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#1
03-16-2009, 04:27 PM
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87 260E failed smog...Input?
Any thoughts on what direction I should take?
All the moron said at the test center was I needed a new engine   My compression is 185psi across the board.
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2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k 
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#2
03-16-2009, 04:30 PM
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Looks like the fuel system is out of adjustment...the O2 sensor/lambda....
__________________
-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#3
03-16-2009, 04:35 PM
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Quote:
What about thoughts on the cat? So start by checking fuel pressure and testing voltage on the O2 sensor?
__________________
2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k
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#6
03-16-2009, 07:20 PM
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I'd put my bets on an O2 sensor problem if the Lambda is adjusted correctly.
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#7
03-16-2009, 09:35 PM
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Would a faulty O2 sensor alone really cause a GP?
It was oscillating, but around 50% at idle.
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2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k
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#8
03-17-2009, 01:06 AM
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heres a cheat for you, if your car has an air pump. do a quick wiring job to make the air pump run while going through inspection. It will pump air into the exhaust giving you 0 emissions.
__________________
 99 Jetta Mk3 07 Jetta Mk5 89 300E W124 10 E 350 W212 08 C300 W204 Benz's aren't mine 
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#9
03-17-2009, 02:03 AM
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Quote:
I hope what u say is true, because mines failed miserably too. My 90 300 se does have an airpump, to wire her on while going thru smog test is no big deal. It will cost me $23 to test, but is worth to validate your hypothesis. The extra air will burn off the extra hydro-carbon, reduce the CO. I have already unplugged the air valve, it did improved the idle test. Before anything was done, the car failed in just about all count. And the exhaust really stinks with too rich gas. Some guy offer me a used working O2 sensor for $40. I haven't had time to pursue it yet. I live in Vancouver BC we have www.aircare.ca the good news is they will rendered emission test to become History in 3-4 yrs, as newer cars are so clean, so we'll be receiving our Get out of Jail free card soon, but not soon enuf. i wanna my cake & eat it NOW.  I hope I can give u good news very soon. I have tried stud tires as a chap told me, with stud tires it wont be allowed on the dyno drum. But no serie Bob they did the test as if nothing had happened, or the poor testing employee had been rendered redundant already. I do start to feel like I am WIley Coyote or Wicked weasel always try to beat the system at every instance. pray I get thru. God help all of us.
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Last edited by SD300; 03-17-2009 at 02:09 AM.
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#11
03-18-2009, 09:46 AM
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Is it harder for the pre-'90 cars to pass smog since they don't have EGR or an air pump? Seems like that would be the case.....
MI rocks, no smog tests here! 
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#12
03-18-2009, 10:04 AM
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NOx forms when cylinder temps reaches 2500F and higher which indicates a lean condition. A lean mixture will produce oxides of nitrogen since carbon monoxide and hyrdocarbons are down.
I would have the lamda adjusted and the oxygen sensor tested out. Then I would make sure the fuel delievery system is delivering a good amount of fuel.
__________________
1986 300SDL, 211K,Dealership serviced its whole life 1991 190E 2.6(120k) 1983 300D(300k) 1977 300D(211k)
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#13
03-18-2009, 09:47 PM
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I was at an auto parts store and chuckled but was curious when I saw not one but two different additives claiming to "guarantee" smog pass...
__________________
'88 300TE, 175k, black RENNTech 3.6L Recaro C's AMG 1 SOLD '92 500E, 110k, Spruce green, stock SOLD '94 E320 Cabriolet, 130k, E500 wheels, Emerald green SOLD '94 E320 Cabriolet, 110k, black, stock, SOLD '88 300TE, 229k, dark grey, SOLD '90 300CE, 212k, white, new paint, SOLD '91 300E, 209k, white, rebuilt head SOLD '74 914-6, grey, 2.7L 325hp twin turbo Audi conversion
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#14
03-18-2009, 09:55 PM
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Is it true that if you fail the smog test twice as a gross polluter they have to confiscate the car in california?
Should have my ignition wires and idle air hoses tomorrow so will put those on and see how it goes. Once that is done I'll start testing the O2 and Lambda. Wanna make sure I don't have a huge vacuum leak with these rock hard hoses.
__________________
2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k
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#15
03-18-2009, 10:24 PM
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Quote:
__________________
1986 300SDL, 211K,Dealership serviced its whole life 1991 190E 2.6(120k) 1983 300D(300k) 1977 300D(211k)
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