Hi guys, i just recently purchased an 02 C230 Kompressor, it has aftermarket air/fuel mixture and psi meters, i took this car to air care and it passed with no problems. next day i noticed the engine light has turned on and the PSI meter has stopped functioning and the fuel economy has gone up approximatly 2L/100km...i have a scedualed appointment with MB dealership, wondering if anyone knows what it could be and how much im looking at to fix it? ( not under warrenty). thanks for the input guys.
02 C230 Komp. Engine light/psi meter
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My guess is the vacuum line connection for the boost meter came loose. That would explain the meter going dead, and what sounds like a vacuum leak... I would look for the connection on the intake tubing. It's probably up by the throttle body. You can also get the code read at Autozone for free.
I dont think we have autozone in Canada. Also, how would i check for a vacuum leak, i found the spot were the sensor or what ever it is goes in, but i dont know how to check for what you said. sorry, im a bit of a noob. if ther is a leak, would that also explain the engine light? and what could have caused it? high RPMS?
i followed it and this is were I can no longer see it, it goes down on the left side of the engine i took some picture, also i saw that a hose connected from the filter system on the left of the engine to the engine has a peice broken, and i thought perhaps its sucking air in from there, i covered the hole with some putty but the psi meter still is not functioning.
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That's actually the supercharger manifold breather hose. Looks like whoever owned the vehicle before you disconnected it, and covered the connection point with sealant. Not related to the boost guage, and not sure why it was done. That could be the cause of your CEL, but you really should get it scanned to see what codes are thrown. Reason being is that I'm only guessing here. I decided the boost guage connection would be the first place to look considering the guage stopped working at the same time the CEL came up. Boost guage connection should be somewhere on the intake piping. The big black plastic tubing on the driver side of engine. If it came off you could have an opening on the intake. Not a good thing on any vehicle, especially forced induction. Could be loosing boost, and that would throw CEL...
so there should be a hose connected to that? the only other hose that i see that might have been there before is that hose that is now connected to the white hose in image 0438. that white hose is connected to the boost meter, and i dont see any holes in the intake piping on the driver side of the engine. any clues? i got an appointment for mercedes to run the diagnoses, or should i just take it any were for the scan?
Interesting... In my opinion that is a terrible place to connect the boost sensor. What the previous owner did is delete the breather, and turned it into the sensors connection point. What I would do is either get rid of the boost guage completely, or move it to a new location. Such as on the intake piping right next to the MAFS. I do believe someone stating there is an existing connection point already on the intake somewhere. Just pull that white hose out of the tubing. Take that sealant off the small angled black crankcase breather hose, and reconnect the breather. Most importantly though... Get the car scanned with an OBD-II reader, and see what the code is.
By the way, you might need to replace the supercharger breather hose if it was modified to fit the boost sensor. Same goes for the crankcase breather hose if you can't remove that sealant. Shouldn't cost you anymore than $15 dollars for both, and takes about thirty minutes to replace. The hard one to get to is obviously the supercharger breather. You just remove the black intake box to get there. Simple enough...
By the way, you might need to replace the supercharger breather hose if it was modified to fit the boost sensor. Same goes for the crankcase breather hose if you can't remove that sealant. Shouldn't cost you anymore than $15 dollars for both, and takes about thirty minutes to replace. The hard one to get to is obviously the supercharger breather. You just remove the black intake box to get there. Simple enough...
alright, sounds like the smartest thing to do. thanks for the input and ya ill defenetly get the code checked. i got an appointment with MB on the 30th.
just out of intrest, what does the breather do? like what would change if i connected that as it originally was?
just out of intrest, what does the breather do? like what would change if i connected that as it originally was?
To be honest I don't think anyone has a specific answer on exactly why they placed a breather hose on the supercharger manifold. I know there was some debate a while back about why it's there. I think it's there to vent excess pressure after the supercharger is engaged, and then bypassed again. Without it there might by a slight pressure blow off sound... By the way, don't have the dealership do this work. It's very simple, and you will save at least $100 dollars by doing it yourself.
ya i do currently hear a blow off sound similar to a turbo blow off, obv. not as loud when in between shifts on high rpms. so you suggest i just run the code at any mechanic and go at it my self? i can re connect these hoses my self, but what if thats not the reason for the light?
