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R134a Conversion

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    #31
    OK, thanks
    89 CV LX 225/60 x 16 tires, CC819 rear springs, Front & rear sway bar, trans & PS cooler from 90 cop car. KYB shocks, F-150 on rear. Dual Exhaust w/ H pipe. Dark brown door panels, carpet, steering wheel, trim parts from a 87 Mer GM. Power front buckets from 96 Jeep Cherokee. LED'S front & rear. 3G Alt from a 97 Taurus wagon 3.0. Electric fan. Rear axle from a 97 PI 3.27 with disk brakes. Headlight relays.

    Comment

      #32
      say john did you ever ask anyone else on the site weather or not that hissing is normal when the car is running? I'm curious to know about that.
      -Phil

      sigpic

      +1982 Ford LTD-S Police Car. Built 351w, Trickflow 11R 190 Heads, Holley Sniper EFI, RPM Intake+ Hyperspark dizzy, WR-AOD, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, HPP Steering Box.

      +2003 Acura CL Type S 6-speed

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        #33
        No I haven't. Does anyone's A/C hiss when it is shut off for a little while?

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          #34
          Originally posted by 86VickyLX View Post
          No I haven't. Does anyone's A/C hiss when it is shut off for a little while?
          Vacuum leak it should be the vacumm canister or the soup can Getting mine this weekend

          1989 mercury grand marquis gs / 2014 ford focus s daily driver
          302 lopo with ho upper/ aod with trans go shift kit
          k code 3:55 posi rear/big brake swap tow package car

          Comment

            #35
            Originally posted by gabegt90 View Post
            Vacuum leak it should be the vacumm canister or the soup can Getting mine this weekend
            it could also be the check valve

            1989 mercury grand marquis gs / 2014 ford focus s daily driver
            302 lopo with ho upper/ aod with trans go shift kit
            k code 3:55 posi rear/big brake swap tow package car

            Comment

              #36
              Originally posted by gabegt90 View Post
              it could also be the check valve
              The car is off. and it's still hissing????

              Comment

                #37
                yes, they hiss for a while till the pressures equalize after its shut off.
                86 Lincoln Town Car (Galactica).
                5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

                91 Lincoln Mark VII LSC grandpa spec white and cranberry

                1984 Lincoln Continental TurboDiesel - rolls coal

                Originally posted by phayzer5
                I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

                Everything looks like voodoo if you don't understand how it works

                Comment

                  #38
                  Originally posted by gadget73 View Post
                  yes, they hiss for a while till the pressures equalize after its shut off.
                  Ok thank you so much Gadget. I was getting worried.

                  Comment

                    #39
                    I have a quick question thats sorted of related you might be able to help me with. I have the 134a conversion done. New compressor, evaporator, accumulator, lines, and its properly charged and holding. The thing is, if you turn the A/C on, the compressor will only come on it you fiddle with A/C WOT relay (unplug-replug halfway kinda). Jumping the clutch cycling switch didn't work, the old relay was tested and worked but it still did it when swapped with another spare A/C relay, a brand new one, and the connector for it was replaced as well. Is there a another sensor I'm missing for the A/C system that might cause the relay to get power. The car's not showing codes and the TPS is new and I thought that relay only got power at 80% throttle. Thanks in advance.
                    sigpic
                    1986 Grand Marquis LS 2 Door
                    Ext: Medium Shadow Blue Metallic, Int: Midnight Blue, 3.08 open, 235/70/15 Goodyear Aquatread III, Rebuilt AOD w/ Transgo Shift Kit, 3G upgrade from 95 5.0 Mustang, Walker Dual Exhaust w/ H pipe, Viper 5900ST alarm, De-smogged, Rear Civ. Sway Bar, and more.

