Lakeside420

Hello all,

I am a brand new member here and I am hoping that maybe someone on this forum will be able to help me out with my 2001 W215 CL600.

I recently purchased the car non running and have not made much progress. The car will crank and the engine will spin but the car will not start. Fuel is getting to the rail and seems to have a decent amount of pressure. I have not checked the pressure with a gauge yet.

I removed the left bank coil pack from the vehicle, plugged it back in, then checked spark (plugging spark plug into coil then grounding it on a frame piece) and saw nothing. (I am not sure if this form of diag. is even useful in determining anything or not with this coil setup so please correct me if what i did was useless)
Being that the car was not seeming to fire on either bank, i replaced the voltage transformer. This did not solve the issue.

The car was scanned with an OBDII reader and no fault codes whatsoever were picked up by the device. We used this reader in the european car shop i used to work at so i am fully confident that it can read any type of fault code that my CL could throw.

The crankshaft and camshaft positioning sensors were both confirmed by the scan tool to be functioning.

I am wondering if anyone here would be able to give me a few tips on what to check next in order to resolve this issue? I would love to fix the vehicle but i am going to be moving soon so i need to either fix the car quick or sell it as is.


Thanks in advance.

tusabes

If you purchased it non running you can be sure the prior owner tried to get it running without success


Sell it . It's worth more parted out

biker349

do a quick scan with a star diagnosis machine. it should pinpoint the problem. obdII doesn't give much info on these cars. good luck. get it scanned with the proper equipment.

Lakeside420

I know i can't determine what he attempted to fix the car but i don't think he went very in depth with his diag. because of his situation of never being home as well as the fact that he didn't seem to own any types of tools. He had several domestic vehicle specialized mechanics tell him he would need a new fuel pump/fuel pump relay/timing chain/etc, and he decided to give up.

The scan tool i used on the car is worth about $5000 and it is used day in and day out on every type of european vehicle so i would assume it'd pick up any error that the car could throw. Is a star diag. machine something completely different or can it be safe to say that the issue causing the car not to start is hiding itself from the scan tool?

biker349

i believe star is specific only to mercedes. anything not specifically for mercedes probably won't pick up all codes, only generic codes. you need specific detailed mercedes codes. mercedes protect as much of their system as they can. do your self a favor and scan with a mercedes star diagnostic system. if you don't believe me fine, do what you want.

Lakeside420

I will take your word for it. I did not know that mercedes had the system controlled. Im going to take the car into the dealership on monday.

biker349

you can find an indy with star, or if you stick with it purchase a star system from china, or ebay. both will be cheaper than the dealer.

Lakeside420

I had the car scanned and it gave me a list of codes. None of them seemed to have anything to do with engine malfunction, however. I will list the codes below.

P0084
P0087
P0088

P1912

B1167-000
B1881
B1879-000
B1879-002
B1166-000

B1000
B1187

biker349

you need to erase the codes and start the engine and run for a while. then check the codes again to see if any come back. someone found a problem with the fuel pressure causing no start. sometimes i've heard that the camshaft and crankshaft sensors show good and are bad. don't know how to tell if this is true. good luck. also might check for vacuum leaks.

Lakeside420

I cannot start the engine as there is no spark.

I removed the tcu from the car and found that there was a decent amount of trans oil in it because of the faulty o ring on the connector. I was wondering if this oil could cause the tcu to fail and in turn act similar to a faulty crankshaft sensor?

biker349

i guess it's possible. usually the oil messes up the tranny shift points. drain the oil, clean up the tcu, replace the tranny connector and hopefully you'll be good to go inexpensively. no spark could be the ignition module. are you sure yours is good?

Lakeside420

I cleaned the tcu and the connectors and the vehicle still does not have spark. I purchased a second hand ignition module from a scrap yard, (voltage transformer) but it did not give me spark either. I'm not sure if it is functioning, I am just assuming it is because the guy at the place that sold it to me said it was. Is there any way to check the ignition module to see if it works correctly?

tusabes

Crank position sensor is the cheapest item to try next

Lakeside420

Crank sensor has already been replaced and has been verified to be functional by a star diag tool. I am wondering if the issue could be a bad ecu? I know that the radiator fan kicks on when the key is turned if the ecu is bad, (it does not in my car) but I was wondering if maybe the ecu could be bad and not turn the fan on? I'm wondering this because I didn't receive any fault codes from the engine when I had the car scanned. I realize that there should have been a code thrown if the ecu could not be communicated with, but I'm just trying to throw ideas out there in case there's a chance that the ecu could in fact be the problem.

biker349

from what i know the voltage tranformer is very hard to diagnose. i believe it shorts out and am not sure how to tell since it's an internal short. i had po300 codes and thought it was the coils. the tech checked the coils for shorts and then was in the process of checking the spark plugs when i explained the symptoms that i had. he replaced the voltage transformer and all was well. there are a lot more knowledgeable people on here than i am. maybe they can chime in. it seems to be electrical so voltage regulator, coil packs, electronic modules? that's about all i can tell you.

Lakeside420

I put a new voltage transformer in the car already. I'm not sure if it is good because it's used but it was from a well known salvage yard so I believe that the replacement part is good.

Jurgeenh

Did you figure out the problem? im in a similar situation.