|
|
A/C Stopped Working When I floored it
|
|
|
| |
|
|
Hurtswhenipee
New User
Sep 19, 2010, 7:02 AM
Post #1 of 6
(4522 views)
|
|
A/C Stopped Working When I floored it
|
Sign In
|
|
2004 Kia Sorento A/C quit working while driving car and I floored it and the A/C cut out it will not come back on. The belt is on but the clutch is not engaging I would guess there are two switches in line the low pressure switch and the going up a hill switch and flooring it switch. Anyone know how to help.
I found the problem and repaired it thanks to everyone who replied.
It was the magnetic coil had burned up. I used a multi meter with a pin point probe to see that I had DC voltage to ground from the wire. then I removed the radiator using yellow wire nuts to stop the trans fluid from leaking. There is a snap ring holding on the pully assy and the coil is just pressd on the front of the compressor the new one just can be tapped on lightly with a (single jack) hammer held sidways accross the coil. Note! single jack is a term for a one handed sledge hammer.
(This post was edited by Hurtswhenipee on Oct 13, 2010, 7:16 AM)
|
|
| |
|
|
Sidom
Veteran
/ Moderator
Sep 19, 2010, 2:17 PM
Post #2 of 6
(4511 views)
|
|
Re: A/C Stopped Working When I floored it
|
Sign In
|
|
Well it sounds like you are going to have an electrical problem but with any a/c problem before you start tracing anything down you always want to make sure there is enough refridgerant in the system to turn it on.
So on this, to start you are going to want to hook up a gauge set and see what your static pressure is....... Post the what your readings are and we'll go from there.....
Our main A/C guy is out for a few days on a bender but there a still a bunch of good techs around to help you get your problem solved...
|
|
| |
|
|
Hurtswhenipee
New User
Sep 19, 2010, 5:26 PM
Post #3 of 6
(4502 views)
|
|
Re: A/C Stopped Working When I floored it
|
Sign In
|
|
The static pressure is around 150 psig. Also there is a relay in the enging compartment that I can feel pulling in when my wife turns the ac on and off and on the off chance that it had a bad contact I switched it with another one that was the same. Still no clutch. I can reach in and the clutch does turn freely with normal feeling compressor.
(This post was edited by Hurtswhenipee on Sep 19, 2010, 5:31 PM)
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Sep 19, 2010, 5:30 PM
Post #4 of 6
(4498 views)
|
|
Re: A/C Stopped Working When I floored it
|
Sign In
|
|
Was it parked in the hot sun when you took that reading?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
|
Sidom
Veteran
/ Moderator
Sep 19, 2010, 7:28 PM
Post #5 of 6
(4494 views)
|
|
Re: A/C Stopped Working When I floored it
|
Sign In
|
|
Considering the city he lives in & the time of day, this pressure sounds close to normal. I routinely see this pressure in my neck of the woods & doesn't get quite so warm here....
With the pressure you have the system should come on. The easiest place to start would be the a/c clutch relay. You've already swapped it so at this point we'll rule out a bad relay. The a/c relay should have power on 2 terminals and grounds (at some point) on 2 terminals. Most relays will have a numbered diagram on them.
#30 is power for the load. #87 feeds the load. #85 is power for the control side. #86 is the control side ground. 30 & 87 are always the same. Some manufacturers will flip 85 & 86 around, no big deal. if 86 has power then 85 is the ground...
With KOEO (key on) there should be power on terms #30 & #85. If there is check for ground on #86 and then with the engine running, turn on the a/c and that terminal should have a ground. If you have a fused jumper, you can run power to term #87 and the clutch should come on. If you have all of this, the relay is bad.
Something here is missing. The 2 powers are easy. If the clutch doesn't come on when jumping #87 then you have a bad clutch, broken wire, bad ground, something with that leg.....If #86 isn't grounding when you turn on the a/c, then this get a bit more complicated. It would mean for some reason (and there is a boatload) the PCM won't turn on the a/c when it's requested....
If you decide to jump the clutch with 12v, be double, triple sure what term you are jumping...... You don't want to jump the terminal for the PCM ground with 12v........This would not be good....
|
|
| |
|
|
Tom Greenleaf
Ultimate Carjunky
/ Moderator
Sep 20, 2010, 6:12 AM
Post #6 of 6
(4482 views)
|
|
Re: A/C Stopped Working When I floored it
|
Sign In
|
|
Just some basics here: Test for power to the clutch with an LED test light. Should work KOEO but may need engine running. If it has power tap on the outer plate - USE ALL CARE AS IT MAY JUST KICK ON AND SPIN so use rubber or wood and tap noting direction of rotation of the pulley as you want to tap the AWAY side or device to tap can become a projectile.
If that kicks it in then do a low tech check or the air gap between the outer plate where it would normally snap to engage with a standard paper biz car. Should go in and fall out. Then fold it and it should be tough to get into the air gap. Spec for most is about .020 to .025. If too large an air gap it will quit engaging..
Theory is: It's an electromagnet and the hotter the metal the less magnetic force is and will usually be intermittent at first then quit till air gap is adjusted IF THAT'S the issue.
Static noted suggests temps underhood were 112F or so. Account for engine heat and other factors even if the air temp outside engine compartment was much lower. At any rate that's plenty of plain static pressure to allow it to try.
Otherwise it's electrical. I don't know KIAs well at all but several cars have a WOT system. WOT = wide open throttle and load which will momentarily shut down compressor to remove that load and give you more power. That could have failed. All I know of are measuring intake manifold actual vacuum and newer stuff could include throttle position too and computer would/could stop sending power to clutch.
This all depends on if power is noted or not then go from there. There are failsafes to shut system down on purpose in about any system,
T
|
|
| |
|
| | |
|
Auto Repair Home
SEARCH
WHO'S 
LOG 
mdma pills for sale : WhatsApp +33758633852
Drive Shaft Repair
2006 Toyoto Camry XLE Driver Side Electric Window Trouble
Grounding Cable, 2017 Jeep Renegade Trailhawk
equipment
