amg guy

iTrader: (1)

I know this topic has been beat to death, but, last night driving up the 5 fwy from San Diego to costa mesa going by camp pendelton I legged it once up to 130mph and my S/C shut off. I could understand if I had been driving hard for a while but I was cruising about 80 up until that point. Outside temp was 60 degrees. WTF.... I drove it for few minutes and then it came back on.

Now I have done plenty of searches about replacing it the pump with a johnson pump, but my car is under warranty.

Have they made any changes in the stock pump to make it worthwhile to get a new one under warranty or it is just better to go and get a CM30.

The car is 100% stock.

chiromikey

use your warranty. the new oem pumps are not failure prone like the original.

E55AMGGG04

It has happened to me in 50 degrees weather. After only 1 hard pull in turned off at 145mph.

jmf003

+1. I have a warranty replacement pump and, as Mike wrote, it's vastly better.

amg guy

iTrader: (1)

Cool thanks, off to the dealer on monday to get a new pump.

efivefiveamg

Can someone please post the part # of the replacement pump?

It would make if much easier for those of who need to argue with our dealers...thanks!

amg guy

iTrader: (1)

When I get mine done on monday I'll get a part number for ya

QuadBenz

I believe the improved pumps part # is A000 500 03 86.

I'm not 100% sure, however.