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#31
10-09-2014, 12:00 PM
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The hose - this hose will make a serious vacuum leak, and will absolutely make the car run rough and/or stall. There is a specific part for it, a molded hose with two 45 degree bends in it. I have found that fuel line hose works fine in that spot.
Do check the OVP relay, it will cause stalls, inability to idle, and the ABS light to come on, among other things. Kind of a notorious part really. Check for dubious repair attempts. Often when there is something like a bad vacuum leak, instead of fixing the problem, people tend to do something else to compensate. If you've fixed a problem and now the car runs worse, do look for hack repair attempts.
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-tp 1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS 1988 560SEL "Gunther"- 190K passes anything except a gas station 1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition 
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#32
11-10-2014, 04:14 PM
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Thanks to everyone who suggested changing the OVP!
This cured the non-starting problem, and a lot of the rough idle. The related tranny shifting problem has gone away, maybe. Haven't given it a real test run - probably still going to have to replace or clean the O2 sensor.
__________________
1991 300E 124.030 103.983KE 722358 03 412178 207K 1979 240D 123.123 250K (Project car) 2000 Ford Ranger, 187K 2015 Dodge Ram 1500 EcoDiesel 37K
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#33
03-17-2015, 07:25 PM
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update: the old OVP caused the tranmission shifting issue, and that has gone away.
Still need to replace or clean the O2 sensor, but no real urgent need to do that right away.
__________________
1991 300E 124.030 103.983KE 722358 03 412178 207K 1979 240D 123.123 250K (Project car) 2000 Ford Ranger, 187K 2015 Dodge Ram 1500 EcoDiesel 37K
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#34
05-16-2015, 05:16 PM
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Changed the O2 sensor yesterday, and noticed the check engine light was off as I started to drive.
Darn, if the light didn't turn on again, after about 15 miles. Checked the code when I got home, and there was 17 again, as if I didn't change anything. 
__________________
1991 300E 124.030 103.983KE 722358 03 412178 207K 1979 240D 123.123 250K (Project car) 2000 Ford Ranger, 187K 2015 Dodge Ram 1500 EcoDiesel 37K
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