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  #31  
Old 01-06-2005, 03:49 AM
ozzy's Avatar
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Quote:
3. The mechanic advised that the reading from the IFZ transfer to the ECU on my car was sufficient but a failing OVP Relay may cause intermittent ampere rate fluctuations from the alternator?
The Overvoltage protection relay has three functions;
1) Voltage supply to electrical components.
2) Safeguarding circuit of electrical components.
3) limiting overvoltages.
It certainly is possible that it could be causing your concern, maybe you could ask your mechanic to swap the one from there company c280 for trial?

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  #32  
Old 01-11-2005, 10:33 PM
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Thank you for you post Ozz,

It seems that the replacement of the OVP relay did not solve the problem at all. It happened again after the 2nd Day of the replacement.

At the moment, the dealer is ordering a new wiring harness from the factory in Germany as they say this is the last option.

I hope this CAN Bus wiring harness should do the trick; i was informed by the dealer that they are having similar complaints like mine in some countries in Asia too.

Going nuts by now!
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  #33  
Old 01-19-2005, 03:16 AM
ozzy's Avatar
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I hope it does fix your problem, I think I would be going nuts also!
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  #34  
Old 02-12-2005, 04:55 AM
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OZZY or Anyone............

Can you guys tell me what relay is this?
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Help! Occasional Starting Failures!-dscn2753b.jpg   Help! Occasional Starting Failures!-dscn2754b.jpg  
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  #35  
Old 02-12-2005, 09:27 AM
ozzy's Avatar
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That would be a picture of an Over Voltage protection Relay, so hows your car going??
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  #36  
Old 02-12-2005, 10:06 PM
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Man, I thought it was fixed for good.

An indie mechanic replaced the ovp relay on 22nd January 2005 and concluded that it would fix the problem but the d@mn thing happened again on 10th February 2005.

Does a failing alternator affect the IFZ transfer to the HFM?

I have an equipment (ref to the pic; have you seen this before?) to test the charging on the alternator. It seems that the alternator is not charging well because whenever I tried to switch on all electrical equipment (air con, lights, stereo etc) in my car.

Going nuts by now too!

Appreciate your comments.
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Help! Occasional Starting Failures!-dscn2752a.jpg  
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  #37  
Old 02-13-2005, 12:18 AM
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Location: Vancouver BC Canada
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Exclamation I have the SAME PROBLEM!

Hey guys, holy moly, I have the same Problem!!!! I have a 94 C220. My car's been doing the same funny stuff as "thegirlilove" has been. It first started 2 years ago, once every month or two my car's engine would turn, everything would be normal, except it wouldn't start. During this time, I have changed, my fuel pump, engine wire harness, done an early complete tune up, changed the car's battery and many other smaller repairs. However, my problem kept getting worse, and started to happen more and more often. It reached the point 6 months ago where it would do it a couple times a week. Each time the car's fine, it won't start, so if you go for a nice long walk, come back and it would fire up just fine. However in the last 2 months it has gotton real bad. It does it every third time I start my car. Its embarassing, you go shopping, come out, someones waiting to park in your spot and you sit there for 10-15 minutes to start your car, and slowly your lights start to dim from all the power you've used attemting a bunch of starts. I was still fine using my beloved benz with this condition. I've taken it to my mechanic many times, and they put it on the computer, and tell me it comes out clean, with no errors, and can't seem to figure out what's wrong. I've spent $4500 dollars trying to fix the problem and it keeps getting worse.

Currently this problem has reached an all time bad, so bad that my wife won't even touch it, and calls it a peice of sh%t every morning when she see's it. Now when your driving the car, say on the freeway going 120 Km/h or in town at 80km/h, it stalls on you, and your journey comes to an end. So when your stuck on the road, the car won't restart, you'll sit there for 5-10 minutes if your lucky, and sometimes 30-60 minutes, for it to restart. On top of that, my car has recently burned out a relay which I can't seem to find. Sometimes, my turn signals, emergancy lights, misfunctiong wipers, and rear defrost all stop working, or working in spurts. The last 15 times, my car has stalled on me, and refused to start, half the times, i havn't been able to put my emergancy lights on and I sit there on the road, and people have almost managed to smoke my car, and find away to cut through the freeway pushing the car in netural to the shoulder. I nolonger am able to safely use my mercedes. When I bought my Car, North Vancouver Mercedes in Canada, sales man, "LOREN FREEMAN" told me, my Mercedes was engineered to be the best car in the world, and not only that, Mercedes car's were designed to be the safest. Right now, I nolonger feel like any mercedes dealership should tell their customers that, my car is no longer safe to drive, let alone be in.

