PBenz32

Hey everyone, I am having an issue with my 03' c32 hesitating. When I floor it the car will go and then I try it again and most of the time it just slowly accelerates. It feels like the supercharger isn't there sometimes. I am taking it to the dealer tomorrow but I have a feeling they will tell me nothing is wrong. Has anyone else had similar issues, I did do a search but didn't find the same exact problems.
Thanks PETE

Bif powell

Apologies if this is an obvious question, but everyone is at a different level in their MB AMG knowledge. Are you sure you're not hitting the ESP? All of these will do the exact thing you describe. Try disabling the ESP - the switch on your dash will do it to a degree - at least enough to see if you're hitting the lurch in the same spot every time. Also try it with ESP completely disabled (Dyno/Diag mode procedure using the instrument cluster controls, or by removing the ESP/ABS fuse I think someone suggested?)

That said, there are power-loss issues with these cars related to MAF sensor and various anecdots relating to other causes.

KEY08

I never did solve my hesitation issue related to the very very sensitive ESP setup in this car and quite frankly that is the one issue that determined for me I was turning it in at lease end. It's insane and dangerous and I almost bought the farm on several occasions where it decided to "cut-out" at just the wrong time. Whenever someone else got behind the wheel in my car I warned them to be very careful of this issue. Pushing the ESP button did little and I would never feel comfortable defeating the ESP system altogether.

PBenz32

I did turn the esp off and it still hesitates. I didn't completely disable it just used the button. I don't think it has anything to do with the esp because the light would come on if it were kicking in and when it hesitates it just accelerates much slower thasn normal. From a stop it won't really hesitate that much it happens when I am going lets say 30mph and then punch it. It sucks, I couldn't even pass a ford explorer yesterday because it was lagging. When its hestating it feels as if the engine has overrevved and is trying to catch up or something. Another awkward thing is when the engine is cold the car is a rocket but after 5 min. of driving it lags.

KEY08

Doesn't sound like an ESP issue and it doesn't sound good...Get it into the shop.

PBenz32

My dealer just told me there were no error codes. I also told them I am averaging like 14-15 miles per gallon and they told me there is nothing wrong?
I told them I will take them for a test drive next time cause when I pick it up tonight the mecanics will be gone.

KEY08

What's wrong with 15 miles/gal. this time of year? City driving? I never did much better than that.

polar240

I test drove a 03 C32 and in the 5 minute drive I experienced the same thing. Felt like a rocket in the first few minutes. Pulled hard from a stop but lagged like a mother from a roll. I walked from the deal....

Vadim-SoCal

Intercooler pump. Do a search, there is a lot of info on 55 boards with regard to it.

IdriveFast

i think this has to do more with the transmission than anything engine related. If this happens after you were on the gas hard, then slowing down to make a turn or something, then it is normal.

to solve the problem, simply manually select the gear before you slow down or even after you slow down. there should be little to no hesitation

TopGun32

i have this problem, after being in bumper to bumper traffic for 1 hour +

at times if turn right or left, and a I ease on the gas, the trasmission will not kick down.

As soon as I manual select the gear, the power is back on.

If it was the blower being too hot, it would completely shut off for minutes. This has happened to some of the 55k members.

Ever since I got a new trasmission and torque converter, it has improved but it still shows up at times... not always but at least once a week.

When it does appear, I hit WOT a few times, to let the transmission know that I'm being aggressive. After that, the car behaves a bit more responsive.

This only happens during turning.. and never at a light or stop.

FrankW

I think my transmission if fuked or at least the 4th gear is.

Flooring it all the way in 3rd and when it shifts into 4th there's a sudden jerk (or I should say slow *** shift) and then lost of power. If feels like I'm driving a 240 (no offense) at 110mph struggling to keep going. 1st, 2nd, 3rd are fine however.

Thank god I have the power-tran extended warranty...

ultraseven

I have an 04 and it comes up from time to time. Usually I will be coasting 50-60, and then punch the pedal. The engine just revs but it feels like it was zapped. From a standstill the car never has this problem.

I believe another thread suggested it could be related to glycol contamination in the transmission. Any further word on this?

PBenz32

I tried manually downshifting and it still lags, My dealer told me they didn't find any error codes so they assume everything is working fine. I need to take them for a test drive and then they will will see something is wrong.

KRob3

Add me to the list of victims - I just began experiencing this same problem. It really sucked because I was trying to pass someone on the freeway and the car didnt move!

If no one got a firm answer from the dealer, i'm not sure its worth me taking my car in (but I will anyways). I'll post what they say next week after I get it back.

newton22

Well, okay, I don't have a C32 nor do I have a supercharger but my car is suffering from almost the exact symptoms you described.

It punches hard from a standstill, the front would jump when I kick it down from 0. But from a roll, its awful. And I'm comparing its power to the power it had months back. I remembered it felt much better.

If this has something to do with the transmission, well then, you C32 guys are probably not alone.

PBenz32

Well the third time I took my car in I took a technician for a spin and I could barely pass a sebring on the highway. He knew something was wrong and admitted there was a problem. So finally they fixed it it was a bad air pump and the fuse was blown also. I believe its the same as the intercooler pump. So now my car does not hesitate one bit, its like a different car. I also printed out threads from this forum on the intercooler pump going and they appreciated all the help I gave them to finally fix the beast.
Good Luck

KRob3

Good to hear you got the problem fixed. Now I will have some ammunition when i take my car in next week.

TopGun32

can you tells us if they were able to get a computer code of the bad intercooler pump and fuse?

or it was something that the tech diagnosed?

my car is running really strong, but at times it does hesitate a bit. I'm wondering if I should just replace the IC pump to have better performance?

Vadim- If you read this post? Do you know who makes a better IC pump for our cars?

PBenz32

The dealer told me it didn't shoot any error codes that is why they thought there was nothing wrong. I don't see how a blown fuse wouldn't cause an error in the computer

KRob3

Great info guys. I'm taking my car in today and I feel much better about telling them what the problem is now that you have shared your experiences.

I will post the dealer verdict when I get the car back. I'm guessing they will need to keep it until at least Monday if they agree that the intercooler pump needs to be replaced.

Trekman

anyone has the Part # on the intercooler pump?

TopGun32

ditto on the request for the IC pump..

FrankW

coolant pump part number 000-500-03-86

KRob3

Got my car back today. They said the coolant circulation pump was faulty. Is that the same as an Intercooler pump?

Has anyone still experienced this problem after their pump has been replaced? I'm curious if its a one shot deal or if it will be a problem for the life of the car?

Thanks,
Kevin