MY 2004 E55 CHECK ENGINE LIGHT CAME ON I HAD MY TECH CHECK IT HE SAID THE SECONDARY AIR PUMP MITE HAVE TO BE REPLACED IS THERE ANY OTHER WAY TO PIN POINT THE PROBLEM BEFORE I GO AHEAD AND DISH OUT $400-$500 FOR A PUMP AND ITS NOT THE PROBLEM IF ANYONE CAN HELP OUT WITH SOME INFO I WOULD GREATLY APPRECIATE IT THANKS HOPE TO HERE FROM SOMEBODY!!!!!!!!!!!

 

STARS diagnostic check for any error or maybe a obdII port scan for CEL check engine light for any codes. This is the only way to tell what could be wrong. I don't know about any secondary air pumps but i am new to this car. Good luck

also what symptoms are you having. Does car run? Give more details.

 

its the pump...listen to your mechanic

 

The pump is on the front left under the headlight. take the forward service apron off... You will be able to pull off the pump's power connector and there will be two round connector contacts on the pump. Get a battery and jumper these two little posts and the thing should make a whirring noise very similar to a hair dryer-quite loud.

This will tell you whether pump is bad or possibly something in the circuit upstream is bad(fuse and relay are common probs). I have also read that the one way check valve going into exhaust to feed the cats can get junked up and cause it to throw codes as well. Code is a P0410.

 

without it nobody is going to be able to give you a better idea of what is wrong.
Or what action to take.
Fuse could be blown,check valve could be plugged,pump could be bad.
Shop might be pulling the wool over your eyes
Shop could be guessing when ever they say something might need to be replaced means they haven't a clue if that will fix the problem and they are using your wallet to toss parts at the unknown solution.





"GOT CODES?"

 

Thanks for for the quick reply's we checked the valve and we jumped the pump they both work so it has to be the fuse or the relay I hope! I wil post the conclusion of this problem

 

Connect the car to star das and it will tell you exactly what's wrong