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Group: Members
Posts: 99
Joined: 13-February 05
Member No.: 6,242
Status:
Location: california
Drives: 01 eclipse gs
i installed a new 255 fuel pump on my gs. it worked fine for a while. now the engine i bogging down if i give it more than 30% acceleration in second or higher gear. could the engine be too rich? or could the o2 sensor have gone out?
Group: Moderator Emeritus
Posts: 3,630
Joined: 8-October 04
Member No.: 1,887
Status:
Location: Florence, South Carolina
Drives: 2003 Red Eclipse GT
sounds like you are running rich. do you see black smoke coming out the exhaust when you accelerate?
you need to get to a dyno to see what your a/f ratio is. that will tell you if you are running rich or not. you should get a wideband O2 and a datalogger if you dont have a dyno anywhere around. that would also help you out with the SAFC tuning.
if you have your turboed installed and are not tuned, then i can bet that you are running rich. and this can foul plugs
Group: Members
Posts: 99
Joined: 13-February 05
Member No.: 6,242
Status:
Location: california
Drives: 01 eclipse gs
the turbo isn't on yet. also, i don't think there is black smoke, at least to what i can see. i bogs down during acceleration. i tried cutting back the fuel and now it's really acting funky.
Group: Members
Posts: 99
Joined: 13-February 05
Member No.: 6,242
Status:
Location: california
Drives: 01 eclipse gs
i unplugged the safc when eveything started happing. i reconnected the air flow to the ecu. i installed the fuel pump. and that's it. i don't know what is going on. it's sucking air, yet bogging down.
Group: Moderator Emeritus
Posts: 3,630
Joined: 8-October 04
Member No.: 1,887
Status:
Location: Florence, South Carolina
Drives: 2003 Red Eclipse GT
another question...is your SES light on?
i am thinking that the fuel pump might be pumping too much gas which is causing you to run rich. i have asked a guy and im waiting for him to get back to me.