So if any of you guys can help me, I would be very thankful. I know when I ever have money again, which this benz hasn't let me save up, I will have a hard time convincing my wife to buy another as a family car. The problem with mercedes is, they have taken some simple idea's and made them overly sophisticated for practical use. A moter can work for 15-20 years, but if you allow a computer to control it, that computers life span is usually 10 years max. With the new line up of mercedes, if you buy one, I hope you pray everyday once its 10 years old.
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  #38  
Old 02-13-2005, 01:26 AM
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Quote:
Each time the car's fine, it won't start, so if you go for a nice long walk, come back and it would fire up just fine. Its embarassing, you go shopping, come out, someones waiting to park in your spot and you sit there for 10-15 minutes to start your car, and slowly your lights start to dim from all the power you've used attemting a bunch of starts. I was still fine using my beloved benz with this condition. I've taken it to my mechanic many times, and they put it on the computer, and tell me it comes out clean, with no errors, and can't seem to figure out what's wrong.
I sincerely feel your pain man!

Quote:
I've spent $4500 dollars trying to fix the problem and it keeps getting worse.
I have spent around US$ 3000 trying to source out my problem.

Quote:
Hey guys, holy moly, I have the same Problem!!!! I have a 94 C220. My car's been doing the same funny stuff as "thegirlilove" has been. It first started 2 years ago, once every month or two my car's engine would turn, everything would be normal, except it wouldn't start.
By the way trueog, did you installed anything on your car before these intermittent starting failures strated occuring?
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  #39  
Old 02-13-2005, 02:29 AM
ozzy's Avatar
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Quote:
Does a failing alternator affect the IFZ transfer to the HFM?
Basically the answer is no. The alternator has no bearing on car electrics. Its sole purpose is to charge the battery, unless of course it wasn't charging, and the battery was going flat, then it would have an indirect bearing on car electrics. At the other end of the scale if it was over charging, the over voltage protection relay would either shut down or blow the 10 amp fuse.

Has the engine wiring harness been replaced??.
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  #40  
Old 02-13-2005, 07:02 AM
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Quote:
Has the engine wiring harness been replaced
nope, i cannot afford to purchase the wiring harness (if the dealer get to solve this) I still doubt that would be the fault

I guess i am not alone with this problem at all..
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  #41  
Old 02-13-2005, 02:38 PM
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Location: Vancouver BC Canada
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Unhappy engine wire harness

The engine wire harness is very expensive, and they will charge you an arm and a leg for labor also. I was charged 8 hours diaognostic time, since it took them 2 days to figure out my problem, which they said was a engine wireharness falling apart. They ripped it out, showed me, and I was like, fine, its goning to cost me a fortune, but do it. The problem was never solved. I guess the brittle looking engine wire harness was still fine.

I use to have a sound system in my car, which I only kept in it for 4-5 months. Mechanic said, it might be sucking too much power, and causing the occasional problem. I took it out, and it never made a difference, and changed the battery.....i had a rockford fosgate amp (225.2), 2 - 12'' Rockford fosgate subs, 1 - 12'' phoenix gold sub, and two 10'' Pioneer subs, all of them in there at once, my whole trunk was occupied. Took it out, everythings sitting in the garage. But car's still working like crap.
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  #42  
Old 02-13-2005, 09:07 PM
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Quote:
I was charged 8 hours diaognostic time, since it took them 2 days to figure out my problem, which they said was a engine wireharness falling apart. They ripped it out, showed me, and I was like, fine, its goning to cost me a fortune, but do it. The problem was never solved.
Did you ask for a refund from these guys? (Obviously the MB Dealer right?)

The MB Dealer here charged me for new keys, car battery & IFZ COntrol module and there were no refund AT ALL!

A question for OZZY

Is the crankshaft position sensor located anywhere near the handbrake of a 1995 W202 C280?
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  #43  
Old 02-14-2005, 07:22 AM
ozzy's Avatar
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Quote:
Is the crankshaft position sensor located anywhere near the handbrake of a 1995 W202 C280?
Crankshaft position sensor is fitted at rear of eng just above starter motor.
Not near the handbrake.
Why do you ask??
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  #44  
Old 02-14-2005, 08:39 AM
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Quote:
Crankshaft position sensor is fitted at rear of eng just above starter motor.
Not near the handbrake.
Why do you ask??
Because I recalled that when the new ECU was installed by my the indie mechanic last year, i remembered them telling me that my handbrake needs to be realigned/ fixed and that when I drove the car,the handbrake warning light kept showing eventhough I had already released it before driving. Now why would they asked me to fix my handbrake when it was fine before they installed the ECU/ HFM in my car?

So i was just wondering if these guys did do something to the any areas or in the CAN area that could have led to affect my handbrake being loose as well as leading to a sensitive part of the ECU/HFM's connection?

I would appreciate if you could furnish any HFM related modules/ parts that are located near or around the handbrake area?

Thanking you in advance

Last edited by thegirlilove; 02-15-2005 at 05:08 AM.
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  #45  
Old 02-17-2005, 03:00 AM
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A little help Ozzy?

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