EGR ports clogged??? i think???
10-06-2010, 05:36 PM
#12
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Had the same problem with my 97 with the check engine light going on and off. The scanner reading was the egr system which ended up being a clogged egr port on the throttle body...............................bob106
10-10-2010, 07:30 PM
#13
Senior Member
My 97 4.6L CEL came on....insufficient EGR flow. Vacuum checked the EGR valve, OK. Checked EGR tube and hoses, all clean and clear. Pulled the intake goose-neck to unclog the passages and the passages were blackened, but not clogged. Ultimately replaced the DP sensor and all is now well. 
The EGR ports are so dam*ed big I don't see how they could ever clog, but some do I guess.
My EGR on the elbow that holds the throttle body was clogged shut. I shoved a screwdriver through it to break it free. didn't reuse it though I'm going 5.4