I have power at the clutch connector (disconnected) when A/C is switched on with engine running but. Serving my area. 1999 Ford Escort - the fan is blowing but the air is no longer cold. The A/C switch on the dash switches the compressor on, with one exception. system is charged. The fan is running when AC on. The first thing to look for is the condenser fan being on (if equipped). engage. AC clutch not getting power. If I jumper pin 3 to pin 5 on the relay the compressor clutch will engage and blow ice cold air and 134a level reads good. With the compressor not running, you ambient pressure should be around 100 PSI. relay, fuze,and low pressure switch are replaced. it gets that signal through the power that goes to the compressor. Single switches or relays can fail internally causing a number. High side pressure should be 2. michaelbrainardatwor. Second step: measure the air gap between the clutch and compressor. If the PCM. If the gap is too small, the clutch disc may make noise when the AC is off. If only hot air comes out of the air vents in your Maxima, then the problem probably lies somewhere else. Another thing to check would be the A/C cooling fan system on the radiator if it has dual fans. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. Ac compressor clutch will not engage. It. likely to be low on refrigerant. Get a Quote. 0L. 1999-2004 MY fuse panel schedule: 1999 Mustang GT with 2001 motor swap, wont fire. heres the options: -replace compressor as a whole-replace the clutch on the compressor-recharge the system -replace condenser and the lines. You need a new one if it looks heavily worn down or damaged. If the Compressor clutch engages either the the AC programmer or Control head could be bad. -or-. Posted on Jan 26, 2009. AC compressor clutch is not engaging. 9. it is about 3. The compressor compresses refrigerant vapor and by doing so it converts it to liquid. #9. Victoria. 1999 dodge dakota: the ac blowing hot air i put a gauge on it to see. The center part on the pulley of the A/C. Swapping a different relay into the WOT socket, compressor won't engage. If missing either circuit, check a few inches back from the connector and see if voltage or ground is present there. 88 ford escort 1. The compressor will not engage (Ford escort 1998), there is no power on compressor. 5. 2. You might put a can of the R134 stop leak in that. 5 - 1997 7. While the problem was present I measured the voltage in to the compressor and there is approx 13. As things heat up, the gap increases, and the clutch cannot pull in the plate. I just bought a 99 Tahoe thats been wrecked and sat for about two years I was told. On max a-c ,coolant is shut off to your heater core allowing only cold air in. It will not engage when jamping the high pressure switch or low pressure switch. Wiring on 30 & 87 is proven good. System is charged but compressor clutch will not engage. The compressor will not engage (Ford escort 1998), there is no power on compressor. You are looking to see if the PCM sends power to one or both relays to turn on the coolant fans. 2000 4WD sport 3. -or-. Once it engages, it will not disengage until I turn the truck off, or I pull the fuse underneath the hood. 1999 Ford Escort. The switch is easy to replace. Browse Categories Answer Questions . checked fuses,. It has freon. It could be low on refrigerant, or it could be a bad sensor. Category: Compressor Repair. If the refrigerant charge level is not okay, adjust the refrigerant charge as required. 1989 Ford F150 pickup, air cond. 95' 378. We ship from multiple warehouses across the country, so you get your part as soon as possible. 4 Elocker <--My son's but I still. Cooling, Heating, Ventilation & A/C. Able to fill. #1 · Jul 27, 2009. Ask Your Own Ford Question. There are several ways A/C compressor clutches receive power. The AC mode control switch is not in the AC position. I can bypass the relay and get the compressor to engage and I know I charged it with enough Freon (Low pressure = 35 psi, High pressure = 190 psi) outside temp is about 85* F. Was this. Went in to the BBQ. 3. Jumpering 30 & 87 on the WOT relay socket engages the compressor. I bet your compressor will kick on. . If it's below about 45 psi, then the system charge is low and the cycling switch won't allow the compressor to run. Disconnect the clear connector from the Vehicle Control Module (VCM). While holding the 'REST' button, switch the ignition on (position 2). Find the AC compressor. The clutch is not getting a signal to turn on. It's not possible to get an accurate Ohm reading if there's voltage on the circuit under test. 1999 Ford Escort. the ac switch on the - Ford 1999 Escort question. 755. Connect the kit, start the car and turn the AC on, then just add refrigerant until the low side pressure comes up enough to kick. Ford Taurus: I Want to disconnect the AC compressor on a 2004. The AC compressor is getting a command to turn on but is no longer able to, which would indicate that it needs replacing. The 10a fuse is also good by the AC. If the A/C fan isn't working properly it too might have a safety in place to prevent the compressor clutch from engaging. If the clutch engages, the fault is elsewhere. A system that is low enough that the compressor will not engage will usually accept refrigerant directly from the can without jumping the compressor, just from warming the can with your hands or warm water. Select Your Vehicle: Go. SOURCE: ac is blowing warm air in my 2005 sierra 2500hd duramax. 1999 Ford Escort. 