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Fault Code on My Engine Management

PhilWainwright

New Member
Joined
May 17, 2014
Messages
19
Location
Dewsbury
Car
CLK 200 Kompressor
Hello all, I wonder if you could help me with a slight problem.

I have a fault on my engine.... One that only appeared after I had another fault sorted out. Why not take the car back to the mechanic I hear you ask.... Because he was a complete cowboy who damaged my car's bodywork, charged me for all the parts I had supplied and many other things :devil: (£980 worth of 'work' and an MOT that is not worth the paper it is printed on, I could really rant about the cowboy, but will spare you the diatribe). I had just got out of hospital at the time, so I was not really up for the arguments.... Coupled with the fact I think he has blocked my number as I cannot call him anymore.

Anyhow, The fault.... My diagnostics unit (Autocom CDP+) shows the fault as shown in the attached screenshot. Another garage is saying it is just an Intake Air Sensor failure , as diagnosed with a SnapOn diagnostics unit.

Just to check if it is my software, I have just downloaded the Wurth WOW package including the Mercedes library. That cannot diagnose my engine at all (System Not Responded)

So, to check if it is the air intake sensor, I plan on throwing my multimeter at it tomorrow. I am not sure if it is a thermocouple where I need to read voltage, or if it is a thermistor that needs me to measure resistance.....

Could someone please advise me on this...... :dk:

(the CAN Module fault is a dirty contact... so please ignore that one. I just need to work out how to take the steering column cover off to correct that one) That fault maybe tomorrow, but could be next weekend's job....
 

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Iat / maf

:thumb: First of all, thank you very much for your reply and your link.

However, the link seems primarily to cover the MAF. I have copied a section as shown below.....

No CEL . . but the car was not running as it should. As you read the 'contamination' was due to silicone . . .AND . . K&N oil and both were coating the IAT sensor.

I will be interested in your readings from the new MAF. Look forward to your posting of the measurements esp the ignition on . . of "1.00V +/- 0.02".


As you can see from above, the IAT seems to be a separate issue to the MAF. (I replaced my MAF last year) I am wondering if anyone knows how to test the IAT ?

I look forward to any help that can be given.

Thank you all.
 
A 271 engine?

Check breather pipes for splits. Loads of info on here about it.
 

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