Connect

Car Pictures

Shopping

Classifieds

News & Articles

Car Forums

Automotive Links

(Bookmark CarJunky)

	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	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   Drive Shaft Repair I have a 2015 Chevy Traverse AWD. The fr...   2006 Toyoto Camry XLE Driver Side Electric Window Trouble Hello, Looking for a little brain help ...   Tierod end change caused some kind of leak Hello so I just took my car to the nearb...   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a... Grounding Cable, 2017 Jeep Renegade Trailhawk The Cable that connects my negative batt... Rough Idle (Found new thing) Hi everyone. First of all sorry for bad ...     equipment hey yall. im a first year engineering st...   HELP I have a 1956 1/2 ton panel truck, 69 35...   Howdy     Just wanted to s...   ABS/Tractiob/Brake Lights on But No DTCs Hello all, Recently while driving m...

Search Auto Parts Search 90 Merc Grand Marquis 5.0 V-8 Sedan A/C 60,000 miles Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> AC Auto Repair Help Forum Cindyl541 User Mar 2, 2010, 5:14 PM Post #1 of 3 (1520 views) 90 Merc Grand Marquis 5.0 V-8 Sedan A/C 60,000 miles Sign In Hi Again...My car is still running like a top but as usual, buying a car in the winter causes people to forget to check the A/C. Our local dealer says it's not the freon. He says parts are difficult to find and expensive to replace. I know he's a dealer but thought I'd get a second opinion from all of you smart people here. I can live without an A/C in Oregon and I am so happy with this long beauty, it hardly matters but I appreciate your help! Thanks. cb Cindy in Silverton via the Oregon Coast nickwarner Veteran / Moderator Mar 2, 2010, 9:05 PM Post #2 of 3 (1512 views) Re: 90 Merc Grand Marquis 5.0 V-8 Sedan A/C 60,000 miles Sign In big problem here is this is an R-12 system, and because R-12 hasn't been made due to EPA law for years its obscenely expensive. If the freon charge is ok as he told you, the cause is electrical and there's no reason why you shouldn't be able to get it fixed. There are multiple switches and relays in control of the AC compressor, so a wiring diagram specific to your car will be needed along with a troubleshooting chart. Tom Greenleaf Ultimate Carjunky / Moderator Mar 3, 2010, 3:56 AM Post #3 of 3 (1510 views) Re: 90 Merc Grand Marquis 5.0 V-8 Sedan A/C 60,000 miles Sign In Cindy, Parts are available for anything on that system! How could a dealer tell it wasn't low on Freon? If it doesn't operate you can only tell a static pressure. Common with these is the relay on driver's side under a plastic rain cover or the low pressure cut out switch located on the black. round accumulator on passenger's side near firewall - both underhood. Also, leaks from road debris hitting condenser (looks like a radiator) which is first in front behind grille and would show oil staining. These cars convert easily and work well. Original issues were wild leaks with the "spring lock" hose connections but by now those should have been done. Are you apt to do stuff yourself or need a shop for help with this? I know Oregon is a big state but if by chance you live near Vancouver, WA one of our own, owns a shop there! Not sure if they concentrate on A/C but you could get a real diagnosis at least. If not a Freon (that's a brand name of the type of refrigerant used when new) then what suggestions did you get? Do you know if it's already been converted to 134a? Chances are in a low demand area that along the way it was already as the R-12 (Freon) is now expensive and no longer made new as nick said. Oregon, is perhaps more temperate than where I am and A/C not critical so many shops don't waste the money in equipment to deal with it. T (This post was edited by Tom Greenleaf on Mar 3, 2010, 4:05 AM)   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

Search this forum this category all forums for All words Any words Whole Phrase (options)

Privacy Sitemap