3) For testing, I installed a male/female spice connector in the wire leading to the compressor. It does engage if I jump it off a 12V source. If you have two washers, remove the thinner one. 1999 E430 A/C compressor won't start. My troubleshooting so far: Max AC Ambient temp probe shows normal Blower fan works fine Bypassed pressure sensor Evacuated and recharged refrigerant - no leaks after 5 minutes Checked all AC fuses Condenser looks like it has normal wear and tear1999 Ford Escort. If you have power there, you will need to replace either. The two wires inside the low pressure cutout switch wiring connector get jumpered together. . When you turn on the air conditioning, you expect to feel cold air pour out. diyfixer answered 10 years ago. Jumper the connector with a paper clip or small piece of wire while the engine is running, and the A/C is turned on. Can't find any fuse or breaker labelled AC. likely to be low on refrigerant. Low or High freon pressure (too high or too low of a pressure reading will trip an internal switch not allowing the compressor to engage, thus saving the compressor from damage) 3. The clutch is not getting a signal to turn on. Verify system is correctly charged. Disconnected the TIPM and everything looks normal under there. GCR. Take a paper clip and jump the leads. Electrical problems, dirty filters or a broken thermostat can also prevent an AC compressor from functioning. I can jump the A/C relay to apply voltage to the compressor and it'll engage the compressor and the A/C works great. 2. Today's project is a 1999 Ford Escort ZX2 with 2. There's a wiring fault up stream from the low pressure switch. The compressor clutch should engage. Check Out the Latest Top Trucks Report!If R12, start saving some $$. . Good thing I did, it wasn't. amckane January 9, 2008, 2:05am #1. Anonymous. Note: Dirty cabin air filter mostly only leads to reduced cooling. When the clutch is active (on) 30 to 45 psi is good. This indicates some form of wiring problem. AUTOMATIC. 2. AC compressor will not come on. I get a reading of around 8. The A/C relay is ECM controlled to delay A/C clutch engagement 0. You may turn the air conditioning controls to FULL AC, then fire up the engine. Ac compressor clutch will not engage. 5 v @ hp switch no. 1 answer. The a/c compressor is switched on & off continuously, causing the magnetic clutch to become too hot and fail. Problem: AC Stopped working. It may not even have dual fans)After inspecting the belt, there can only be two things left that could be happening: 1. 0L. AC Compressor Clutch Stays Engaged: Causes & Fixes. 2. Be REAL CAREFUL now! Take a plastic screwdriver handle and "tap" the end of the (not spinning) clutch. I then went to low pressure switch and did a. This bypasses the pressure switch. If the compressor wont come in, its usually one of second things, either the high push switching exists bad, or there your an leak in the system which is not make it to build up. 1999 Mazda MX-5 Miata Base-Maintenance & Repair. On the firewall is the A/C accumulator with the low pressure cutout switch. The codes were reset. I replaced the pressure sensor at the firewall, didn't help. 6. -or-. 3L/T-56 swap under way, ext. if discharge air IS cold - the problem is most likely a faulty low pressure switch -. When compressor fails to engage, check pressure switch and AC relay and AC fan relay. A/c has full freon but the compressor clutch wont engage. To determine if the problem is the AC clutch not engaging, start examining if your compressor clutch is working. Now, the air works, but when the dial is in the AC position, the compressor will not shut off every so often like it's suppose to. Yes there is a relay. If your Air Conditioning compressor isn't working (the clutch won't engage) then watch this video. It takes about 20 minutes. Electrical problems, dirty filters or a broken thermostat can also prevent an AC compressor from functioning. 2. Take a screw driver and push on it with the AC on if it engages it might be the spacer it's like a little washer under the clutch The clutch is just a magnet if the spacer is bad it won't engage sometimes it might have to come out take the center bolt out and pull it off and check the spacer and bearings, also why it's off clean it. Hopw it helps ya. Testing high pressure switch. If nothin happens, ac clutch bad. Wiggled switch on compressor (could not get it to release, because I couldn't figure it out) Clutch will turn by hand,. If the compressor works when you jump it, and the A/C blows cold air, the system contains refrigerant and the fault is likely a bad A/C compressor clutch relay or a bad clutch. In short description. The compressor will engage jamping directly to battery. If the static pressure is above 45 psi, there's likely an electrical issue. The compressor’s job, in turn, is to. 7. Sep 14, 2011. (Though I don't know anything about the 00' Explorer configuration. -Novi 2000 8-10 psi -42lb inj, 80mm M/A, Focus F/P -75mm Throttle Body . If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, a low pressure switch lockout, or even a bad engine coolant temperature switch. Check the front of the compressor clutch. If the system is at correct charge level the low side pressure will show above normal range. If I jumper pin 3 to pin 5 on the relay the compressor clutch will engage and blow ice cold air and 134a level reads good. Turn A/C off. Bypassed relay to engage compressor. Q&A: Ford E-150 A/C Compressor & Condenser Issues - JustAnswer. . The Compressor Does Not Kick On At All. 0 vin 3 engine and with automatic transmission. unplug the electrical connector at the a/c compressor clutch. I am interested in finding out what the part actually is that helped to make your AC work again. Press on the low-pressure valve for a split second and see if freon or air sprays out. If the compressor works when you jump it, and the A/C blows cold air, the system contains refrigerant and the fault is likely a bad A/C compressor clutch relay or a bad clutch cycling switch or pressure switch. Just shoot me - No more AC. MikeLC said: On Max A/C settings the Compressor clutch doesn't even try to engage. 1980 posts · Joined 2009. This is because a clogged or leaking evaporator won't get enough refrigerant to cool the. Manually run one wire from the positive side of battery to one of the wires of the clutch connector, one of them should complete circuit and clutch will engage. Check for ground on the black wire. if it uses r12 then it probally will have to go in for service. Dirty or clogged condenser. . Method 2: Jump-start the clutch. Hi, you should never bypass the compresor because it may cause damage to the sistem including the compresor,even if the sistem is charged if it gets a little low it may prevent the cluth to engage to prevent damage ,be sure that you have the proper freon presure. Go out and wiggle the crap out of that connector. If compressor clutch does not engage, go to next step. 2. The clutch is not getting a signal to turn on.