I have a 2002 c32 that keeps going into limp mode,but no errors come up.
Any suggestions or answers

 

Gonna need to provide more info than that to get any real help.

 

Every now and then the car just loses all power,it will still drive ,but with limited power.
If I swtch off and start up again it will go properly again.I"ve been told that it might be some sensor on the transmission,but that is expensive,so I am hoping it could be something else.When it does happen there are no malfunctions coming up.

 

I.C pump could be on the way out?

 

+1 for the intercooler pump. From what people describe it feels like you are hardly accelerating at all, very slowly increasing in speed a km/hr at a time.

 

Right time to knock Mr. Jonson's door)

 

Are you sure it's actually in limp mode? Are you able to take the vehicle up to fairly high speeds?

My Pump went out and the loss of power was quite dramatic. The car would accelerate, lots of noise but not much go. Once I changed over to the Johnson Pump (which is actually quite an easy job) all was golden and power was restored.

"Every now and again" tells me that the SC might be going into protective mode once a certain temperature has been reached.

 

Can you downshift when it happens?

yes = ic pump

no = sensor in trans.. had it done too.

 

I think I have the same problem. I currently drive a 02 C32 with about 125k miles on it. Moving back from ny to la my older brother gave me the car which was very nice of him. However, this car has been giving me quite a few problems. It's obviously not a new car but the within 4 months of driving, I could sense the transmission was slipping, overheating smell, and suspension was busted. After careful thought about trading it in and getting a new car, I decided to repair it. Due to a)the car I really want is kind of out of my budget right now and it wouldn't look right for me the drive it right now at my age and b)the c32 is still a beauty and has great performance when it's running well. Long story short, I just got my transmission on my C32 rebuilt along with the suspension which costed me quite a bit even if you consider its kbb value which im sure ill get lowballed if I try to trade it in or carmax it. Well, I got the car back yesterday and the transmission seems to be running ok and the suspension is great. However, the supercharger seems to be in limp mode. It's on sometimes and not on sometimes. Also, when it's on it makes a weird noise when it's accelerating but that noise is not there when the SC is "off". Can any of you guys give me any advice? My opinion is either
1. transmission not rebuilt right
2. SC not running right( from previous posts I read either the air cooler pump, faulty bearing, or MAP failure??)
3. transmission needs to be driven on for a bit
4. computer was reset so need to drive the car for another 75 miles??

I fixed the car with the intention of driving it at least for another 2 years but it would be so sad not to enjoy with the SC. Please help. Any suggestion would be greatly appreciated guys. First time posting so you guys definitely know more than me. Thanks a lot!

 

When it drops in power it takes time to get going and when it does if I push the accelerator(NOT ALL THE WAY) it will climb up to about the 6000rpm mark before changing up.
Will a diagnostics check give me the exact problem?
Thanks for all the prompt replies.

 

Sorry guys,but when it does this I can't get it higher than about 120kph

 

Just get under the right fender and check your IC pump.

 

It does sound to be your IC pump. I would pull the wheel and check the pump. Also when you're driving and trying to bring the car up to speed do you hear the Super Charger whine? If you don't, that's another indication it's the pump.

I honestly have a feeling this isn't your tranny though I can see why when driving you'd think that's what it was.

When my IC Pump went out I had no codes and no check engine light. Just a massive performance drop. When doing about 60-65, if I floored it the RPM's would jump extremely high, the car would have plenty of engine noise but no go at all. It felt as if all the power in the car had been removed. I'd even go so far as to say I felt like I was driving a large 4 cylinder vehicle.

 

Then your car isn't in limp mode. If it was, you wouldn't change gears at all. With all do respect, you need to park that car and check the IC pump

 

You need to go and get your codes read!
Just cause you don't get a CEL doesn't mean there won't be any codes when you pull them. That will lead you in the right direction.

 

What you guys say makes sense because I had an accident on that corner,and I think that is when it started.What do I look for when I see the pump,besides damage

 

unreal.

 

I don't think you are in limp mode. Limp mode will always trip an error message. Get your car scanned by STAR if you have no joy after replacing the IC pump. You will get used to this if you want to own a C32.

 

You may want to take your car into a professional. If you're not sure what you're doing, it's not worth messing around under the hood.

Other than obvious physical damage you'd need to remove the pump and hook it to a power source.

All the advice you need is in this thread. There also a number of DIY write ups explaining how to change your pump.

 

well this is very useful info, its been happening to me every time I go on track days, after 15 min of hard driving power will go out and the rev wont go pass 2k. I will check my IC pump

 

When my pump was on its way out it would rev as much as you applied: it was simply the power was lost. Maybe that's heat soak. (Isolate with bigger heat exchanger)