EGR valve replacement

[TonyGonz]

I have had my '95 Blazer for 8 years, in the last four I've replaced the EGR valve 3 times...Carbon gets stuck.

The last time I was told they also added a "screen" to help reduce the problem...this was 6 months ago, now I'm starting to get the same symptoms again.

Does Chevy have a solution or do I need to replace this valve regularly...It doesn't sound like very good engineering to me.

Tony

[mike3028]

had the same problem myself. ended up havig to pull the intake and letting it soak overnight to get all the carbon out. haven't had any problems since -- about 2 yrs. i take that this is on a 4.3 vortec. my mech said these are a problem with these motors.

[Gocards]

I had a 94 S10 zr2 package. I loved the truck but had the same EGR valve problem. Nothing I did ever helped. I came up with all kinds of tricks to save me from breaking down. I actually had 3 working EGR valves for that truck at one time. The problem is that the carbon builds up in the engine and gets stuck in the spring of the EGR valve. The initial fix is to just remove the chuck of carbon. Then clean it out really good. But the problem is that this carbon is going to come back no matter what you do. I finally gave the truck to my Dad and after 3 times breaking down he removed has the fix. Though it may not be legal in your area. He unplugged the EGR valve that is ont he manifold. Then wired the spare EGR valve in the engine compartment. The reconnected to it. The truck is running better than I ever seen it run. I dont think this would cause any long term problems. I wish I would not have gotten rid of it now because that was the only problem I ever had with that truck.

[Kafka45]

Originally Posted by Gocards

I had a 94 S10 zr2 package. I loved the truck but had the same EGR valve problem. Nothing I did ever helped. I came up with all kinds of tricks to save me from breaking down. I actually had 3 working EGR valves for that truck at one time. The problem is that the carbon builds up in the engine and gets stuck in the spring of the EGR valve. The initial fix is to just remove the chuck of carbon. Then clean it out really good. But the problem is that this carbon is going to come back no matter what you do. I finally gave the truck to my Dad and after 3 times breaking down he removed has the fix. Though it may not be legal in your area. He unplugged the EGR valve that is ont he manifold. Then wired the spare EGR valve in the engine compartment. The reconnected to it. The truck is running better than I ever seen it run. I dont think this would cause any long term problems. I wish I would not have gotten rid of it now because that was the only problem I ever had with that truck.

I'm having the same d*** problem. You mean I just put the spare egr valve someplace under the hood and hook it to the original wiring and it will work?? I just replaced the egr valve 7 days ago and its already acting clogged... sheesh.

[BlazerLT]

Originally Posted by TonyGonz

I have had my '95 Blazer for 8 years, in the last four I've replaced the EGR valve 3 times...Carbon gets stuck.

The last time I was told they also added a "screen" to help reduce the problem...this was 6 months ago, now I'm starting to get the same symptoms again.

Does Chevy have a solution or do I need to replace this valve regularly...It doesn't sound like very good engineering to me.

Tony

Tony,

Stop replacing the valve everytime carbon gets stuck in it. You don't have to replace it, you remove the valve from the truck, you remove the piece of carbon from the valve, you spray inside the valve thoroughly with throttle body cleaner and you reinstall. Then you reset the computer by pulling the negative battery off of the battery for 5 minutes.

VOILA! Fixed!

Start doing these things yourself and stop going to shops that like to replace an expensive valve for nothing.