair.It is under the dash by the big box on the passenger side

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    replace the pvc valve and have the egr valve replace.make sure the vacuum hoses connect to egr valve and pvc replace.change air filter.all those things will cause high emission if not working properly.cause you to fail smog test.

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    Change sprks plugs on volvo S60 2.4 t ......


    Did you set the plug gap correctly?Improperly gapped plugs will cause the spark to be to cold or to hot and can cause misfire of the fuel wich would explain the vibration,this could also be caused by the wrong heat range on the plug.Check what spark plugs Volvo reccomends and the gap.

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    VOLVO S40 SE 2001RPM HIGH


    YOU MAY HAVE A IDLE SPEED CONTROL VALVE PROBLEM, CLEAN IT FIRST, THEN DISCONNECT THE BATTERY, FOLLOW THE PROCEDURE I HAVE ATTACHED.

    Here is the most common cause of this stall and idle speed issues, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

    Nov 07, 2008 | 2000 Volvo S40

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