Posted: Fri Nov 04, 2011 2:00 pm Post subject: EGR flow insufficient 2002
Hi im new to this forum and hope somebody here will be able to help me.
I went to get gas and after i filled up the tank and started my car again suddenly the check engine light was on. I went to advance auto and it said EGR flow insufficient. The guy told me my EGR is electric and i should make sure that the hose or pipe or whatever is not just clogged before replacing the valve. Is this something i could do myself and is there any how to videos or anything for a car illiterate?
One thing you can do is seafoam the motor or you can unbolt the egr and try to clean it out with some carb cleaner, but in most cases the problem comes back. New egr's are about 80. The egr's get stuck because of all the carbon on them.
so you think i might as well just replace the egr? and do i have to replace the valve and the egr line? will i also need the gasket? and last but not least is this easy to replace or will i need a mechanic on this?
Well, the problem doesn't come back because of the EGR valve itself; in other words if the one you have now clogs with carbon, a new one probably would too after a while. I would try cleaning it first. What engine do you have? You could probably keep the gasket (clean around that too though) if you're just cleaning it. If you decide to replace the valve then you'll replace the gasket too. It's easy enough to do yourself.
Edit - looks like you have the 3400 or 3800... either way, piece of cake.
I have the 3400. Well i guess i'll get my hands dirty and try to clean it. hopefully i won't break anything in the process. i wish there were how to videos to everything. Anybody know what kind of tools i will need?
i wish i wouldve seen this earlier.let me guess....p0401 code? if its that code im 99% sure its not the egr valve itself. i had the same issue with my 3400 a while back . http://www.naioa.com/v2/module.....mp;t=37556 there is a passage that goes into the upper intake manifold from the egr valve. its clogged. the best way to clean it out is by taking the upper intake manifold off. there is a small hole that comes into the bottom of the intake plenum. im betting thats whats clogged. i used a little bit of carb cleaner to loosen the gunk and used hot water to flush it out. and while i was at it i cleaned the rest of the upper intake out also. the runners were pretty nasty.
the p0401 code is egr flow insufficient. that basically means the egr valve is open like its supposed to be but there is no flow of air.
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