Since temps went over the 20 degree mark my engine light has been impossible to keep off. P0401 ...removed plate ....problem solved....why would that be?
This is an excellent suggestion. it's what's always worried me about blocking the EGR completely. If I were ever to to it then it would have to be at the exhaust manifold rather than the in/out of the EGR.Other possible idea... maybe heat exchanger thing where exhaust gasses heat up coolant have over time become all blocked and gunged up...
Project for next Thursday sorted (next day off) ...CheersOther possible idea... maybe heat exchanger thing where exhaust gasses heat up coolant have over time become all blocked and gunged up... not be the first time that's happened.
I'd also guess although the restrictor gaskets improve flow in egr and into intake manifold they probably reduce flow in pipes a little which could help popping deposits elsewhere in pipe...
Could maybe suggest take both egr pipes off heat exchanger and fire loads of cleaner down it (carb/diesel intake or similar and see if much comes out... least it's a cheap thing to try