Question about 1998 Chevrolet S-10 Pickup
I was getting p0401 and p0405 codes put new egr valve and gasket on after I took a piece of wire and cleaned passage in intake reset codes worked fine for a few days the p0405 code poped up.
The truck has two egr vales unless it's a 4 cylinder, then it has one, if it say your slipping and it's automatic change the filter and oil in the transmission and add Lucas transmission fluid conditioner to the tyranny. If the EGR valve is still giving a code then it means something in the egr system is not working, and one item that comes to mind is the purge canister valve on the evaporative control canister. To test find the purge valve and crimp it off with a pair of vise grips to close the vent then drive it. If it runs good then you have found your problem. Also low vacuum can cause the transmission not to shift correctly as it needs a vac. input for it to shift. Check your transmission fluid if it is brown and sort of smells like onions then the fluid is burnt and will cause all types of erratic behavior. And since I took the time to write this I would like to get some feed back as I am about to stop doing this.
Posted on Jul 21, 2009
Since you did not rate my first answer I will not continue.
Posted on Jul 21, 2009
Egr may be fowled again [carbon]
Posted on Jul 20, 2009
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Posted on Jan 02, 2017
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best advice with the EGR valve problem is to make a gasket with a coca cola can and sel it off completely
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