I had an original Crossfire coupe since 2004 and my wife traded it in for me for Father's day for a SRT-6 Convertible. I've never driven a supercharged engine before. I seem to be experiencing either driver error or some type of problem. Sometimes when I stomp on the gas at a light I have extremely sluggish acceleration. This happens sometimes at highway speeds too. I am depressing the gas pedal all the way down to engage the auto downshift button. Anyone else have this problem?

 

I had this same problem about 4 months ago and it was due the supercharger not engaging. Found out it was due to the supercharger clutch not engaging when I smashed on the gas.

On a side note I had to get a lawyer involved because they originally told me they could not fix the problem, and told me to take the car back until the chrysler mechanics figured out the problem. It was amazingly fixed within 4 days. Car was in the shop for 3 weeks.

Hope this is not your problem but could be. Good luck!

 

I experienced a similar problem. Turned out that the auxiliary water pump,
for the intercooler, needed to be replaced. This caused an over temp issue
for the supercharger, so it didn't engage.

Coyote

 

any chance the ESP is kicking in and killing the engine power until you have sufficient traction?

 

Procedure below works for my srt6...


Try this:
Throttle Body Adjustment. They say this works on all drive by wire vehicles and resets parameters WITHOUT Having to disconnect battery!


The Throttle is "Drive By Wire" and adapts to your particular driving
style. Do a TBA Throttle body adaptation.

1. Get in your car, it doesn't matter if you close the door or not.

2. Turn the key to the on (not start) position, the position just before the starter
turns over.

3. Press the gas pedal to the floor with the key in the "on" position.

4. Hold the pedal to the floor for five seconds, then turn the key back
to the "off" position (don't remove the key), then release the gas
pedal.

5. Wait 2 mins. for a full alignment.

6. Drive the car as you always do.

Depending on your driving style, this may or may not be a big factor. I do a lot of city driving so
I noticed a big change after erasing my history. It is not hard to do this, just follow the instructions -

Key on, pedal down, 5 sec, key off pedal up, wait 2 minutes.

Keep the key in for the entire thing.

If this doesn't work, disconnect your neg. battery cable for 20 minutes. This will re-set the parameters in the drive-by-wire...

 

Tried the reset and that didn't seem to have any effect. I guess I'll take it to the nearest dealer and have them drive with me.

 

I know what your talking about. My car has done it since I got it. I took it to the dealer on Monday and they found and Intake Temp sensor fault. They replaced it today but I haven't got a chance to see if it fixed it b/c its only been driven a couple of miles. It happens sporadically so its hard to guess when its going to happen. Does yours do it all the time or out of no where?

 

It happens sporadically. This morning I pressed all the way down on the gas pedal from a stoplight. I was rolling about 1-2 mph at the time and I got absolutely NO torque. I think a 4 cylinder chevy cavalier was in the lane next to me...bright yellow...laughing!
It went to Manassas Chrysler this afternoon. Let me know if your sensor fixed the problem.

 

I too have that problem at times. To me it seems more like an issue with the transmission not kicking down a gear when it should.

 

Interesting... what you said is exactly the reason for putting Chrysler on final notice under the Lemon Law!

This morning I dropped off my car at the dealer to have a real bonafide DC tech to work on my car in an attempt to remedy this very problem. They first replaced 3 parts that went from the gas pedal into the engine thinking this might fix the problem - did not work. They then found the sensor to be bad, so they replaced it - did not work. Then they realized my computer was bad so they replaced that - and well you can guess, none of that has fixed the problem.

Not sure what the answer may be, so I'm anxiously awaiting a call from the dealer letting me know the DC tech found the problem and fixed it. And I want that call to be with some good news...

When I find out what they did, this will be one of the first places I will post the info. I just find it amazing that so many are experiencing the same problem and they don't know how to fix it...

