95 ranger EGR problems

1995 FORD RANGER
130,000 MILES
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J.STIEG
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  • 361 POSTS
I am working on a 95 ford ranger and I got code P0401 (Exhaust Gas Recirculation Flow Insufficient Detected) checked vacuum going to the egr valve with the engine running and there was not any. I replaced the vacuum solenoid and still no change. There is power going to the vacuum solenoid with engine running. Got any ideas on how to troubleshoot?
Apr 4, 2011 at 3:07 PM
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CARADIODOC
  • ✓Experienced Mechanic
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You don't want any EGR at idle when you're standing in front of the truck. That would cause a severe misfire. I would sooner suspect the passages taking the exhaust to the cylinders are plugged with carbon.
Apr 4, 2011 at 3:53 PM
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J.STIEG
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Ok thanks, I forgot that it is closed at idle. I should do a road test next to see if it is responding and getting vacuum to actual EGR valve. I'm sure somethings plugged like you said. I will pull the tube off and and clean all passages.
Apr 4, 2011 at 6:01 PM
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