engine code

jbduramaxlbz · 07-14-2007, 01:07 PM

hey i have a 2007 chevy 2500hd classic with a lbz. I have a 4 in turboback with a edge uice with attitude. I installed a PPE codeblocker and a egr blocker plate. i drove the truck for 3 weeks after installing this stuff without getting a engine light. Then one day it came on. The code was 402(EGR excessive flow). I was driving a 45 kmh. No hard acceleration or anything. Normal driving. ANY help is greatly appreciated

**ob_1jr** · 07-14-2007, 03:02 PM

Check your connections to your code blocker. did you solder them or did you use scotch locks?

jbduramaxlbz · 07-15-2007, 05:32 AM

i used butt connectors, but i was thinking i probably shoould solder them.

**ob_1jr** · 07-15-2007, 10:38 AM

Yeah, solder them and see if it goes away.

jbduramaxlbz · 07-17-2007, 10:44 AM

yeah i will try that thanks. But if that does not work then i dont know what to do... send the code blocker back for a new one maybe?.

**ob_1jr** · 07-17-2007, 10:48 AM

Yeah, probably...did you double check you blocker plate?

jbduramaxlbz · 07-18-2007, 10:01 AM

what do you mean, check if it is fully seated.? or check if its leaking
??
thanks

**ob_1jr** · 07-18-2007, 04:24 PM

both..fully seated and tight.

jbduramaxlbz · 07-18-2007, 05:00 PM

would that cause a code? i am guessing yes since code 402 is egr excessive flow??? the egr blocker i received had LBZ etched into it. However it did not fit very well at all. I dremeled it out slightly to get a better fit. Maybe i should dremel it out some more to get a better fit. Thanks

**ob_1jr** · 07-18-2007, 07:01 PM

Yeah, I would check that if your truck still trips the codes after you solder your code blocker in.