2019年8月12日 · The fan needs to be able to keep the engine under all conditions. But because of emissions the engine needs a thermostat that keeps temps high. So once the thermostat opens, a high cooling fan speed is needed to keep from overheating. 2) But running a cooling fan on high all the time would present a large electrical draw which affects fuel economy.

2024年5月27日 · Hello, I am trying to solve a problem with the low-speed cooling fan operation on a 2006 PT Cruiser base model with the 2.4L MFI DOHC 4 CYL VIN B engine with 5 speed manual transmission. When the air condition is active the low-speed fan will not operate. Within moments the air conditioner stops...

2023年5月22日 · On and earlier post ( see 2004 PT GT Turbo: Cooling fan or PCM?) I wrote about the issues I was having with codes that kept popping. Got busy with other things and came back to it and just now warming up the engine got another P0480 code. Turned off the engine and the fan proceded to run full blast.

2022年2月9日 · You start engine and engage air conditioning system (compressor). Radiator cooling fan does not engage and eventually causes exess system pressure and venting of refrigerant. However there are instances where the engine will reach operating temperature, radiator cooling fan starts to run properly and there are no issues.

2018年12月23日 · Hi, I have a 2012 caravan that recently has developed some weird issues with the radiator fan. The cooling fan will run for about 30 seconds after the van is shut off. Sometimes it will also start running when the doors are remotely unlocked and the van is cold. I …

2014年6月25日 · I have a 2007 PT and the ac cooling fan is not turning on even though the high side pressures go well over 300 psi. I am trying to diagnose the problem but the Mitchell manual shows a cooling fan module in front of the rad for 2007 but I have two relays on the back side of the fan shroud. If...

2023年7月3日 · Separate the 4 wire electricalal connector at fan shroud assembly. Connect jumper wire from battery positive terminal to pin #1, fan shroud assembly side of wiring. Connect jumper wire ito pin #2 and pin #4 at fan shroud assembly side of wiring connector in turn. You should hear and feel the relays click.

2022年9月12日 · It may have some air, instead of 100% refrigerant in the system. The A/C system is a closed system, if you had to add refrigerant, you have a leak. The leak must be found & fixed first & the cooling fan must work. The compressor can compress 'air', but the high side pressure can skyrocket (especially if the condenser/radiator fan isn't working).

2018年5月20日 · The cooling fan issue was diagnosed as a inoperable low speed fan relay. It required the replacement of the entire fan assembly. Unfortunately, the car is out of the 3yr/36,000mi warranty so I had to eat the cost but at least it's fixed.

2021年6月21日 · 2006 Grand Caravan. The cooling fan stopped working. Replaced the cooling fan relay, everything seemed to be normal. 4 weeks later, cooling fans are both staying on even when the van is off and runs until the battery is dead. Decide to take it to a mechanic.