A/C CLUTCH SOLENOID
#31
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
I'm only guessing here, but maybe try pulling the wires off of your ac-
heater controls to check if maybe your switch might be the problem? You
really need a meter to check properly as to what is happening. Even a
cheapo 12V will work fine. The fact that when you pull the relay wires and
the solenoid goes off tells me the problem is farther up the line. Your
low pressure switch will always be closed, unless you have a leak and have
lost refrigerant.
--
Message posted via http://www.carkb.com
heater controls to check if maybe your switch might be the problem? You
really need a meter to check properly as to what is happening. Even a
cheapo 12V will work fine. The fact that when you pull the relay wires and
the solenoid goes off tells me the problem is farther up the line. Your
low pressure switch will always be closed, unless you have a leak and have
lost refrigerant.
--
Message posted via http://www.carkb.com
#32
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
I'm only guessing here, but maybe try pulling the wires off of your ac-
heater controls to check if maybe your switch might be the problem? You
really need a meter to check properly as to what is happening. Even a
cheapo 12V will work fine. The fact that when you pull the relay wires and
the solenoid goes off tells me the problem is farther up the line. Your
low pressure switch will always be closed, unless you have a leak and have
lost refrigerant.
--
Message posted via http://www.carkb.com
heater controls to check if maybe your switch might be the problem? You
really need a meter to check properly as to what is happening. Even a
cheapo 12V will work fine. The fact that when you pull the relay wires and
the solenoid goes off tells me the problem is farther up the line. Your
low pressure switch will always be closed, unless you have a leak and have
lost refrigerant.
--
Message posted via http://www.carkb.com
#33
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
I'm only guessing here, but maybe try pulling the wires off of your ac-
heater controls to check if maybe your switch might be the problem? You
really need a meter to check properly as to what is happening. Even a
cheapo 12V will work fine. The fact that when you pull the relay wires and
the solenoid goes off tells me the problem is farther up the line. Your
low pressure switch will always be closed, unless you have a leak and have
lost refrigerant.
--
Message posted via http://www.carkb.com
heater controls to check if maybe your switch might be the problem? You
really need a meter to check properly as to what is happening. Even a
cheapo 12V will work fine. The fact that when you pull the relay wires and
the solenoid goes off tells me the problem is farther up the line. Your
low pressure switch will always be closed, unless you have a leak and have
lost refrigerant.
--
Message posted via http://www.carkb.com
#34
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
JEEPR did pass the time by typing:
> When I pull the relay the solenoid de-energizes.
> I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
> ground for the solenoid to energize.
That is the only thing it could be apart from the AC being on or the
setting being defrost.
The ECU provides a ground (transistor switched) to the relay. A short
anywhere along that wire will energize the relay.
Next step would be to disconnect the battery, and disconnect the harness
from the ecu then ohm out the line. Watch that center bolt for the ecu
plug, it's only there to hold the plug in, not to suck it in. Don't try
to make the plug go in by cranking on the bolt, you will crack the ECU.
That and it only goes hand tight, like a screw into plastic.
In the meanwhile if you don't want it running you can simply yank the
relay. Pulling the high/low pressure switches (either one) will set a
fault code but will also shut off the relay by removing the power feed.
A short in the ECU output to that AC relay won't hurt the ECU.
--
DougW
> When I pull the relay the solenoid de-energizes.
> I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
> ground for the solenoid to energize.
That is the only thing it could be apart from the AC being on or the
setting being defrost.
The ECU provides a ground (transistor switched) to the relay. A short
anywhere along that wire will energize the relay.
Next step would be to disconnect the battery, and disconnect the harness
from the ecu then ohm out the line. Watch that center bolt for the ecu
plug, it's only there to hold the plug in, not to suck it in. Don't try
to make the plug go in by cranking on the bolt, you will crack the ECU.
That and it only goes hand tight, like a screw into plastic.
In the meanwhile if you don't want it running you can simply yank the
relay. Pulling the high/low pressure switches (either one) will set a
fault code but will also shut off the relay by removing the power feed.
A short in the ECU output to that AC relay won't hurt the ECU.
--
DougW
#35
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
JEEPR did pass the time by typing:
> When I pull the relay the solenoid de-energizes.
> I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
> ground for the solenoid to energize.
That is the only thing it could be apart from the AC being on or the
setting being defrost.
The ECU provides a ground (transistor switched) to the relay. A short
anywhere along that wire will energize the relay.
Next step would be to disconnect the battery, and disconnect the harness
from the ecu then ohm out the line. Watch that center bolt for the ecu
plug, it's only there to hold the plug in, not to suck it in. Don't try
to make the plug go in by cranking on the bolt, you will crack the ECU.
That and it only goes hand tight, like a screw into plastic.
In the meanwhile if you don't want it running you can simply yank the
relay. Pulling the high/low pressure switches (either one) will set a
fault code but will also shut off the relay by removing the power feed.
A short in the ECU output to that AC relay won't hurt the ECU.
--
DougW
> When I pull the relay the solenoid de-energizes.
> I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
> ground for the solenoid to energize.
That is the only thing it could be apart from the AC being on or the
setting being defrost.
The ECU provides a ground (transistor switched) to the relay. A short
anywhere along that wire will energize the relay.
