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egr problem

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Old 01-17-2006, 10:33 PM
MintHill68f100 MintHill68f100 is offline
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egr problem

my 94 lightning seems to be cloggin up the egr valve regularly, as in every couple hundred miles. is there anyone that knows why. i havent brought myself to buy a new one yet bc they are so expensive and i can only find them at the dealership. but i mean cleanin it out helps it for a lil while and then the engine light comes on.
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Old 06-07-2006, 01:11 AM
ejay115 ejay115 is offline
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I had that problem on my 94 Lightning. The check engine light would come on every so often, I would have to un-stick the plunger in the EGR valve. I eliminated the smog pump and associated equipment, and when I removed the intake to get to the plugs in the head, I noticed that the intake runners were very dirty, and I think that the gasket on the coolant side of the EGR spacer was leaking, causing coolant to go into the EGR valve. I had another problem of coolant going somewhere, and couldnt find out where.
So far, I have not used any more antifreeze. Maybe that was it, but I cant be sure cause with the smog equipment gone, the light come on all the time......
Which is my problem, how do I get the EGR out of the check engine light system....
BTW, I will post a step by step list of what I did to get rid of the smog pump when I am sure everything is ok..... after 800 miles, so far, so good....
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Old 06-09-2006, 10:36 AM
MintHill68f100 MintHill68f100 is offline
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u have to purchase a twEECer to reprogram ur ecm to take the egr out of the system
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