Peugeot 308 AC not working diagnostic repair. PART 1
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- เผยแพร่เมื่อ 22 ส.ค. 2024
- Peugeot 308 1.6thp AC blows warm air. Was diagnosed by mechanic as failed compressor, however this was not the case.
The AC system components all work correctly. It was actually a failed thermostat housing which was preventing the AC from being switched on. - แนวปฏิบัติและการใช้ชีวิต
great video and comments mate! thanks for taking the time . my sons 2014 308 3cyl just came back form mechanic saying the gas was fine after I had suggested regas was the solution. I’ll direct him to Scan because there was an existing fault light ,and test thermostat housing .Last year a different workshop replaced the fan and fan control to rectify a fault light , that lasted a week and then light came on again but didn’t affect cars operation ….now air is not working ..
I'm also Australian and having an issue with my 2015 308 1.6THP air conditioner not blowing cool. It was icy cold prior to this, but i've been getting 'Engine fault repair needed' messages when running the A/C for a few months now. I ignored them thinking it was just a dodgy sensor. I rarely use the A/C anyway, but noticed yesterday it was not cooling very effectively at all. The compressor does not make a 'click' sound when switching A/C on or off. I'm hoping the compressor is OK and it just needs a regas, as I read online there is a sensor which will disengage the compressor if there is insufficient pressure. I saw Supercheap Auto sell a can of refrigerant for $200 and I could DIY, but would like to get it leak tested somewhere preferably, probably end up costing about the same either way. If it's the compressor, I will not be happy at all... my car has only done 83,000km. I have a full service history for this car but don't think the A/C system has ever been serviced. Fingers crossed it just needs a regas..
Hey mate, Get yourself a scan tool if you haven't got one already and check out those engine codes, that'll give you a good hint what the problem is - the engine management is most likely preventing the AC turning on due to a fault. By the way, you wont hear the AC compressor click like you might be familiar with, since the compressor is a variable displacement type - these don't have a mechanical clutch. Coming out of the cooler months, you've probably only noticed it's an issues since we've had some warmer days recently. I'm guessing it hasn't been working for a while. Work out what the engine faults are before touching the AC system - chances are there's nothing wrong with it.
@@Justfixitmate Thanks mate for your quick response and the info. Yes, I do need a scan tool, I did some research into this a while ago but it sounded like installing the software on the computer could be very problematic (this was for Lexia/PP2000 scan tool). Not sure if a generic scan tool would be much help. Do you have any suggestion for an appropriate tool? That's good to know about the compressor too, I was worried it might have packed it in. Sounds like it might not be as bad as anticipated. I know a previous mechanic just over a year ago told me that some sensors were on their way out, maybe its one of them causing the issue. Yet the mechanic said there were no problems with the car when it was serviced (and scanned) a few months ago though. Will do a bit more research on the scan tools.. hopefully can get this problem sorted this week. Cheers.
I'm from Australia too, I have a Peugeot 308 2009, AC not cooling.
History: had it regased back in December, was cool for 3 days then went away aka leak, went back to automasters they said it had a leak on high pressure line and near the condenser, was going to charge me $1500 for parts, and so I did it myself replaced all the lines from compressors to condenser and also the condenser its self as well.
Got it regased last week to be told they don't know why but it won't cool down. not leaks now, followed your video to test sensor, sensor reads around 1.2V and diagbox 9 bars. not sure how to test compressor safely, can i connect directly to battery and have car running and see if to cools to rule out compressor, changed thermostat 2 years ago, tested it its find and know errors to do with air con or the thermostat detected.
so not sure what to test or what it could be
Hey mate, When I had this issue, my scan tool wouldn’t pick up the thermostat codes. I needed to use peugeot planet. But it sounds like you’ve checked that all out. If your compressor is a variable displacement type like mine, it's a bit more difficult to test the compressor. Do not directly connect to 12V, as you could burn out the solenoid and possibly your BSI too. These operate with PWM / variable duty cycle. To test mine, I completely unplugged the vehicle loom and connected a benchtop power supply to the two pins on the compressor. By limiting the current and slowly bringing up the voltage I was able to hear the compressor sound change and feel the cold air inside the cabin. I didn't exceed 6-7V from memory current draw was a few hundred mA. I only tested for a very short period too. Did you install a new condenser or one from the wreckers? I’m pretty sure the receiver drier is integrated - was this checked out by your AC guy - could be freezing up? Do your AC lines get cold at all? Is the correct amount of oil in the system?
@@Justfixitmate Okay so 14v without plug being connected to bsi connected on pin 4 connected it dropped to 11.8v about to test from compressor connection, but ohms was 12 from bsi connector to compressor
@@Justfixitmate 12 ohms at compressor as well
@@GeraldBirkett 12 ohms sounds about right. Your best bet might be to get your AC guy to measure the AC line pressure with gauges. That will tell you if your compressor is working. So they re-gassed it, said there were no leaks, but it didn't work and couldn't tell you why? Did they then evacuate the system after that or leave it charged with gas? Might be worth taking it to a different AC guy.
