Just wanted to check out with everyone about their experience after the typical failure of the Seconday Air Injection Pump inthe C32. After researching older posts, I found out some people had the controller module replaced with the Air Injection Pump also. I just had the Air Injection pump replaced but not the module.

I know this is a typical problem with this car, so my question is:

Who has had this pump replaced but not the module and experienced no further problems.

or

Who has had this pump replaced, continued to have problems and had to eventually replace the damn module also.

Your opinions would be greatly appreciated.

Thanks

Torerito

 

I had both Pump and module replaced. No problem so far.

 

I had my pump replaced twice, until the dealer realized that the problem was with the control module. Finally had the pump and control module replaced the third time.

 

A little over a month ago I had the air pump replaced in my car when it continued to run after the car was off. I had to disconnect it to get it to stop.

A month later it did the same thing. They replaced the pump again and said that a relay switch was stuck open so they replaced the switch.

It has only been about a week or so since then so we'll see if it dies on me again. If so, I'll tell them to check the module and replace that as well.

 

how do you know if the air pump is damaged?

 

I got the check engine light...thats all i could notice....also a wierd smell when I accelerated, but not sure if it was due to the pump failure

 

Yup, I had the pump replaced, and then about 2 weeks later (CE light on again) replaced the module.

 

Mine stayed on when I turned off the car. The first time it did it, I thought there was a cesna airplane flying right above my car. I popped the hood, and it smelled like it was burning. It didn't turn off for about 15 mins after I turned off the car so I disconnected it.

 

Mine is currently in the shop waiting the pump to be brought in. I will make sure that they replace the module as well. What other symptoms other than CE light were there?

 

I could not find any other symptoms other than my air pump spinning like crazy when the car was turned off. I guess until it died.

 

i got a check engine light the other night.

dealer replaced both the airpump and module.

 

When the relay fails it will usually kill the pump, and it does it quickly. It is actually the relay's fault. The relay overdrives the pump, and it can't handle continuous use for very long.

Dealers like to be pig-headed and replace them both after the pump had been murdered.

I believe that the original relay design has been fixed and the newer model is more robust.

The relay is about $15 and the pump is $150, dealers are not too clever on this one, maybe they like to inconvenience the customer and make a few $.

If mine hadn't already been done I would pay the $ out of pocket and replace it myself. 2 minutes and $15.

 

Both, twice.

 

never had this problem

 

i had the problem too... replace the pump.

 

I had this problem, I didnt know it was covered under warranty so I bought a new pump and relay.... When I have my car service I'm gonna put the old pump back to have them replace it.

 

Trekman - Does the relay look like a different part than the original. Trying to find out if MB has improved the relay or it is the same one that is going to fail again after so many miles.

 

same maker I think its made by tyco... if you replace the pump I would replace the relay the same time.

 

only once so far. Thought it was going to blow up and catch fire with all that noise going on. Just unplugged it and had it replaced. Lasted 25,000 miles.

 

this is EXACTLY what happened to mine about 3 weeks ago, had module and pump replaced.....