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Old 12-21-2007, 01:23 PM   #1
policetruck
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Join Date: Nov 2007
Location: lititz pa
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need some help please

i have a 1990 burb. it is a 350 efi i just changed the fuel filter and cleaned out the throtle body with spray. the truck runs great when i am on the gas but when i am trying to creep through traffic it seems to go and then die off and then go and then die off. like i am getting on and off the gas. sometimes it seems to iideal a little low sometimes to. but then other times it sems to have no trouble. very confused? any help???
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Old 12-21-2007, 01:54 PM   #2
90\87Formula
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Re: need some help please

I just posted a thread with basically the same problem. The thread is right below yours. I've got one response so far. He said to check the throttle position sensor.
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Old 12-21-2007, 04:24 PM   #3
ChevyTech
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Re: need some help please

Did the problem start after cleaning the TBI unit with carb cleaner?
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Old 12-21-2007, 04:58 PM   #4
1974k5blazer
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Re: need some help please

common probs with tb, map sensor, throttle pos sensor, cant remember the name of the other one the three plugs on the actual tb itself, check voltage to those
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Old 12-21-2007, 07:24 PM   #5
cstanley
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Re: need some help please

my 98 dodge used to do that when the battery was about to explode. replaced battery, all was better.
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