low rpm stumble HELP!!
05-17-2009, 06:16 PM
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low rpm stumble HELP!! well i have the infamous low rpm stumble 
.
its a 93 and all of my ignition is just a year old. ngk plugs, msd wires, msd coil, msd vented cap + rotor.
I just replaced the o2 sensors and it didnt help anything.
could my problem be the opti? could it cause the low rpm stumble?
it had some oil slung onto it from when my crank hub came loose, think that would have messed it up? that happened about a week or 2 b4 the stumble started.
wat do yall think?
Thanks!!
.its a 93 and all of my ignition is just a year old. ngk plugs, msd wires, msd coil, msd vented cap + rotor.
I just replaced the o2 sensors and it didnt help anything.
could my problem be the opti? could it cause the low rpm stumble?
it had some oil slung onto it from when my crank hub came loose, think that would have messed it up? that happened about a week or 2 b4 the stumble started.
wat do yall think?
Thanks!!
05-17-2009, 06:39 PM
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Maybe it's a fuel issue. Possibly checking fuel pressure at idle and KIEO. Mine's doing this as well and I've been told it could be a fuel issue. Don't necessarily think it's an ignition problem. Worth a shot anyway haha.
05-17-2009, 06:50 PM
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Could be a dirty throttle body, or tear in you intake before the throttle body. Just start testing different components and eliminating them, and you will find the issue. Usually a bad opti will throw a code.
hth
andy schuck
hth
andy schuck
05-17-2009, 06:54 PM
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well ive got a walbro 255 thats a year old too. i just figured it wouldnt be fuel related since it doesnt stumble any in higher rpms and at wot
its a 93 so theres no maf
well its always had thrown codes, since i havent got a tune or anything since ive deleted my egr and stuff.
i havnt checked to see wat other codes it might be throwing.
oh and would i need to disconect the batt after installing the o2 sensors to reset it?
its a 93 so theres no maf
well its always had thrown codes, since i havent got a tune or anything since ive deleted my egr and stuff.
i havnt checked to see wat other codes it might be throwing.
oh and would i need to disconect the batt after installing the o2 sensors to reset it?
Last edited by joshprescotttttt5; 05-17-2009 at 07:03 PM.