Sharon

 

Have you guys had the dealer techs look into what Coyote said here?
I've read about this being a common problem on the MB forums also.
When the supercharger gets to a certain temp that is too hot, it will not engage until it cools back down.
So say your sitting at a stop light, the supercharger heats up a little from lack of coolant flow, then you take off and there is no power due to the supercharger not working.
Then after driving down the road, wind blowing through the intercooler, cools off the supercharger just enough for it to work again.

 

I am still having the same problem after they replaced the sensor. It feels like the SC isn't coming on but it mainly happens at highway speeds. In town from a light it seems to not have the problem till you get up in speed. The tranny downshifts but it doesn't help at all. This is making the car very boring and dangerous to drive. I have more confidence in passing someone in my 4 cyl nissan pickup. Back to the dealership it goes.

 

Check out my new thread regarding your problem... I don't think you're going to like the answer I got today from the DC tech that was brought in specifically to look at my car due to a few occurring problems. I am not happy.

https://www.crossfireforum.org/forum...splay.php?f=54

 

Are you serious. They have a clutch on the supercharger?!! Wow, never heard of such a thing before, but it makes sense when it's not being used. I love all these cool techy things I keep discovering about the crossfires.

 

Same issue for me. My guys are looking into replacing the clutch in the supercharger and replacing the secondary intercooler. I'm waiting for the parts to come in.

 

The problems expressed regarding XFires in this forum parallel the problems experienced by SLK owners on the Mercedes Forum. The big difference is that they pay a whole lot more money for their problems.

One difference I have noticed is that the SLK owners gripe more about their paint and paint jobs than the XFire owners. Maybe that is a product of the Karmann factory paint process as opposed to a Mercedes factory paint process?

 

I have experienced all the problems posted on this thread with my car, and all of the parts have been replaced effectively. My dealer is in Plano, TX at Huffines, they had to get some help from the Mercedes Dealership next door, but also hire some techs there as well to look at problems that could not solve.

If your dealership is unable to solve the problems have them call Huffines to get an explanation of off to fix your problem correctly. I have noticed that once they have replaced many parts without fixing the problem they will give up, hence why I obtained a lawyer.

Huffines phone number is 972-867-6000.

Hope this helps, I too almost gave up on my car but once it's fixed you will know why you bought it!

 

The tech didn't find any codes on mine and didn't experience the problem on a test drive so the told me to come pick it up there is nothing they can do. I asked the tech to take a ride with me which he did and after driving around for 7 minutes it finally started its sluggish acceleration problem. The tech made some calls the next day and did some testing and now they are going to replace the IC pump.

My question is anyone who has had the IC pump replaced did you notice a big change in performance? If the pump is completely out and never running I would expect quite a big difference in the performance I have had. I'm hoping that it has been yanking out timing this whole time in all situations (part throttle and full) b/c of the pump and thats the cause of my disappointment, and that its been in the 90s and 100s since I've got it so the intake air is pretty hot. I have not been too impressed with this car as of yet, looking for some hope.

 

I had the exact same problem. It took two times of bringing in my xfire for the techs to finally figure out that it was indeed a faulty secondary pump. I haven't had poor acceleration since. The reason for the bad acceleration is because you're basically losing boost. When the water pump malfunctions, their is no flow to the intercooler which means the water in there is stagnant. This sitting water then heats up, which also heats up the intake charge going to the supercharger. Because the supercharger has a sensor to monitor intake temp, it will automatically disengage the supercharger via the pulley when the intake temp gets too high. This then means no boost. After my car was fixed, they told me that my intake temp went down almost 100 degrees!! Since then I've had even better acceleration (not a huge difference) and better mpg.

-Josh

 

Coony and others...
How many miles are on your SRT's when the problems started?
Im trying to get an idea of when to expect my pump to quit working too, because it seems there are a lot of people having this problem.
I also read on the MBWorld forums, that someone found a Ford part number for the same exact pump, which is also used in the Ford Lightning and its cheaper then the MB part.
I wonder if there is a TSB out for this yet? Sounds like there should be.