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EGR Fault 1995 945 NA 900

posted by  Turbine1 on  Tue Jul 19 13:28 CST 2005
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last visit: Sat May 5 11:14 CST 2012
[RELATED]

Every couple of weeks I get the check-engine light, and when I check the OBD1 I get the same code, 2-4-1, which the FAQ tells me is "Low EGR Flow". The idle is a little rough also, which is consistent with this EGR fault.
Can anyone offer any advice on troubleshooting to find the root of the problem. I have read the relevant FAQ sections and I know how to remove and check the EGR valve. But according to the FAQ this fault can also be caused by Faulty wiring, EGR vacuum or controller, EGR temp sensor. How do I go about checking these other items?
Thanks
--
Current: '95 945, 98k miles; '90 BMW 325i, 95k miles. Former Volvos, gone but not forgotten '85 245, 250k miles; '91 744T, 150k miles







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