Perinchery

The Check Engine Light of my C220 has come on. She has done a little over 1,00,000 miles...
I took to AAP and got a diagnostic done. It read "P0441 Evaporative Emission Control System Incorrect Purge Flow".
Can anybody help in diagnosing wots causing it...??
I hv chkd the gas cap...it seems to be fine and shut tight...
Offlate I have been experiencing a couple of other problems...
The brakes tend to grab when coming to a stop...the engine also surges for a second...or two...the brakes act funny only at very low speeds or when coming to a stop....
The engine emanates a knocking sound when I rev up in park or neutral or accelerate in drive...for a very short time....I dont hear that sound when I'm normally cruising....The sound is more like that of a worn connecting or crankshaft bearing....But then if thats the case shouldn't it be constant...the engine runs smooth when cruising normally...even at higher speeds.....
The Auto-transmission tends to hesitate a bit before changing gears..
Would adding a bottle of Trans-X help..??
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96 C220

saturnstyl

Sloooooow down there fella. Take care of one thing at a time, you may find some of your problems are related.
First of all, a diagnostic should have diagnosed your problem. Sounds like they simply pulled the fault codes and did nothing else.
The purge valve should be tested to see if it is functioning. I believe the most common cause is simply the valve quits working.
Your motor is also real bad about getting a noisy belt shock or tensioner. They rattle a lot when they go bad.
Both of these repairs are fairly inexpensive.

Perinchery

I replaced the Belt Tensioner and the flex disc a month back...
The sound still persists...
Any suggestions would be appreciated...

saturnstyl

What about the belt shock? Only thing I can think of at the moment. Noises are hard to diagnose over the internet.

Perinchery

Yes I hv replaced the Belt Shock also...
I'm at a loss to figure out as to why the sound comes up and now this error code of Incorrect Purge flow...
Any suggestions would be appreciated...
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96, C220

Perinchery

I looked around for the Purge valve...
Could not find it... Next to the w/s washer reservior all I could see is the
ABS pump... The ABS pump does not tick or feel like it working even with the
engine running... Is this how it is supposed to be..???
Does the ABS start working when u slam on the brakes..?
Is the purge valve under the w/s reservior...??
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96 C220

Perinchery

Hi,

I finally found the Purge valve...
I checked the purge valve....found that the terminals were corroded...
I cleaned the terminals...chkd the voltage at the connector..( 11.75 V)
Connected and checked again...Now with the switch turned on w/o the engine started the purge valve was not operational even though there was voltage at the connectors. I started the engine and after sometime the purge valve started ticking... I shut the engine...restarted...same...The purge valve started working after some time....Is this how it suposed to be...?
Or should it start working the moment you switch on the ignition?
Now that the purge valve started working I went about resetting the Check Engine Light.... Tried AZ...they said they cannot...So disconnected the battery for a couple of mins...and lo and behold...the CEL was reset..
Drove the car for an hour...The light hasn't come up yet...
If the fault still exists how long would it take for the CEL to come on again..??

Dsteeze64

• Did it ever come back on?