Hi everyone,
After several months (well to be honest, almost a year) of trying to fix this problem, i have not find any solution so is there anyone out there with similar problem who knows right answers.
This is the problem:
Car starts normally, engine power is OK, untill i drive for 1-2 Km, After this car start to lose and regain power. This happens in any gear and at almost any rpm's (well, usualy over 2000 i say). It looks like this it is accelereting untill certian rpm then stops accelerating and start slowing down, and this all hapens with constat position of accelerator. If i press in this moment accelerator a litlle bit it continues to accelerate and it jerk me arround like that thru all gears. Sometimes it is hard to accelerate even in the first gear.
So car was checked in several fiat repair shops and showed no failures. I have changed fuel filter, spark plugs, sparks, air filter, cleaned and checked all connectors, checked all el. groundings.
Then i noticed that if i disconnect Lambda sensor, the car start to work normally, accelerate normally and have full power all the time. So i tried with diferent lambda sensor but the problem remained.
While driving with disconnected lamba sensor everything works fine, and it is not lambda sensor problem since i have change l. sensor.
Also i checked all air pipes and all gaskets for possible leaks.
Since the car is working normally without l. sensor and when it is cold i have removed from my list of possible problems: fuel pump, injector, throtle valve sensor, and problems with electrical connections.
Things that i suspects are engine coolant temperature sensor, cat. converter.
Any other sugestions and ideas please. I have this problem for almost a year now. I drive without lamda sensor in the meanwhile.
Cheers...
After several months (well to be honest, almost a year) of trying to fix this problem, i have not find any solution so is there anyone out there with similar problem who knows right answers.
This is the problem:
Car starts normally, engine power is OK, untill i drive for 1-2 Km, After this car start to lose and regain power. This happens in any gear and at almost any rpm's (well, usualy over 2000 i say). It looks like this it is accelereting untill certian rpm then stops accelerating and start slowing down, and this all hapens with constat position of accelerator. If i press in this moment accelerator a litlle bit it continues to accelerate and it jerk me arround like that thru all gears. Sometimes it is hard to accelerate even in the first gear.
So car was checked in several fiat repair shops and showed no failures. I have changed fuel filter, spark plugs, sparks, air filter, cleaned and checked all connectors, checked all el. groundings.
Then i noticed that if i disconnect Lambda sensor, the car start to work normally, accelerate normally and have full power all the time. So i tried with diferent lambda sensor but the problem remained.
While driving with disconnected lamba sensor everything works fine, and it is not lambda sensor problem since i have change l. sensor.
Also i checked all air pipes and all gaskets for possible leaks.
Since the car is working normally without l. sensor and when it is cold i have removed from my list of possible problems: fuel pump, injector, throtle valve sensor, and problems with electrical connections.
Things that i suspects are engine coolant temperature sensor, cat. converter.
Any other sugestions and ideas please. I have this problem for almost a year now. I drive without lamda sensor in the meanwhile.
Cheers...