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Code blinks 2-4-1 900 1993

posted by  someone claiming to be Donald E Booth on  Fri May 13 11:13 CST 2011 [RELATED]

I will second that. About two years ago, I had the vacuum line fail from
heat related rot where it connects to the EGR valve. It is attached on
the forward facing side of the valve under the intake manifold (roughly
below cylinder #3)

The funny thing was that Volvo used very thin plastic vacuum line, and just
prior to the valve, they attached about two inches of standard vacuum hose.

Thus, in order to repair it I have to get vacuum hose with an ID that would
match the OD of the plastic line. Then I used a black gasket sealant to
make the joint airtight. To get this done I removed the intake manifold,
but I wanted to replace the gasket anyway. I do not know if you could get
there with it in place.

I would recommend changing out all the vacuum lines if this is your problem.


Donald E Booth

1994 945, B230F engine, AW71 transmission, 166,000 miles
1993 945, B230T engine, AW71 transmission, 130,000 miles
1993 245, B230F engine, AW70 transmission, 176,000 miles

Gone but not forgotten
1991 245, B230F engine, M47 transmission, 122,000 miles
1984 245, B23F engine, M46 transmission, 275,000 miles






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