Car

Ask a mechanic online and get answers to your car questions

Ask an Expert,
Get an Answer ASAP!

2000 Pontiac: AC..GTP..the presure on the low side is to high..clogged…

Customer Question
My AC on My 2000...
My AC on My 2000 Pontiac GTP does not work right. The value on the high presure side is OK but the presure on the low side is to high. could it be the expansion orifice tube that is clogged?
Submitted: 8 years ago.Category: Car
Show More
Show Less
Ask Your Own Car Question
Answered in 1 minute by:
6/25/2010
Auto Mechanic: Ron, ASE Certified Technician replied 8 years ago
Ron
Ron, ASE Certified Technician
Category: Car
Satisfied Customers: 38,844
Experience: ASE Certified Tech
Verified
Chat Conversation Started
Ron :

Hello, what are the High and low side reading when the compressor is running?

Customer:

The machanic didn't tell me them

Ron :

If you can get me the reading, I can help you, If the orifice tube was restricted, the low side would go into a vacuum .

Customer:

No it wasn't that. He said it points to the compressor being bad. But sometimes the thing seem to work.

Ron :

I would agree if the low side is high and the system isnt overcharged, it is most likely the compressor. If that is the case, the orifice and the accumulator should be replaced as well as a systems flush.

Ask Your Own Car Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with an auto mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Ron Your Own Question
Ron
Ron
Ron, ASE Certified Technician
Category: Car
Satisfied Customers: 38,844
38,844 Satisfied Customers
Experience: ASE Certified Tech

Ron is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV.

DutchUSA

< Previous | Next >

Meet the Experts:

Chris (aka-Moose)

Chris (aka-Moose)

Technician

1,345 satisfied customers

16 years of experience

Ted G.

Ted G.

ASE Certified Technician

1,754 satisfied customers

20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness

George H.

George H.

ASE Certified Technician

1,564 satisfied customers

ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist

GM Tech (Cam)

GM Tech (Cam)

