So I bought a 2003 S55 AMG 2 weeks ago the car is at low miles 67k and was taken really good care of by an older gentleman the bottom is bone dry but this weekend I took it out for a ride I hit 120 then slowed down to 60 I wanted to go again but as I pressed the accelerator pedal it was as if the car wasn’t going and and had zero hp this happens on the second or third pull the transmission shifts perfectly fine everything works does anyone know what the problem can be thank you

 

If the super charger intercooler pump has failed (not uncommon) the intake air gets too hot without the intercooler doing its job so the ECU pulls timing to protect the engine. Performance goes flat on its face. This is one of many possibilities that could be contributing to your issue.

 

OP, do you have a decent code reader? I'd start there. Even if you don't have a check engine light, you may see clues in the stored codes. Read the codes (and download them if you can) and there may be clues there.

Don't erase any codes until you download them all for review.

My guess will be heat soak. I had this happen to me last summer during some "spirited driving" with a BMW on the interstate. The first two pulls were strong and the third was a dud. No boost from the supercharger. Things went back to normal when everything cooled off.

Does your car behave normally when things cool off?

 

Some good info here: https://blog.fcpeuro.com/the-definit...amg-m113k-cool

But, @machild already told us that 😄

 

I checked for codes nothing I’m %100 sure it’s the ic pump it has some corrosion around it I ordered a stage 3 cooling system from vrp if you don’t mind can you walk me through on how to install the secondary heat exchange on what hoses go through the driver and passenger side and also is it possible to do without removing the trans cooler I appreciate it thank you

 

Doesn't the VRP kit come with instructions?

 

Most likely it's the intercooler pump. I had this problem when I first purchased my E55. It would only happen every few pulls, then it started happening after every pull. I didn't have a good scanner at the time to verify it, but I just replaced the IC pump with the upgraded Bosch one just since it's a known issue and for peace of mind, and it fixed the issue right away. On a lift it's not that hard at all, it took my mechanic about 15 minutes, but he has done a bunch of them before too.

 

Also an easy jobbo on axle stands or ramps (like I did), just have 2 clamps to minimize coolant loss and you are ok.