Question about 2006 Volvo S40 T5

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06 Volvo S40 T5 battery, alternator, ac

Replaced battery 2 months ago because electric system lights came on. Have driven very little since then but today same thing happened but could not start or steer or put into drive. Now they tell me it needs a new alternator. AC won't cool if outside temp is over 80. They are telling me this is all because of the batter not charging. Can that be so?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: number plate light in 2000 S40

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Posted on Jun 07, 2008

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SOURCE: 1999 Volvo S80 will not hold a charge

Tricky ... Was the alternator replaced with a 2nd hand one or a new one?

A defective alternator can allow the battery to discharge within a few minutes (the diodes in the rear of the alternator can burn out and cause the problem. The diode pack can be replaced). When this happens recharging the battery only replaces the power in the battery - which drains straight back to earth via the alternator, flattening the battery again - often within a couple of minutes or less.

Does the battery lose its charge when the car is standing or just when the engine is fired up?
If the battery loses its charge overnight, try disconnecting the wiring from the rear of the alternator (also look at the electrical connector that fits into the back of the alternator - look for melting/burning marks which suggest something may be amiss inside the alternator).

Let the car stand overnight with the alternator wires disconnected. Will it start up ok and drive (with the alternator wires still disconnected) the next morning?

You could also try just disconnecting the alternator wires, firing up the car and then driving it -
If the car drives ok without dying out and gets further down the street than it usually does, then it probably is the alternator at fault. The car should drive until the battery drains and has insufficient power to trigger the ignition. You certainly would get further down the street with a charged battery and disconnected alternator than you currently do.

It does sound as though you've had an alternator fault to begin with. If it has been replaced with a 2nd hand unit that unit may also be faulty. Rather than replace parts in desperation, visit an auto electrician's - within a few minutes they will be able to test the battery/alternator output and also identify where the lost current is going. It will be cheaper in the long run to have an auto electrician look at the charging system. It only takes a few minutes.

Posted on Sep 17, 2008

  • 255 Answers

SOURCE: 04 volvo s40 t5 won't start

have battery charged fully. start car test the output voltage of your alternator. do this by probing the batt pot terminal on backside of your alt. if it is good it must be above 12.35v if not replace

hope2help shack

Posted on Apr 17, 2009

  • 1 Answer

SOURCE: 2005 volvo s40 t5 how to reset oil light

turn the key on to position 1 preset miliage trip button anh hold for 2 second release and turn key to position 2 hold within 4 secods and hold til manitance info clears.

Posted on Apr 19, 2009

  • 20 Answers

SOURCE: I have a 1995 Volvo 850 GLT with about 200k miles

Power steering, and lamps in the instrument:

Your problem is mainly at the accessory belt, the one on the far right of the engine.
It might also be the guide roller placed behind the alternator that has "locked" its bearing.
Both are quite easy to change, even if the fitting of the guide-roller might be some tricky.

replace both belt and roller.

Note: the guide roller I talk about is NOT the one wich holds the tension to the accessories belt, but one that is mounted directly to the engine block.

Front seat heaters:

Under the seat is the themoswitch for the seat heaters. These are kept in place by a spring.
However, the connections to the thermoswitches is possible loose. I always replace the connectors, use a high-flexible cable (RK2,5mm) and then reconnects them to the cablegland under the seat.

The rest of the problems is often due to poor earthing. There is several connections made to the chassis of the car, and you should check those near te apparatus you are experiencing problems with. For the turnsignal, check the tail-lamp on the side you are having problem. Just take it out of the car, and clean it thouroghly with WD-40 or similar. Each bulb and socket.
(It is a good idea to replace all bulbs, even if they are in working condition at the same, cause they will fail soon).

Could be one or more earthing connections.

Posted on Jul 20, 2009

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have battery charged fully. start car test the output voltage of your alternator. do this by probing the batt pot terminal on backside of your alt. if it is good it must be above 12.35v if not replace

hope2help shack

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2005 volvo s40 t5 how to reset oil light


turn the key on to position 1 preset miliage trip button anh hold for 2 second release and turn key to position 2 hold within 4 secods and hold til manitance info clears.

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Volvo S40 T5 2006 power streering problem and something else S40 T5 2006, In the morning, specialy when it´s cold, and only when I accelerate more than 30 mph, I feel a little "hard to move" the power steering when i turn to the left only, just like 10° and after that the power steering finish the turn working well...It happens for about 10 or 15 minutes every time does the same when I turn from the center until 10° to the left..until the car have been warm. When the car is not moving, or moving slow or turning to the right at any speed, the power sterring feels just great. I just made a dialisis of the pwer steering sistem and put just volvo fluid and it didnt help. I dont know if there is a sensor for power steering stability at high speed or something like that, or maybe a CEM failure...and I blame the CEM because I have other issues like the transmission, sometimes kicks from 2nd to 3rd...specially when I have to stop on a light...like if it was in neutral...and then when I accelerate, the RPM goes up and there it comes the kick. And when I use the manual it just work perfect. Other iusses are the window and the lock on the right back door sometimes doesn´t work and sometime for a long period works well. Once I stop using the car for a week, and when I try to open it, the door of the left (front and back) were stock, not even from the inside could open them, neither the windows or the mirrow on the left side...I have to use the Valet key to open the doors and the windows and the mirrow start to work. Thanx for your help.

Mar 13, 2012 | 2006 Volvo S40 T5

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