Loss of power when hot

HWC

MEMBER
2001 OPEL CORSA
1.6L
4 CYL
MANUAL
80,000 MILES

The car start & idle normally without any problem. After approx, 2 km the car looses power, and you battle to go uphill, even in 1st gear and sometimes backfire.
It seems it looses power at operating temperature It still idle normally, but no power. When the car is cold it will drive normally again for a short while.
Please help! Thanking you in advance.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

There are a number of things that can cause low power issues so let's start with running through these guides and check the basics that it covers.

https://www.2carpros.com/articles/symptoms-of-low-engine-power

https://youtu.be/U1RoG3I-Oww

Depending on what you find we can determine next steps but the fact that the engine seems to run properly at the beginning but poorly after it warms up, points to o2 sensors issues.

So, what I would suggest is we test the sensors.

Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor

We don't have a manual on this vehicle as it is not offered in the USA, but the operation is the same.

The o2 sensors are not used for adjustments until it warms up so if they are giving false information then it will cause the engine to run poorly once it is warm and the ECM starts to make adjustments based on o2 sensor data.

Please run through this info and let us know what you find. Thanks