Auto Service Tech

680 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Amedee

Amedee

Former ASE Master Tech

2,562 satisfied customers

ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

Jerry

Jerry

Master Mechanic

2,181 satisfied customers

ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager

Richard

Richard

ASE Certified Technician

1,009 satisfied customers

12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes

< Previous | Next >

Related Car Questions
I have 2005 hummer h2 with 6.0. The ac pressures climb as
i have done a system in it i have done compressor receiver dryer orifice tube and condenser it charged to oem spec with oil and refrigerant. … read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
1,054 satisfied customers
2000 dodge durango 5.9l / I replaced the ac compressor,
2000 dodge durango 5.9l / I replaced the ac compressor, expansion valve and dryer. when charged i can only get the air temp to 80 degrees coming out of the center vent on max ac. can this be a defecti… read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
1,321 satisfied customers
Ac problem. pressure are correct but when I get rpms to 1500
ac problem . pressure are correct but when I get rpms to 1500 the low side drops out and the AC cuts out . the ac is not that col either… read more
ggrote1
ggrote1
Vocational, Technical or Trade Scho
13 satisfied customers
On a 2003 escape 3.0 changed out compressor,charged with
on a 2003 escape 3.0 changed out compressor,charged with Freon,seem to do fine,cooled great. now with gauges on at 45 psi clutch kicks in then about 2-3 secs back out and pressure drops to nothing and… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
38,844 satisfied customers
2001 lincoln continental: the AC..freon..blows..compressor
My wife has a 2001 Lincon Continental and the AC is not working properly. The freon pressure was a little low, so I adde a 12 oz can of 134a and now it is in the correct range (30psi with compresser r… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
A LITTLE STUMPED ON THIS..BLOWS WARM AIR..COMPRESSOR
I AM ALSO A TECHNICIAN BUT I'M A LITTLE STUMPED ON THIS ONE. MY 2004 OTTOWA YARDHOARSE BLOWS WARM AIR. COMPRESSOR CYCLES. IT HAS 3LBS OF FREON IN IT. MY PRESSURES SEEMED A BIT LOW. LOW SIDE:40 AND HIG… read more
Matt J
Matt J
Owner of Jones Automotive
Vocational, Technical or Trade Scho
1,000 satisfied customers
2002 mazda: v..bad air compressor but blowing warm air
2002 mazdz v-6 tribute---not old enough to have a bad air compressor but blowing warm air---could it be that switch that's on the ( i think it's called a compasitor) which went wrong on my suburban an… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
96 chevy astro: compressor, the expansion tube..old one..accumulator
I have a puzzling ac problem. I have a 96 chevy astro van with a dual ac system. I replaced the compressor, the expansion tube (the old one was not bad) and the accumulator, flushed the condenser, fro… read more
john
john
MASTER AUTOMOTIVE TECHNICIAN
2 YEARS COLLEGE
10 satisfied customers
my ac..cold the clutch kicks on for a few seconds at a time
my ac system is full but not blowing cold the clutch kicks on for a few seconds at a time every 20 seconds or so… read more
Tim West
Tim West
Service Manager
Computer/ Automotive certifications
16 satisfied customers
1986 Mazda B2000: rebuilt compressor..rev..disconnected
1986 Mazda B2000 pickup, A/C doesnt get cold, system is not low, worked fine last year, installed rebuilt compressor and drier last year, A/C at idle is 80 degrees at registers, if you rev it up to 20… read more
autotech155
autotech155
Head Technican
Vocational, Technical or Trade Scho
182 satisfied customers
2003 Nissan Frontier: cars..ac does not blow..four have no freon leaks
Hello, I am a car wholesaler with 4 cars (2001 S10 PU, 2003 Nissan Frontier, 2002 Saturn, and a 2003 Suburban) that the AC does not blow cold on. All four have no freon leaks, been properly charged, a… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
1998 Honda Civic: ok until..well @ hyway speeds (dash temp 40 degrees
1998 Honda Civic in Florida. The A/C has worked ok until a few days ago. It seems to work well @ hyway speeds (dash temp 40 degrees on recirc.). When idling it clicks on & off rapidly several times th… read more
Triston
Triston
High School or GED
1,134 satisfied customers
Ac system..freon..a home recharge kit then took it to Tires Plus
My ac system will not accept freon. I tried it using a home recharge kit then took it to Tires Plus and they could not get the system to accept freon. What might the problem be? I know how to do this … read more
Toyotapro
Toyotapro
Technician
Vocational, Technical or Trade Scho
9,283 satisfied customers
1990 chevy truck: The compressor..clogged..flushed..pressure switch
The a/c in my 1990 Chev truck stopped working. The compressor seemed to be OK (hi pressure overcharging @ ~500#) so I opened the system and found the expansion valve was totally clogged (sandy grit). … read more
john
john
MASTER AUTOMOTIVE TECHNICIAN
2 YEARS COLLEGE
10 satisfied customers
monte carlo: wireing diagram..ac..compressor clutch..already checked
i have a chevorelete monte carlo 1998 and i need a wireing diagram for the ac i canot get the compressor clutch to energize and i have already checked the fuse.… read more
Bob
Bob
Vocational, Technical or Trade Scho
2,784 satisfied customers
2000 PONTIAC GRAND PRIX: ac COMPRESSOR..DIAGRAM..12 VOLTS..V6
2000 PONTIAC GRAND PRIX NO AC COMPRESSOR CLUTCH SIGNAL TO COMPRESSOR AC FUSE GOOD NEED DIAGRAM AND INFO ON PROBABAL CAUSE OF THIS AC RELAY THAT WE CHECKED HAD CONSTAN 12 VOLTS ON 2 SIDES WHEN AC ON OR… read more
Chuck
Chuck
Auto Repair Shop Owner
Vocational, Technical or Trade Scho
78 satisfied customers
1997 Jetta: a can of R134a and the hose assembly/guage..low-side
I just bought a 1997 Jetta. The A/C dosn't work, so I bought a can of R134a and the hose assembly/guage. The low-side reads high, in the RED. What does this mean, and is there something I can do mysel… read more
Firsthogman
Firsthogman
Meter Specialist I
Associate Degree
296 satisfied customers
Deville: high pressure..low pressure..pressure switch..flushed
1997 cad deville has high pressure on the low side and low pressure high side Ihave replaced the compresser accumlater cycleing switch high pressure switch flushed and cleaned the system and still hav… read more
Firsthogman
Firsthogman
Meter Specialist I
Associate Degree
296 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x