Main IndexAuto Repair Home Search Posts SEARCH
POSTS 		Who's Online WHO'S
ONLINE 		Log in LOG
IN




Automotive Repair
Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:   
  Login
  Sign up here!



Latest Forum Post
with_replies.gif image   Lukewarm Heat............
New antifreeze reverse flush heater core...

with_replies.gif image   multiple warning lights
2013 GMC Terrain 130,000 miles 4 cylinde...

with_replies.gif image   2014 Nissan Sentra Shaking
Car recently started shaking when accele...

no_replies.gif image   Buy Flualprazolam Powder Online Whatsapp: +1(424) 328-1086
N/A

hot_with_replies.gif image   1989 toyota pickup 3.0 crank no start
I have a 1989 toyota pickup 3.0 crank no...

with_replies.gif image   Strut spring orientation and strut mount tension nut
2017 Nissan rogue awd 2.5 L Put in Monro...

with_replies.gif image   Transmission stuck in part, I have tried everything
So I'm working on my elderly fathers 201...

with_replies.gif image   2017 dodge journey LED headlights on/off randomly
Year of vehicle 2017 Make of vehicle dod...

with_replies.gif image   Kia Soul starter replacement issues!
Okay so my car is a 2010 Kia soul 2.0 en...

hot_with_replies.gif image   Please Help - Knock sound & engine fail
Hi all, Hoping to get some insight and ...




AC blows hot air

Search for (search options)
 



wal1809
User

Nov 11, 2020, 10:51 AM

Post #1 of 3 (2127 views)
AC blows hot air Sign In
Year of vehicle 2000
Make of vehicle Ford
Model of vehicle Excursion
Engine size 7.3 liter diesel
Mileage 201,000

Gauges hooked up on at the ports and off at the gauge manifold, 75 degrees outside, low side gauge 75 lbs, high side 60ish lbs.

Compressor clutch engages for 3 seconds and then disengages. It engages and disengages like that continuously.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 11, 2020, 12:28 PM

Post #2 of 3 (2121 views)
Re: AC blows hot air Sign In
There is probably a problem with your gauges being a little inaccurate because it's impossible for the high side to be lower than the low side.

The fast cycling could indicate 2 things, either low on refrigerant or a blockage in the system so don't just go adding more refrigerant because if it's a blockage, that could be disasterous.

Before ever attempting to diagnose an AC system, the first step should ALWAYS be a complete evacuate and recharge of the system with the exact WEIGHED amount of specified charge. None of your pressure readings mean anything at all until you know you have the exact amount of charge in the system. Incorrect amount of refrigerant skews the pressure readings.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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.



Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 11, 2020, 12:35 PM

Post #3 of 3 (2115 views)
Re: AC blows hot air Sign In
High side can't be that as HT said.
OP, what's the temp of where this is when off for hours like overnight? That totally matters despite the 75F the ground is cool to cold, not frozen where I am was mid 80s yesterday for example. Any of my own would do the cycle thing system is cold, sucking air off surface is colder air than the temp.
If so it's a lousy time of year to guess at like this. If you need it to work properly still and ongoing do as HT suggested near all would be low from a leak to find and fix the topping off days are over,


T






 
 
 






Search for (options) Privacy Sitemap