My daughters 90 190E 2.6 has the "Check Engine" light on. According to the smog guy, he read two codes. One was something about uneven coolant flow, and the other about the EGR switch over valve. He's just a drop in smog shop and doesn't have too much of an idea where to start. Is this too vague to get any input?

I stopped back by this evening to get the numbers. They are (16) & (19). Will these help?

Looks like the EGR problem may be solved. The relay that operates the EGR was sticking and the steel tube that goes from the EGR valve to the intake manifold was plugged.

Can any one give me some help on the code for the coolant flow problem?
Ernie

Do a search for the member "JimF" using the search function at the top of the page, then click on the red house below a posting of his to go to his homepage. I'm not sure about the 190 but there might be some info that should help you out. GOod luck.

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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)