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still stalls and dies when goin slow

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Old 05-31-2011, 09:04 PM
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hey i cant figure this out when im in rverse or goin slow from a stoplight the whoile truck shuddders and stalls mostly when i dont give it a ton of gas to get it not to stall it dosnt shift well unless i let off the gas and itll switch intpo the right gear so i think i got a vaccum thing in my transmission but could this make it shudder and stall when going slow?also when i stop and turn it off it shudders and makes a souind like it releasing a bunch of exhaust ..it pops kinda like a backfire befor it dies also..ive adjusted the carb done the timeing a bunch replaced some vaccum lines i just dont get it ..please help 78 k5
 
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Old 06-01-2011, 10:14 AM
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Check the ERG Valve
 
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Old 06-01-2011, 06:41 PM
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what is it and where is it
 
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Old 06-01-2011, 08:22 PM
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He means the EGR valve (The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. This results in a cooler, more complete burn of the fuel which decreases you car's noxious emissions by prohibiting the formation of some harmful gases.), it should be located on the intake manifold. Here's a picture of it, EGR Valve for 78 K5
 
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Old 06-01-2011, 09:15 PM
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does that seem like the symptoms of a bad egr valve because those arent that cheap but if thats it then thats pretty easy
 
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Old 06-02-2011, 07:29 AM
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just block it off, unless you have emissions testing in your area.
I bought mine at advanced auto parts but you can get them just about anywere, or you can make your own
 
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Old 06-02-2011, 06:04 PM
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if i blocked it off how would i do that ..just so i cand see if thats the problem .then if it is ill go get a new one i dont know how to block it off though
 
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Old 06-02-2011, 07:06 PM
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im guessing my EGR valve is bolted straight to my maifold under my carb but theres a smaller similar lookin thing with a vaccum hose goin to it under my distributor but im guessin its the bigger one under the carb oh yeh its a 78 k5 350 whats the tourque on the egr valve?
 
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Old 06-04-2011, 06:33 PM
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to block off just unbolt and bolt on plate with new gasket, could not find the bolt torque specs on it but i just tighten it down. as for the vacuum line just block it off
egr+block+off+plate - JEGS High Performance
 
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Old 06-04-2011, 09:32 PM
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hey thanks for the link i didnt thing about jegs even though i get the catalog its 13-18 ft.lbs i foud out i finnally got my service manual back
 

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