Question about 1999 Dodge Grand Caravan

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Ac low pressure switch location 1999 grand caravan

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6ya6ya
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Posted on Jan 02, 2017

djchillsnyc
  • 151 Answers

SOURCE: locate a fan relay switch

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check your blower motor resistor also, like in this pic
the fan relay is loacated driver side under the dash fuse box









Posted on Dec 16, 2008

  • 1 Answer

SOURCE: oil pressure light at low RPM

Before you have major repair done on your car because of the "oil pressure light", review the list and see if any of these might be the source.  Some of the things on this list are things you can do yourself, some only done by a mechanic (inexpensively), and others require the aid of a mechanic.
1.  Check to see if you have a leak.  Low oil levels can make the oil sensor light come one.  Check your oil level following the manufacturers recommended procedure or use the information listed here http://autorepair.about.com/od/regularmaintenance/a/checkoil.htm.  If you do not have a low oil level, but still suspect a leak, place a drip pan under the oil plug overnight.  If you have a leak, you'll see signs of it there.  Then take the vehicle to a trustworthy mechanic and let them trace the leak.  It is possible for your engine to only leak when it is hot, so make sure you get the engine nice and warm before you put the car away for the evening and place the drip pan under your vehicle.  Other signs of an oil leak are listed below as well as an "oily" exhaust that leaves it mark on your bumper or "blue smoke" as you drive/idle.
2.  Check the coolant levels. If the coolant is low, the oil will heat up faster and cause a viscosity breakdown.  When the oil viscosity is low (= thin oil), the oil sensor light can come on.  If the coolant is low, add more.  Keep in mind that an engine running hot will heat the engine oil to the point that it thins out and burns off in the cylinders.  If the coolant level is fine, have the coolant (water) pump checked.  If the coolant is not circulating well through the engine, you'll probably have coolant boiling over, too.
3.  If you can afford to do it, change your oil to a higher or lower viscosity.  Refer to your maintenance manual and your trusted mechanic. I say this because, if your oil is thinning out too much because the viscosity is too low, your "check oil" light will come on.  If your engine oil is too thick, you engine will need added internal pressure to get it to circulate.  At lower RPM (just like thin oil), your engine oil light will come one.
4.  Have the oil pressure checked by other than an electronic means.  Your trusted mechanic can place an oil gage between your oil filter and the rest of the engine or on the oil fill cap of the engine.  If you are having an oil pressure problem that is seal-related, that should narrow it down.  If you can't afford to do that, when you get your next oil change, replace: the oil fill cap, PCV valve, and air filter.  All these contribute to the measurement of engine oil pressure by that picky little oil pressure sensor.
5.  Have the oil pressure sensor checked.  You may need some weird add-on to make it behave.  Do a search for the following part and read and you should have a better understanding: "part # 05017800AA a terminal/wire/vent to the oil pressure switch connector".  Never forget that sensor are usually engineered to report a problem well before a catastrophic failure can occur.
6.  If you're driving a high-milege car, make sure you are up to date on all of the engine-specific services.  For some vehicles, it is recommended that the head gaskets are replaced.  If you have internal engine leaks because of it, this will solve most of those issues.  Signs of this include: coolant visible in the crankshaft area (you can see this with the oil cap off), oil fouling your coolant (you can see this in the coolant reservoir), or smokey exhaust.  Expect your trusted mechanic to recommend that you change your spark plugs, timing belt, and cam shaft gasket at the same time.
7.  See if the oil pump needs to be replaced.  A faulty oil pump can contribute to low oil pressure as it fails (but hasn't failed, yet).  
8.  Do all of the above BEFORE you take to recommendation to have your engine replaced.
I have a 1998 Chrysler Cirrus (I know it's not a minivan, but hear me out).  I've been the single owner and have learned more about how engineering oversights or over-cautiousness can send you to the mechanic for just about everything.
Hope this helps!

