Losing power > 20 min driving...
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Newbie
Joined: Sep 2019
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2014 cla45
Losing power > 20 min driving...
Purchased a used (i know) 2014 cla45 with 52k miles on it. The car ran fine for a couple months but about 6 weeks ago threw a CEL code for underboost. After being in and out of my local shop (specializing in euro cars) the CEL has been fixed and seemed to be related to a faulty sensor. He checked my turbo at the time and replaced a cracked hose as well.
The car initially runs great for the first 15-20 minutes i drive it (which is usually my to and from home time ) but i took it on a longer drive today and noticed that it feels as though my turbo mode is out when the car has been warmed up and running >20 minutes. Initially, this is why i took my car to the mechanic in the first place because it acted this way but it would always throw the CEL. Now it seems to act the same way but not throw the CEL. The funny thing is that if the car engine cools down I will get back on it and drive it like nothing is even wrong.... car seems to be back with full power/turbo/torque etc.
WTF is going on?? Anyone have similar issues? I got rid of my BMW for a similar issue not too long ago.
The car initially runs great for the first 15-20 minutes i drive it (which is usually my to and from home time ) but i took it on a longer drive today and noticed that it feels as though my turbo mode is out when the car has been warmed up and running >20 minutes. Initially, this is why i took my car to the mechanic in the first place because it acted this way but it would always throw the CEL. Now it seems to act the same way but not throw the CEL. The funny thing is that if the car engine cools down I will get back on it and drive it like nothing is even wrong.... car seems to be back with full power/turbo/torque etc.
WTF is going on?? Anyone have similar issues? I got rid of my BMW for a similar issue not too long ago.
Newbie
Joined: Oct 2019
Posts: 1
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CLA45 AMG
Our cars have a "limp" mode to prevent the driver from screwing it up... my friend is a Mercedes mechanic and that is how he explained it.. this happened to me when I threw a low coolant sensor.. do you have ANY other errors? Coolant, Oil Change, etc... if this car throws a sensor it will go into "limp" mode.. once I added coolant the issue has never returned.
Thread Starter
Newbie
Joined: Sep 2019
Posts: 3
Likes: 0
2014 cla45
Our cars have a "limp" mode to prevent the driver from screwing it up... my friend is a Mercedes mechanic and that is how he explained it.. this happened to me when I threw a low coolant sensor.. do you have ANY other errors? Coolant, Oil Change, etc... if this car throws a sensor it will go into "limp" mode.. once I added coolant the issue has never returned.