                    Comment

                      #40
                      the WOT cutout relay shouldn't get any power to it's smaller connectors when the AC is operating. The relay is powered by the ECM at 7/8 throttle to cut the AC out. Sounds like its being triggered improperly, maybe a bad TPS or something.
                      86 Lincoln Town Car (Galactica).
                      5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

                      91 Lincoln Mark VII LSC grandpa spec white and cranberry

                      1984 Lincoln Continental TurboDiesel - rolls coal

                      Originally posted by phayzer5
                      I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

                      Everything looks like voodoo if you don't understand how it works

                      Comment

                        #41
                        Originally posted by 86GmLsCoupe View Post
                        I have a quick question thats sorted of related you might be able to help me with. I have the 134a conversion done. New compressor, evaporator, accumulator, lines, and its properly charged and holding. The thing is, if you turn the A/C on, the compressor will only come on it you fiddle with A/C WOT relay (unplug-replug halfway kinda). Jumping the clutch cycling switch didn't work, the old relay was tested and worked but it still did it when swapped with another spare A/C relay, a brand new one, and the connector for it was replaced as well. Is there a another sensor I'm missing for the A/C system that might cause the relay to get power. The car's not showing codes and the TPS is new and I thought that relay only got power at 80% throttle. Thanks in advance.
                        Did you try replacing the wiring that connects to the harness? 87_Crown_Vic had a similar problem with his fuel pump relay. It wasn't the the relay, it was the wiring for it.

                        Comment

                          #42
                          Yep, I replaced the harness, used the old relay, a spare, and then a brand new one. I think I might redo the soldering at the connector and see if that helps any. I know the wires are in the correct spots as I swapped em one by one but that'd never hurt to double check. I was just hoping there was a low oil/pressure switch for the A/C I might have been missing. These relays are definitely being a pain these days, the cover for the other one accidentally went upside under the closed hood but took water during a heavy rain and shorted/fried the fuel pump relay which I thought killed the fuel pump because it was running and running til the battery died. My Dad and I tested fuel pressure at the rail and what we thought was the relay which tested good so I now have a brand new Bosch fuel pump when it was just a bad relay. The problem was I replaced both connectors but they only had the green plug ones so it was just a dumb mistake, but I've got a very quite fuel pump and working spare now. ahh
                          Last edited by 86GmLsCoupe; 07-18-2008, 11:24 PM.
                          sigpic
                          1986 Grand Marquis LS 2 Door
                          Ext: Medium Shadow Blue Metallic, Int: Midnight Blue, 3.08 open, 235/70/15 Goodyear Aquatread III, Rebuilt AOD w/ Transgo Shift Kit, 3G upgrade from 95 5.0 Mustang, Walker Dual Exhaust w/ H pipe, Viper 5900ST alarm, De-smogged, Rear Civ. Sway Bar, and more.

                          Comment

                            #43
                            I've had the AC working some here and there. The problem is the relay itself, everything works fine otherwise. The problem I'm having is getting the proper relay for it to keep working. I have two Standard Motor RY68 relays but they have 3 little pins and two larger ones. With them I can't get the AC back on. I popped in a ford E5----- relay and has three small pins and one larger pin and it worked but it burnt out, and the other E5---- spare would probably do the same if I keep kept using it. I'm gonna keep looking for a Ford one in the yard but in the end I may end up just having to wire in a Bosch one. Does anyone have the part number for the A/C WOT relay I need (oem or aftermarket), I been through so many I lost track of what was in there to start with. Also does anyone have a diagram for the relay, I can't seem to find the info in my EVTM, Helm/Ford, or Haynes books. Thanks again.
                            sigpic
                            1986 Grand Marquis LS 2 Door
                            Ext: Medium Shadow Blue Metallic, Int: Midnight Blue, 3.08 open, 235/70/15 Goodyear Aquatread III, Rebuilt AOD w/ Transgo Shift Kit, 3G upgrade from 95 5.0 Mustang, Walker Dual Exhaust w/ H pipe, Viper 5900ST alarm, De-smogged, Rear Civ. Sway Bar, and more.

                            Comment

                              #44
                              Dy-886
                              F8pz-14n-135-ca
                              motorcraft relay that's the one I got when I replaced it 2 years ago
                              Last edited by gabegt90; 08-04-2008, 08:02 PM.

                              1989 mercury grand marquis gs / 2014 ford focus s daily driver
                              302 lopo with ho upper/ aod with trans go shift kit
                              k code 3:55 posi rear/big brake swap tow package car

                              Comment

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