Feedback carb issues
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Postmaster
Joined: Jul 2003
Posts: 2,711
Likes: 2
From: Pittsburgh
Feedback carb issues
Allright, i'm finally having issues with the feedback on my '85. At idle every now and then it'll want to idle really really high (as in if i get off the gas in 2nd gear it'll want to cruise at 25) 
THEN when it comes down it starts to sputter and stumble almost like it has really BAD vaccuum leak, but it doesn't have one so i think it's leaning out real bad. Every now and then when i wind the truck out in gear (it's a NP435, gotta wind it with my 3.08's) it'll be wrapping up and runing great, then it'll fall flat on its face like it's out of gas and will start to surge and buck, but not every time.
All of these problems are real erratic and don't do it regularily enough for me to be under the hood to watch it. Any ideas on a fix, or is it just time for me to do my DSII ignition and carb swap?
Justin
P.S. It isn't the fuel filter or the pump
THEN when it comes down it starts to sputter and stumble almost like it has really BAD vaccuum leak, but it doesn't have one so i think it's leaning out real bad. Every now and then when i wind the truck out in gear (it's a NP435, gotta wind it with my 3.08's) it'll be wrapping up and runing great, then it'll fall flat on its face like it's out of gas and will start to surge and buck, but not every time.All of these problems are real erratic and don't do it regularily enough for me to be under the hood to watch it. Any ideas on a fix, or is it just time for me to do my DSII ignition and carb swap?
Justin
P.S. It isn't the fuel filter or the pump
Thread Starter
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Postmaster
Joined: Jul 2003
Posts: 2,711
Likes: 2
From: Pittsburgh
it doesn't happen consistently enough to be an ignition issue, it is definitely a fuel issue. I figured out what's causing it to idle high, the throttle positioner is sticking, but what would caus the truck to lean out at idle and act like it has bad vaccuum?
On an '85 where and how do you pull the codes?
Justin
On an '85 where and how do you pull the codes?
Justin
Posting Guru
Joined: Jan 2001
Posts: 2,358
Likes: 3
From: Nebraska
http://www.dalidesign.com/hbook/eectest.html
This site explains the procedure for pulling the codes. The connector is on the passenger side near the battery (my 86's is red).
This site explains the procedure for pulling the codes. The connector is on the passenger side near the battery (my 86's is red).
