Hello all

I'm a new member in desperate need of your expert help

I have a 2001 S430 ME W220 body and i recently swap the engine with a 2003 S430. The 2003 S430 started prior the swap. Now i have the 2003 engine intalled into my 2001 body frame.

I changed the injectors, opened the air intake and have it cleaned. I put everything back together, the engine turn and would NOT start.What did i do wrong? What must i do to start the car now? Your help is desperately needed

 

Wow my friend, it could be a thousand things. However I'd start with the basics. Is it getting fuel? Are the plugs sparking? Start with fuel and electricity and go from there.

 

Check your crankshaft position sensor (CPS). The symptom for one that has failed is usually a crank but no starting.

 

Congrats on such a job; make sure you are using the original engine controller (EIS sensitive)

 

@olmeda I believe its getting fuel, cause when I press the pressure valve in the fuel line fuel gets out with lots of pressure. How can I check the sparking of the plugs.

 

iBeforreal.. CPS Would you know where is that located? can I replace it with a new one? I did not change anything. Still using the same wiring harness.

What I don't get is that before pulling the 03 engine out, it started fine, but once I installed on my 01 body frame it wouldn't start. Although as I explained earlier I opened the air intake and changed the injectors seals.

Should I swap all the sensor from the old engine to the 03 engine to sink with the engine controller.

 

Yes swap all the sensors

 

CPS is located here, but i dont think that is the problem.

 

The easiest way to check the ignition is with an inductive-pickup timing light. This is a light that flashes each time the pickup, snapped around a plug wire, sees a high-voltage surge. With such a light, you can check every cylinder in just a few moments, with no disassembly or disconnection required.

You don't tell us where you are, but over most of the USA, auto parts chain stores have tool loaner programs - some may have such timing lights.

 

To add:

Change all the harnesses and sensors from the old engine; that's the safest approach for compatibility; engine blocks are the same, but harnesses and sensors require detailed research on MB docs for every MY.

Good luck!~

 

@Wally I'm in Atlanta Georgia, i will check Autozone

@Kraut56 Talking about the Harness.. Two Engine and two different harness.
I removed the 03 engine from a 03 chassis without the harness. Install that engine into a 01 chassis. Reconnect the original 01 harness, ECU relay etc.. Now engine wont start.

Are you suggesting that i use the 03 harness into the 01 chassis.

This weekend, i will check the cranshaft sensor and all suggestions. Both the old 01 engine and 03 engine start prior pulling them out.

 

The fact that i opened the air intake clean it , change the fuel injectors seal. Would that be a reason for the engine not to start. What are my other options to try.

 

You need to switch out the entire harness, why would you do this without the new harness that came with the engine that doesn't make any sense.

 

@USAFguy Swap the harness is a pain in the butt..if requires to change lots of things, both fuse boxes, ECU, ignition key box and key at the steering column etc. Are all these really necessary?

 

NO; I meant to make sure you use the original harness and sensors of the car with the new block..

You should be able to check for sparks with a simple tool.

If the car battery stayed connected when you did the swap, the engine ECU may have to be reset with a DAS system.

 

Good afternoon all

Ok, i'm making progress. It was the CPS sensor, i was able to crank and start the engine. HOWEVER it will not accelerate. When push down on the gas pedal nothing happen, the engine is running poorly but wont accelerate, in fact when push down on the gas pedal the engine cut off.

Restart it again, push down on the pedal softly about 2 inches down and hold steady, few second later the engine accelerate poorly no pressure and cutoff.

What do i do now ?

 

Check throttle body function, that sounds like the connector is unplugged or the TB itself may be bad. Swap yours over from your old engine and re-check.

 

TB???? Where is that?

 

The "TB" = throttle body, is the electronic mechanism to regulate the throttle plate according to gas pedal commands via the ECU.

It is located right on top the aft of the engine behind the Mass Airflow Sensor.

You may need a DAS system to just reset accumulated (stored) faults.

Swapping engines without a DAS is an amphibious job.

Good Luck!

 

Because you're underwater ?



It's an ambitious job too

 

Yea!! (auto-correct feature can do that to you!)

 

Where can I find the DAS?
Would you know if the local auto parts rent them?
Or Must I buy one

 

No parts store rents DAS
You can buy a Chinese clone on eBay or other websites

 

lololol