@@Justfixitmate kept it charged with gas, I asked them too and they did show me the measurements on the machine where high line was and the low line was, but the compressor wasn't kicking in, was thinking it was a loose connection, but I've gone over it myself from pressure sensor and the volt was the same as what you pulled as well so I know the system has the right gas in it and also checked on diagbox and it was 8-9 bars and that's within range of the compressor will cut anything under 23 bars so it should be turning over also I measured 14v at the compressor plug end connector while running as well so if there is power going all the way to compressor it should be turning over.
Great video, watched all three. I know most of the car's AC which should have high and low pressure switches, do you know where is the low pressure switch at? Under the dashboard? My car measured 1.3v at hight pressure switch, and 1.2v at compressor side, I tried to use 1k resistance bypassed the thermostat housing, not working. What else left? AC Relay?
Hi, great video, I got an issue for you. Ac working fine until after a belt change, now the clutch doesn’t engage with the new ac belt. Citroen C3 1.6hdi. What are your thoughts?
My wife's Peugeot 308 i.6 HDI (2008) was blowing warm and was re-gassed at Halfords, but a few months after, cooling performance very poor. When switching on AC, you can hear the compressor and hissing, and the load on the engine, but only warm air blows. Struggling to know who to trust for a proper diagnosis.
Since these video a few years back I recently had a leak in my AC system. After wasting money on a few visits to a "professional" I was still losing gas. I ended up finding the leak myself - It ended up being a small leak at the firewall at the connection to the evaporator. Difficult to visually check due to the location. Replace the o-rings and had re-gassed - has been good for quite some time now.
Hello! I'm so glad I found your video. I have a Peugeot 3008 from 2010. There is a strange problem with the air conditioner. After switching on, the compressor rotates for about 1 minute, then switches off. After 2-3 minutes, it switches on again and cools down well. But sometimes it doesn't switch back. We have already replaced the compressor, evaporator sensor, air conditioning cooler. There is enough coolant, the pressures are fine. Diagnostics does not indicate an error. We don't know what the problem is. Do you have an idea what we should see?
G'day, to me it sounds like you may have insufficient gas, or an overcharged system. This could result in these kinds of symptoms. A faulty pressure sensor I suppose could also lead to similar behavior. The ECU will turn off the compressor if the pressure detected is too high or too low to prevent damage to the compressor. If you are sure it has been correctly charged with gas and oil, then perhaps worth checking the pressure sensor. I believe they're threaded onto a shrader valve and can be replaced without discharging the system. My older scan tool didn't detect the DTC relating to the thermostat housing by the way. However if there is an issue with the thermostat housing or cooling system, you might experience the thermo fans running after ignition is turned off.
@@Justfixitmate Thanks for the reply!
Yesterday afternoon we checked the amount of gas. The factory specification was 450 g, and the filling in the car was 439 g. We added 450g to the car but the error is still there. I will try to get a pressure switch today. I will report the results!
@@SchafflerFerencBro died before he could report the results. R.I.P
Hello....in my car is ac problem..peugeot 207....but everything is good but current not passing..so have any opsence.
Hey, great video ! Do you know were I can find the electric diagram ?
You little beauty :) just bought a 3008 and have a similar problem. Mechanic said it's compressor but I'm not convinced. Is the compressor 12v?
Yep the solenoid is driven by a PWM 12V signal. I tested my compressor by unplugging the solenoid connector and powering it from a power supply with the engine running. I slowly ramped up the voltage, but didn't exceed ~10V which was enough to see sufficient cooling and determine that the compressor was OK. How did you go with yours? Make sure you watch part 3 btw.
what should be the voltage on the plug if the pressure in the air conditioning system is good?
Cheers mate!
Hey. When you tested the ac system in the 308. Did give 12v on pin 4 and 5 to test if the system is ok?
I bypassed the BMS and powered the compressor valve directly - see my other comment below.
Hi I' d like to know, the aircon in my Peugeot 308 only cools on the drivers side at the openings. Theres no cooling on the passengers side only normal air. What can the reason be? It is a 2016 model 308. Thanks in advance. Andre Henning.
G'day, if it has dual zone climate control, could be issues with mixer flap stepper motors in the heater matrix. do you get cold air in the rear passenger seats?
@@Justfixitmate the car dont have dual climate only the front outlets, also no rear outlets
Is there such a thing as a fuse for left indicator. Have replaced bulb and still doesn't work..
I remember having a similar issue with my 307. It was just a bad contact in the lamp assembly due to moisture/corrosion in my case.
What scan tool did you eventually use to pick up the thermostat housing error code?
wish I knew, I think I have the same problem
which engine type model or make is this?
I have a Peugeot 207 2012 model. When I turn on the aircon my car goes into limp mode. Can anyone say what could be wrong. I start the aircon and it works for 2 minutes.then the engine goes into limp mode. But when ac isn't on car goes good
By pass the switch