hello all, 95/ c220 . I am losing power sometimes with this car. I have checked the spark plugs and filters but didn t have any luck. do you guys have any ideas why that happens? the car runs fine except that problem. thanks

 

try cleaning the injectors....dat worked for me...

 

Define "losing power"
do u mean as in you have to put your hazard lights on and pull over, or you just dont think it is running as good as normal ?
also any check engine light?

 

the car goes dead. I have to pull over put my hazards on and restart again then it runs fine for a while.no check engine light is on. I am the 2nd owner and I am not sure if the air mes sensor ever changed. thanks

 

I would check the Mass Air then I would check the O2 sensor(s).When was the last time the fuel filter was changed ?

 

I agree too. That sounds exactly right...in that order too.

 

I don t know when the fuel filter was changed but I will go ahead and change that. air mass and O2s must cost a lot. how do I check if they are working properly without changing them? 95/c220/127,000 miles. thanks

 

Normally you will get the dreaded "CEL - Check Engine Light" when the Mass Air Flow sensor goes followed by very poor performance. The O2 sensor clues will be decreasing gas mileage and performance ( duh! ).I would change out the fuel filter 1st , then go to your local Pep Boys,AutoZone etc. and pick-up
a bottle of RedLine ( my preference ) Fuel System Treatment and add that to your gas tank.If its the fuel filter - you'll know right away , the fuel treatment may take some mileage to restore the performance.If its still running the same with no "CEL" I would take it in and have someone take a look.Let us know how you make out. Good Luck !