94 Explorer A/C Clutch not operating

Hi

I have noticed that my A?C clutch doesnt operate when required

I have put a meter across the plug and get no reading - I have check
the fuses

Is there a relay I should check or is this serious ??

Regards

Mike

The most common cause is a low refrigerant charge. I would recommend having
the system serviced by a shop with the correct equipment.


<Deanesfield> wrote in message
...
> Hi
>
> I have noticed that my A?C clutch doesnt operate when required
>
> I have put a meter across the plug and get no reading - I have check
> the fuses
>
> Is there a relay I should check or is this serious ??
>
> Regards
>
> Mike
>

Yup. Mine won't engage until the pressure is at least minimum of 35.

"Jim Warman" > wrote in message
news:LzChe.65803$tg1.2402@edtnps84...
| The most common cause is a low refrigerant charge. I would recommend
having
| the system serviced by a shop with the correct equipment.
|
|
| <Deanesfield> wrote in message
| ...
| > Hi
| >
| > I have noticed that my A?C clutch doesnt operate when required
| >
| > I have put a meter across the plug and get no reading - I have check
| > the fuses
| >
| > Is there a relay I should check or is this serious ??
| >
| > Regards
| >
| > Mike
| >
|
|

Mike,

Jim will probably hate me for suggesting this, but you can test his
hypothesis with my most favorite automotive tool - the paper clip. Pull the
electrical connector on top of the accummulator/dryer and briefly short the
two contacts in the socket (engine running, A/C on). If the clutch engages,
you have a low charge or a bad pressure switch (much less likely). By all
means, don't leave these contacts shorted for more than a few seconds.
And now that you have confirmed the low charge, take the vehicle to an
honest professional. Not much a shade tree mechanic can do without the
proper tools. Even if it's just a bad o-ring, you need a leak detector to
find it, then a good quality vacuum pump and a manifold with gauges to
properly evacuate and recharge the system.


"Jim Warman" > wrote in message
news:LzChe.65803$tg1.2402@edtnps84...
> The most common cause is a low refrigerant charge. I would recommend
having
> the system serviced by a shop with the correct equipment.
>

Thanks Guys

I will get this checked out in the week - I'm not sure I know where
the accumulator/dryer is, so I will get an expert to look at it.

Will the recharge involve a conversion to the new refrigarant??

Mike

On Sun, 15 May 2005 14:18:01 -0700, "Happy Traveler"
> wrote:

>Mike,
>
>Jim will probably hate me for suggesting this, but you can test his
>hypothesis with my most favorite automotive tool - the paper clip. Pull the
>electrical connector on top of the accummulator/dryer and briefly short the
>two contacts in the socket (engine running, A/C on). If the clutch engages,
>you have a low charge or a bad pressure switch (much less likely). By all
>means, don't leave these contacts shorted for more than a few seconds.
>And now that you have confirmed the low charge, take the vehicle to an
>honest professional. Not much a shade tree mechanic can do without the
>proper tools. Even if it's just a bad o-ring, you need a leak detector to
>find it, then a good quality vacuum pump and a manifold with gauges to
>properly evacuate and recharge the system.
>
>
>"Jim Warman" > wrote in message
>news:LzChe.65803$tg1.2402@edtnps84...
>> The most common cause is a low refrigerant charge. I would recommend
>having
>> the system serviced by a shop with the correct equipment.
>>
>

In article >, Deanesfield <> wrote:
>Thanks Guys
>
>I will get this checked out in the week - I'm not sure I know where
>the accumulator/dryer is, so I will get an expert to look at it.
>
>Will the recharge involve a conversion to the new refrigarant??

My '94 had R134a, so I doubt it unless they changed midway thru the model
year.


--
Mike Iglesias Email:
University of California, Irvine phone: 949-824-6926
Network & Academic Computing Services FAX: 949-824-2069

The dryer is that tank looking thingy back by the firewall on the
passenger side.....and is also where you would add freon, just in case you
decide to try that for yourself. Just make sure to get a kit wit a gauge so
you can see where you are as far as pressure.


<Deanesfield> wrote in message
...
| Thanks Guys
|
| I will get this checked out in the week - I'm not sure I know where
| the accumulator/dryer is, so I will get an expert to look at it.
|
| Will the recharge involve a conversion to the new refrigarant??
|
| Mike
|
| On Sun, 15 May 2005 14:18:01 -0700, "Happy Traveler"
| > wrote:
|
| >Mike,
| >
| >Jim will probably hate me for suggesting this, but you can test his
| >hypothesis with my most favorite automotive tool - the paper clip. Pull
the
| >electrical connector on top of the accummulator/dryer and briefly short
the
| >two contacts in the socket (engine running, A/C on). If the clutch
engages,
| >you have a low charge or a bad pressure switch (much less likely). By all
| >means, don't leave these contacts shorted for more than a few seconds.
| >And now that you have confirmed the low charge, take the vehicle to an
| >honest professional. Not much a shade tree mechanic can do without the
| >proper tools. Even if it's just a bad o-ring, you need a leak detector to
| >find it, then a good quality vacuum pump and a manifold with gauges to
| >properly evacuate and recharge the system.
| >
| >
| >"Jim Warman" > wrote in message
| >news:LzChe.65803$tg1.2402@edtnps84...
| >> The most common cause is a low refrigerant charge. I would recommend
| >having
| >> the system serviced by a shop with the correct equipment.
| >>
| >
|

Thanks Guys

Got a specialist to check it out and recharge - just in time for our
30degC Spring weather. Cost $155cad

Michael


On Tue, 17 May 2005 09:40:30 -0500, "John Riggs"
> wrote:

> The dryer is that tank looking thingy back by the firewall on the
>passenger side.....and is also where you would add freon, just in case you
>decide to try that for yourself. Just make sure to get a kit wit a gauge so
>you can see where you are as far as pressure.
>
>
><Deanesfield> wrote in message
.. .
>| Thanks Guys
>|
>| I will get this checked out in the week - I'm not sure I know where
>| the accumulator/dryer is, so I will get an expert to look at it.
>|
>| Will the recharge involve a conversion to the new refrigarant??
>|
>| Mike
>|
>| On Sun, 15 May 2005 14:18:01 -0700, "Happy Traveler"
>| > wrote:
>|
>| >Mike,
>| >
>| >Jim will probably hate me for suggesting this, but you can test his
>| >hypothesis with my most favorite automotive tool - the paper clip. Pull
>the
>| >electrical connector on top of the accummulator/dryer and briefly short
>the
>| >two contacts in the socket (engine running, A/C on). If the clutch
>engages,
>| >you have a low charge or a bad pressure switch (much less likely). By all
>| >means, don't leave these contacts shorted for more than a few seconds.
>| >And now that you have confirmed the low charge, take the vehicle to an
>| >honest professional. Not much a shade tree mechanic can do without the
>| >proper tools. Even if it's just a bad o-ring, you need a leak detector to
>| >find it, then a good quality vacuum pump and a manifold with gauges to
>| >properly evacuate and recharge the system.
>| >
>| >
>| >"Jim Warman" > wrote in message
>| >news:LzChe.65803$tg1.2402@edtnps84...
>| >> The most common cause is a low refrigerant charge. I would recommend
>| >having
>| >> the system serviced by a shop with the correct equipment.
>| >>
>| >
>|
>