LIQUI MOLY Air Flow Sensor Cleaner | 200 ml | Service spray | SKU: 4066

Excellent for cleaning air flow sensors. It worked for me. After cleaning the MAP and MAF sensors the car engine seems to be running better.

Bought this to clean my car exhaust o2 sensors due to high emissions, it cleaned them with ease and very effective. Excellent product does what it says on the tin I give product and seller 5⭐️ Stars also recommend to everyone.

Did nothing

works as it should, good value for money

Excellent product, works just as described. I was having problems with my car's engine (Volvo 1.6 turbodiesel i.e. the notorious 1.6 PSA diesel) routinely going into limp-home mode or cutting out completely when hitting 3,000 RPM, and due to the car's mileage (66k) my thoughts instantly turned to potential DPF issues. After visting a local garage for a diagnostic check, they couldn't identify the problem but suggested either clogged injectors or the DPF might be the cause, both of which could prove costly to fix. They recommeded using some DPF cleaning additives first, but after trying this it didn't seem to make much difference (other than my MPG dropping slightly)I wasn't wholly convinced, and after purchasing an OBD II diagnotic reader (also from Amazon, which worked perfectly - look for the reader sold by "RisingTech" if you are interested), the codes it brought up directed me towards Air & Fuel Sensor issues. I then visted some online Volvo forums & discovered a common issue which caused similar symptoms was the Mass Air Flow sensor getting contiminated. In most cases the sensor just needed to be cleaned rather than replaced, and several forum users recommended Liqui Moly's air flow sensor cleaner.Finding the product on Amazon UK for £10.33 (which, at the time of writing, is significantly cheaper than elsewhere), I was further reassured by the number of positive reviews, so I figured why not try it? After purchasing the cleaner & cleaning the sensor (a bit fiddly to remove but with some patience it was straightforward enough), my car is running superbly, pulling under acccelaration with no hesitancy at all (unlike before) and the MPG is back up to what it was previously. Although the product is small (200ml) a little goes a long way and you don't need to use a great deal. Just make sure that after cleaning the sensor, you let it dry off for approx. 30 mins before putting it back in.So if you are having similar issues, I would fully recommend trying this first before going down a potentially far more expensive route.

I’m satisfied thank you

The quantity is too low in the can. I used only twice and its empty halfway through. I used to use CRC air sensor clean pro and it was well worked. Never had any problem with that. I will go back to CRC if I need to buy again the same product rather than this.

I was not sure if I should buy this or the CRC product. Went for the Liqui Moly and am delighted with the purchase.I have a twin turbo diesel BMW with 125k miles on it with its original MAF. The car ran OK, but when I used the kickdown on the auto gearbox it felt like I had been rear ended, very jerky. I also had an error where the engine electronics would not allow the aircon to start. Anyway, I had the gearbox oil and filter changed, the car smoke tested for leaks tobthe air intake system and the I level software updated in the car. The gearbox was much more silky after the oil change but the problems still remained. What to do.... After a lot of reading a discovered that the MAF sensor is used to calculate engine load, and the aircon fault is triggered by either gearbox oil or engine temperature being too high. I knew the gearbox oil and engine temperature were within spec, so thought I would have a go at cleaning the MAF sensor (as I did not want to replace it if it wasn't needed). Removed MAF sensor, sprayed the hot wire sensor a number of times left to dry for 30 mins and refitted. I then reset the MAF adaptations with the Rheingold software for BMW's and minis.To the naked eye the sensor looked clean, so I had no expectation this would make a difference.The result was amazing. Car pulled much stronger through the rev range, the gearbox kickdown issue has gone, economy is improved and the aircon fault seems to have gone. All these faults seem to have been caused by a contaminated MAF sensor. Suffice to say I am delighted!