You can have the code scanned at the dealership, but it's definitely going to cost more than some other shop. There's certain specialty codes that the dealership can determine the exact cause, but for the most part any OBD-II scanner is going to pull at least the generic code. Yes, get it scanned, and if the code is related to something else we can probably help you out on this forum towards fixing the issue...
ok, so i got it scanned today, and after the guy reset the codes, the engine light went off and on the way to get the new breather, the PSI meter started working agian. and when i was coming back it stopped working agian.
Engine light hasnt reappeared yet, but here are the codes i got:
p0340 Camshaft Position Sensor
po410 Secondary air "anjtro" system
so at this point, i have reconnected the breather, i used a three way so the psi meter is still attached to that point too, but psi is still not working.
Engine light hasnt reappeared yet, but here are the codes i got:
p0340 Camshaft Position Sensor
po410 Secondary air "anjtro" system
so at this point, i have reconnected the breather, i used a three way so the psi meter is still attached to that point too, but psi is still not working.
The guage is probably unrelated to the codes. Just trash it, or get a new one. Connecting it to the breather might not work out either, so if you move it onto the intake by the MAFS you might have better luck. You can just attach it to the rubber coupler right after the MAF sensor. Then if you want to delete the boost guage it's less than a $10 dollar part. CPS is an easy DIY change, but if the code doesn't come back, you don't need to worry about it. CPS will cause very noticable ploblems when it goes... I'm not too sure about the "410", but it could have been the disconnected breather.
By the way, not sure if I asked already, but how many miles does your coupe have? You should fill out your profile, and make a signature!
By the way, not sure if I asked already, but how many miles does your coupe have? You should fill out your profile, and make a signature!
my coupe has 100Km's so about 60,000 miles. the code i think was p0410 sorry not po410.
now what did you mean when you said if i want to delete the boost gauge its less than a $10 part?
Also today, i drove my car and the light was off then i gave it some speed, got it up to like 5000rpm, and the engine light came on agian.
what could that mean? is it the CPS?
now what did you mean when you said if i want to delete the boost gauge its less than a $10 part?
Also today, i drove my car and the light was off then i gave it some speed, got it up to like 5000rpm, and the engine light came on agian.
what could that mean? is it the CPS?
No, I was saying you can move the boost guage connection over to the intake tubing. There is a rubber coupler right after the mass air flow sensor. You can just drill a hole in it, and if you decide eventually to remove the boost guage it's only a $10 part (the coupler) to replace...
Probably is the CPS. To be sure have it scanned one more time, and if so change out the CPS... It's an easy job.
Probably is the CPS. To be sure have it scanned one more time, and if so change out the CPS... It's an easy job.
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so i recently took it to the previous owner and he scanned it agian for me, and this time only one the one code came up p0410, not the CPS one. and he told me its a check value, and i changed that. so far the check engine light hasnt come on...
I had another question, when i bought this car from him, i had a message from the computer malfunctions: Transfer Case, Visit the dealer "HIGH/LOW", he told me its because he switched out the original deck and put in the dvd-player.
Also today i disconnected the battery and connected it agian, and i got a malfunction saying: ESP not available. what should i do? do i have to take it to mercedes?
I had another question, when i bought this car from him, i had a message from the computer malfunctions: Transfer Case, Visit the dealer "HIGH/LOW", he told me its because he switched out the original deck and put in the dvd-player.
Also today i disconnected the battery and connected it agian, and i got a malfunction saying: ESP not available. what should i do? do i have to take it to mercedes?
To reset the ESP you first start the engine, and then turn the steering wheel lock to lock. After that shut down completely, and restart. The ESP will be reset. So that "410" was a check valve? Where was it located? By the way, I was interested in knowing if repairing the manifold breather got rid of the blow off valve type sound?
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