Next step would be to disconnect the battery, and disconnect the harness
from the ecu then ohm out the line. Watch that center bolt for the ecu
plug, it's only there to hold the plug in, not to suck it in. Don't try
to make the plug go in by cranking on the bolt, you will crack the ECU.
That and it only goes hand tight, like a screw into plastic.
In the meanwhile if you don't want it running you can simply yank the
relay. Pulling the high/low pressure switches (either one) will set a
fault code but will also shut off the relay by removing the power feed.
A short in the ECU output to that AC relay won't hurt the ECU.
--
DougW
#36
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
JEEPR did pass the time by typing:
> When I pull the relay the solenoid de-energizes.
> I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
> ground for the solenoid to energize.
That is the only thing it could be apart from the AC being on or the
setting being defrost.
The ECU provides a ground (transistor switched) to the relay. A short
anywhere along that wire will energize the relay.
Next step would be to disconnect the battery, and disconnect the harness
from the ecu then ohm out the line. Watch that center bolt for the ecu
plug, it's only there to hold the plug in, not to suck it in. Don't try
to make the plug go in by cranking on the bolt, you will crack the ECU.
That and it only goes hand tight, like a screw into plastic.
In the meanwhile if you don't want it running you can simply yank the
relay. Pulling the high/low pressure switches (either one) will set a
fault code but will also shut off the relay by removing the power feed.
A short in the ECU output to that AC relay won't hurt the ECU.
--
DougW
> When I pull the relay the solenoid de-energizes.
> I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
> ground for the solenoid to energize.
That is the only thing it could be apart from the AC being on or the
setting being defrost.
The ECU provides a ground (transistor switched) to the relay. A short
anywhere along that wire will energize the relay.
Next step would be to disconnect the battery, and disconnect the harness
from the ecu then ohm out the line. Watch that center bolt for the ecu
plug, it's only there to hold the plug in, not to suck it in. Don't try
to make the plug go in by cranking on the bolt, you will crack the ECU.
That and it only goes hand tight, like a screw into plastic.
In the meanwhile if you don't want it running you can simply yank the
relay. Pulling the high/low pressure switches (either one) will set a
fault code but will also shut off the relay by removing the power feed.
A short in the ECU output to that AC relay won't hurt the ECU.
--
DougW
#37
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
JEEPR did pass the time by typing:
> When I pull the relay the solenoid de-energizes.
> I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
> ground for the solenoid to energize.
That is the only thing it could be apart from the AC being on or the
setting being defrost.
The ECU provides a ground (transistor switched) to the relay. A short
anywhere along that wire will energize the relay.
Next step would be to disconnect the battery, and disconnect the harness
from the ecu then ohm out the line. Watch that center bolt for the ecu
plug, it's only there to hold the plug in, not to suck it in. Don't try
to make the plug go in by cranking on the bolt, you will crack the ECU.
That and it only goes hand tight, like a screw into plastic.
In the meanwhile if you don't want it running you can simply yank the
relay. Pulling the high/low pressure switches (either one) will set a
fault code but will also shut off the relay by removing the power feed.
A short in the ECU output to that AC relay won't hurt the ECU.
--
DougW
> When I pull the relay the solenoid de-energizes.
> I'm thinking there is a short somewhere or chaffed wire, supplying maybe a
> ground for the solenoid to energize.
That is the only thing it could be apart from the AC being on or the
setting being defrost.
The ECU provides a ground (transistor switched) to the relay. A short
anywhere along that wire will energize the relay.
Next step would be to disconnect the battery, and disconnect the harness
from the ecu then ohm out the line. Watch that center bolt for the ecu
plug, it's only there to hold the plug in, not to suck it in. Don't try
to make the plug go in by cranking on the bolt, you will crack the ECU.
That and it only goes hand tight, like a screw into plastic.
In the meanwhile if you don't want it running you can simply yank the
relay. Pulling the high/low pressure switches (either one) will set a
fault code but will also shut off the relay by removing the power feed.
A short in the ECU output to that AC relay won't hurt the ECU.
--
DougW
#38
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
JEEPR did pass the time by typing:
> Initially it was but it is also doing it in the off selection, why?
Let's back up one step.. do you have automatic climate control?
If so then there are some other tests you can run to figure out
what's going on.
--
DougW
> Initially it was but it is also doing it in the off selection, why?
Let's back up one step.. do you have automatic climate control?
If so then there are some other tests you can run to figure out
what's going on.
--
DougW
#39
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
JEEPR did pass the time by typing:
> Initially it was but it is also doing it in the off selection, why?
Let's back up one step.. do you have automatic climate control?
If so then there are some other tests you can run to figure out
what's going on.
--
DougW
> Initially it was but it is also doing it in the off selection, why?
Let's back up one step.. do you have automatic climate control?
If so then there are some other tests you can run to figure out
what's going on.
--
DougW
#40
Guest
Posts: n/a
Re: A/C CLUTCH SOLENOID
JEEPR did pass the time by typing:
> Initially it was but it is also doing it in the off selection, why?
Let's back up one step.. do you have automatic climate control?
If so then there are some other tests you can run to figure out
what's going on.
--
DougW
> Initially it was but it is also doing it in the off selection, why?
Let's back up one step.. do you have automatic climate control?
If so then there are some other tests you can run to figure out
what's going on.
--
DougW