1994 S350 turbo not working after 2-3 minutes after starting engine,seems catalytic..
 

Two to three minutes,or better said,two to three accelerations after turning the engine on the turbo doesnt work anymore. If I turn the engine off and on again the turbo works for the same length of time. The mechanic thinks the catalytic converter is clogged. He told me that i can remove it completley and that wont cause trouble (other than the increased emmission of gases) and in return it will add horsepower and it will run cooler.Is this true and since now the engine produces 148 hp how many HP should it get after removing the catalytic converter?

Today I had the cat removed.
I didn't any gain in acceleration.
What I noticed is that the auto transmission would shift at 2400 rpm, and while the catalytic converter was in place it shifted gears at 2000 rpm.
I have yet to check if there's any gain in HP. My S350 does 130 KPH at 3000 rpm, so if it does more at that rpm, that will be fine.

Anything else that I need to expect from the removal?!

Catalytic converter on a diesel???

The computer is detecting a problem with the boost pressure or EGR valve and is cutting off the boost. Have the car scanned.

What did you remove? Diesels don't have cats.

Thanks turbodiesel.
So from what you say I understand the removal of the cat should give extra power and torque.
Just drove the car 10 minutes ago and noticed that I reached 130 kph(81mph) at 2900 rpm, and before it reached 130 kph at exactly 3000 rpm.
But didnt noticed a improvement in acceleration.

By the way how's your "tank" i.e. E300TD ?

Sorry rdanz, we wrote the posts at the same time so I didnt read yours.
Well I'm not to sure it a cat but its the first one (exhaust tank) where the gases from the engine pass through, on my car there are two others(left now).

There's an oxidizer catalyst that looks like a catalytic converter. When MB did the trap oxidizer recall they fitted an oxidizer catalyst downstream of the turbo. I don't know what cars with traps have in that location.

Sixto
95 S420
87 300SDL

My car is great, thanks for asking. I know where you're coming from - my car had the same issue. Turned out to be a bad electrical connection on the wastegate vacuum actuator. The computer would detect a problem and shut down boost completely. Let us know what you find out.

no cat(oxidation catalyst)on this model.
 

hi, theres no cat(oxidation catalyst) on your model only 85-87 calif. and 94-99 e-class. what did you remove? can you explain it? thanks

Here's the picture of what I removed.
There are two others mufflers that come after this one, so this one is the first one where the exhaust gases pass through rigt after coming out of the engine.

On the part you see on the photo the following is written:

k1
0027 1404904814

eberspacher
112314024

I think that by straightpiping the exaust where this part is attached I defenitely got more hp (now doing 130 kph at 2900 rpm, before at 3000), lost torque (acceleration not as it was before) and now the tranny shifts at 2400 rpm instead on 2000 as it did prior(but only when I floor it, otherwise still shifts at 2000.prior to the removal regardless whether I was accelerating slowly or flooring it it would shift at 2000)

Just a reminder I live in Europe and this is a European model.

turbodiesel as far as checking the electrical connection on the wastegate vacuum actuator I plan to check that tomorow.

thanks

Sorry, I didn't realize you were in Europe. It looks like a cat or muffler resinator. Taking it out can free up your exhaust flow. Those things can load up with a lot of soot and then they aren't effective anymore. Your wastegate on your turbo is computer controlled - might have something to do with your problem if it's not operating correctly. Do you have an electrical connection that you can check? Also, double check your fluid level in your transmission.

Electrical connection-by this you mean check it on the diagnostic computer, right?

If what I removed is the cat what should happen theoretically as far as power, torque and consupmtion?!
Cant seem to find answers to this question, or I haven't searched enough.

I'm thinking to get me a 01 E class , E200 Kompressor, 163 hp, with a chip that can go to at least 190 hp, and the guys at the shop say the only time they see this model at their shop is for regular servicing, other than that they never heard that this model causes any trouble(neither did the E200, same engine but no compressor, introduced in 96 in Europe)

Thanks