tbi problem -missing down low

[highrider_44s]

i got a tbi 305 and it seems to miss at the bottom end when you excellerate especially under load but soon as it hits 2500 or so and it runs fine /forums/images/graemlins/thinking.gif wtf /forums/images/graemlins/dunno.gif
any way does anyone have any ideas

 

[tx_sub]

check your fuel filter first. when was it last replaced. what kind of shape is the fuel pump in? does it only happen under hard acceleration?

 

[highrider_44s]

already replaced the fuel filter not to sure about the fuel pump but it runs fine after 2500 it's just below that /forums/images/graemlins/dunno.gif

 

[Wingnutt]

Now this may sound kinda silly, but my 88 was missing at lower rpm's and it turned out that she needed a new set of plugs and wires. Just a thought. /forums/images/graemlins/dunno.gif

 

[84_Chevy_K10]

Vacuum leak?

 

[big jimmy 91]

Does it have a mech fuel pump?
I had a fuel pump brand new with a screwed up spring in it that would cause the truck to run at idle or WOT. normally , but in between it would run like a bag of crap
A new pump and all was normal again
Just a thought /forums/images/graemlins/dunno.gif

 

[muddbudd72]

my vote is plug wires and plugs. my 90 was doing same thing. plug wires were only 1 yr old. changed fuel filter and rebuilt tbi still had problem. changed wires and ran fine.

 

[91GMCSuburban]

I have the same problem, and have chaged everything else except wires.
Wire recommendations?

 

[highrider_44s]

yea i was kinda leaning on the wires too but was still unsure but you guys pushed me over the edge i'll have to get some and throw them in /forums/images/graemlins/thumb.gif
i'll let you know if it solves the problem /forums/images/graemlins/peace.gif