Posted on Jan 20, 2009

VWdan
  • 114 Answers

SOURCE: Where is the AC Low pressure valve on a 1999 Pontiac Grand Prix?

sometimes its behind the alternator real close to the firewall. Find the bigger of the two hoses and pipes the low side is always bigger. Also the cap is blue and the fitting for the charging can will only fit on the right valve.

Posted on Apr 24, 2009

  • 6 Answers

SOURCE: where is the low pressure side port of the ac on a

it will be the cooler temperature line going into compressor. With blue cap on service valve usually.

Posted on Jun 27, 2009

  • 54 Answers

SOURCE: 2003 dodge grand caravan ac recharge

you should be adding the 134a to the system the low pressure switch is doing its job by not allowing the compressor to kick on, it wont kick on until there is enough 134a in the system to be above the preset pressure for the low pressure switch.

Posted on Jun 27, 2009

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2 Answers

Ac problem no voltage to ac clutch on dodge caravan 1999 3.3 eng


If you do not have enough refrigerant in the system. The low pressure switch will prevent the compressor from engaging to avoid damage.

Check your pressure.

I don't recommend this, but you may need to jump your low pressure switch to get the compressor going to add more refrigerant to the system. But if your low on charge, it may be "best to take it to a shop to have them fill the system".

Jun 09, 2011 | Dodge Caravan Cars & Trucks

1 Answer

I am trying to refill my cars air conditioning refrigerant,so i matrying to locate Caravan's low side pressure fitting, is there any pictures on the web to look it up?


Hi, the low side port is located on suction side near compressor , it can be identified as the larger of the two lines from compressor. Using eye protection and gloves hook can to hose, hook hose up to port , open valves, crank engine , turn on AC.

May 30, 2011 | 2003 Dodge Grand Caravan AWD

1 Answer

Im trying to recharge my ac in a 2007 grand caravan. i cannot seem to find the correct fitting to hook up to.


The low pressure line and fitting is located between the the a/c compressor and the radiator, left side near the bottom front of the motor.

Mar 30, 2011 | 2007 Dodge Grand Caravan SXT Minivan

1 Answer

How do I stop and/or turn off the low oil pressure alarm


You need to verify that the oil pressure is within spec first. If it is then the sending unit is probably oil soaked and faulty. Unplug the sending unit and jumper the terminals together. The bell should go out.
Replace the sending unit.

Apr 08, 2010 | 1999 Dodge Grand Caravan

1 Answer

Where is the ac low pressure cut out switch located


Most of them are in the expansion block or right there at it,on the firewall.

Apr 08, 2010 | 2005 Dodge Grand Caravan

1 Answer

Recharge ac 1999 caravan how to


you have a sticker under hood tells you how much your system holds, you should go get the amount in cans and you get a low side connection hose with charge can. you follow instruction on can and do not charge with out engine on and ac switch to on.

Jul 30, 2009 | 2000 Dodge Grand Caravan

2 Answers

2003 dodge grand caravan ac recharge


you should be adding the 134a to the system the low pressure switch is doing its job by not allowing the compressor to kick on, it wont kick on until there is enough 134a in the system to be above the preset pressure for the low pressure switch.

Jun 27, 2009 | 2003 Dodge Grand Caravan AWD

2 Answers

AC Compressor is not coming on in our 2006 grand caravan could it be a fuse and if so which one


I'd bet money it's your Rear Evaporator, located behind the back right tire. Mine just went out, which cost $200 to discover, followed by $811 to replace. My co-worker has the same vehicle, and had the same exact problem six months prior. If you google search for "06 grand caravan evaporator" you'll find similar posts. And it's not a recalled item, as of this writing.

Jun 09, 2009 | 2006 Dodge Grand Caravan

1 Answer

Ac blowing ht air, compressor not coming on


Check the fuses/relay for the compressor. If good, bypass the pressure switch. If the compressor comes on, there is too little internal pressure. Have the system evacuated and recharged. If the compressor does not come on, it could be bad.

May 12, 2009 | 1999 Dodge Grand Caravan

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