dont know
 

you can buy a code reader for $50 on ebay.
I bought mine at sears for $79.

I do not know if it will tell you what your problem is.

My last codes were just mis fires. but reading the forums pointed to MAS or vacuum leak.
I still have a rough idle. its been 2 months now i cant figure it all out.

in terms of easy to fix. search these forums for instrustions and most everything is easy to fix if you have courage and good light.

You can get the Bosch (same as the MB, without the MB logo) part for considerably less money. I purchased mine from a supplier in San Diego for about US$200.

I had no idea these were so cheap - I thought to get good information the software necessary was at least several hundered dollars??? I've seen ads for this. I'm certainly willing to give it a try for the price you say it can be had.

Thanks!

The inexpensive ones will get the generic OBDII codes, but cannot get the MB proprietary codes. Getting those proprietary codes requires a checker that costs $2,000-3,000 or more.

However, those generic OBDII codes can tell you a lot; so one of those inexpensive readers can be well worth the investment.

auto zone Free Sears $79 Ebay $35
 

The $50-$79 code readers will do what AutoZone does for you for free.
After having them read my codes twice, and clear the codes...I decided I should buy my own.

Looking at Ebay this morning, looks like they are down to $35 delivered.

Good deal, thanks guys - I will check it out. Didn't know Auto Zone would do this for free either!