Question about 2001 Suzuki Xl 7

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Expansion valve where is it on xl7

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If you have an XL-7 with a rear A/C outlet, there are two expansion valves. The dealer will more than happy to point them out. They are both just small aluminum blocks about the size of a pack of cigarettes. There will be two large tubes attached (cooling fluid going in and out) plus a small tube attached (to control the valve). I would think the front one is somewhere near the condensor (the radiator in front of the engine radiator). The rear one will be underneath the plastic interior hiding the rear A/C condensor. Sorry that isn't much of an answer. I bought a factory service manual set (5 volumes) but they're at the other house right now. Best $100 I've spent on this car yet. You should see the mechanics face when he realizes I've got a copy of the service page in question in hand and his bulls*** won't fly.

Posted on Jan 19, 2009

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The flow control can be either an orifice tube or a metering device called an expansion valve. A thermostatic expansion valve controls the amount of refrigerant that is allowed to flow to the evaporator. A temperature sensing bulb on the evaporator inlet controls the expansion valve.
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  • Failure of the sensing bulb is the most common problem.
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  • If the sensing capillary tube is warm, there is high pressure that pushes on the diaphragm.
  • The sensing bulb checks the temperature of the outlet line of the evaporator.
  • If it is warm, it opens the valve.
  • Pressure on top of the diaphragm tries to push the valve open.
  • The operation of the expansion valve can be checked.
  • Some expansion valves can be cleaned, repaired or adjusted.
f73-15a.gif This system uses an expansion valve as it's flow control device. Some expansion valves are wrapped with insulation. When the sensing bulb is in the evaporator case, it does not need to be wrapped because it stays cold. When an expansion valve is packed in that type of system, it is only to silence the noise that the evaporator makes.

CAUTION
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