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I have a 78 Lincoln 5 that the a/c runs constantly on. Air
I have a 78 Lincoln Mark 5 that the a/c runs constantly on. Air is cold but I never see the compressor cycle. What controls the cycling of the a/c clutch? … read more
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Ron. Another 68 Galaxie heater blower question. We've worked
Hey Ron. Another 68 Galaxie heater blower question. We've worked on this before on a previous conversation. Heater blower will run constantly when it is on low speed but when you bump it up to medium … read more
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70 Corvette A/C, restoring: evaporator, condensor pressure
70 Corvette A/C, restoring: evaporator, condensor pressure checked; dryer= new dysectant, compressor no noise and worked fine prior to tear down of car. Pulled vac=no leaks. Put in about 2oz ester oil… read more
kalamykid
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1973 Ford LTD Where is the pressure switch that kicks the
1973 Ford LTD Where is the pressure switch that kicks the a.c. Compressor on? I can jumper the compressor clutch & get cold air. But the system isn't sending the signal on its own.… read more
Dr. Hamman
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I have a 1971 El Camino SS with the Ls5 454. The car is a
I have a 1971 El Camino SS with the Ls5 454. The car is a restoration that is 95% finished. My problem arises with the A/C electrical. Keep in mind all the wiring is new but original relays ect. The c… read more
Lou P. master tech
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ford: where is the low pressure port on a 1974 ford 5.0 li
where is the low pressure port on a 1974 ford 5.0 liter. switching from r12 to the new 134a refrigerant.… read more
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Mercury: I have a 1949 mercury totally stock inside and out
I have a 1949 mercury totally stock inside and out including flathead motor. It has been converted to 12volt . Nothing else has been changed. What do I need to do in order to install an air conditione… read more
K. Wiggins
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I have 1970 thunderbird charged ac comp jumped battery to clutch
I have 1970 thunderbird charged ac comp jumped battery to clutch after charge disconnected clutch will not engage with ac switch… read more
Dr. Hamman
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Chevy C10: Hello. The a/c compressor in my 69 Chevy truck
Hello. The a/c compressor in my '69 Chevy truck seemed to be seizing above idle when the clutch was engaged, causing the belt to screech. I assumed the compressor was bad, so installed a new one and h… read more
Don
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GM chevelle: I have 1967 air conditioned chevelle. Installed
I have 1967 air conditioned chevelle. Installed a ZZ4 350 crate engine that came with a R4 radial air compressor. The old compressor was a GM frigidaire(NNN) NNN-NNNNcompressor. I need to pig tale bet… read more
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Dodge Monaco: I am doing a conversion from R12 to R134A on
I am doing a conversion from R12 to R134A on my 1971 Dodge Monaco and want to also convert from the existing EPR valve to a clutch cycling switch but can't seem to find a source or part number for suc… read more
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1972 Volvo: AC system..I also have twin electric fans
I just installed an AC system in a 1972 Volvo. It uses a modern compressor(Sanden 508) and a modern condensor. It has new tubing; new drier; and a new trinary valve bcause I also have twin electric fa… read more
Dave Nova
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1976 Firebird: air condition..my ac system..compressor..refrigerant
Greetings, I need a technician who is familiar with an air condition system on a 1976 Firebird. I have upgraded my AC system with GM A6 PRO6TEN compressor supplied by Old Air Products in Fort Worth TX… read more
Dr. Hamman
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1973 CHRYSLER NEWPORT: CLUTCH..PULLS..BLOWER CONTROL WORKS .
THE CLUTCH ON MY COMPRESSOR PULLS IN WHEN I TURN THE KEY ON . 1973 CHRYSLER NEWPORT . BLOWER CONTROL WORKS . WHAT IS KEEPING POWER TO THE CLUTCH .TOM… read more
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Ford Mustang I have a Elec Fan in a 1965 Mustang 289 V8. When
I have a Elec Fan in a 1965 Mustang 289 V8. When I turn the A/C on, the fan does not start. Only when the vehicle reaches higher temp does the elec fan kick on... that is when the AC starts to blow co… read more
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1976ChryslerNew Yorker: coolant..psi..The compressor clutch..cold air
Have a 1976 Chrysler New Yorker air conditioning that is blowing hot air. Have checked the coolant pressure, it's at about 38 psi (R12 refrigerant). The compressor clutch is working, but no cold air. … read more
Dr. Hamman
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1968 Buick: electrical..V6..clutch..the alternator at idle or
Need someone who has extensive experience with automotive and or marine engine electrical component answers. Application 1968 Buick V6 odd fire marine engine. OMC stringer clutch magnets. What is the … read more
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1974 marquis: that has been garaged for the last 30 years..road..freon
I have a 1974 marquis that has been garaged for the last 30 years, 11000 miles. It is back on the road but I am having trouble with the A/C system. It only has a 1/4 oz of freon. I cannot get the syst… read more
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Meet the Experts:

Dr. Hamman

Dr. Hamman

Technician

2,436 satisfied customers

I have 30 years experience repairing, restoring, and customizing cars, and pickup trucks.

Don - Mo Lurch

Don - Mo Lurch

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Heavy Line Mech-, Mobile Electronics. Sales, Installation & Repair for 30 years. R/S, etc.

Don

Don

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30 years of experience and we have 4 classic cars our selfs

Mike S.

Mike S.

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A.S.E. certified with 25+ years experience.

K. Wiggins

K. Wiggins

Classic Car Mechanic

431 satisfied customers

ASE Certified Technician, Associates Degree in Automotive Technology, 15+ years in the trade

Dave Nova

Dave Nova

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ASE Master Certification. GM World Class Certification

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Road Side Jerry

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280 satisfied customers

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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.

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