part throttle stumbletown usa
Thread Starter
Senior Member
Joined: Nov 2002
Posts: 2,286
From: Cincinnati, Oh hi hoe!
doesnt matter what i set the tps to it does it
doesnt do it right after starting it, starts happening 1-2 minutes into driving it.
if i redline through some gears it takes a few seconds of holding it at part throttle for it to start bucking.
doesnt do it right after starting it, starts happening 1-2 minutes into driving it.
if i redline through some gears it takes a few seconds of holding it at part throttle for it to start bucking.
Thread Starter
Senior Member
Joined: Nov 2002
Posts: 2,286
From: Cincinnati, Oh hi hoe!
fuel leaks fixed
still stumbling.
its fine engine breaking or WOT, but like part throttle keeping any sort of speed just cruising it stumbles and bucks and bleh.
it just makes it a pain in the *** to drive anywhere.
and im basically out of ideas.
guess ill pull the uim and get a look at the injectors, maybe ones halfway clogged i dont know.
still stumbling.
its fine engine breaking or WOT, but like part throttle keeping any sort of speed just cruising it stumbles and bucks and bleh.
it just makes it a pain in the *** to drive anywhere.
and im basically out of ideas.
guess ill pull the uim and get a look at the injectors, maybe ones halfway clogged i dont know.
Junior Member
Joined: Aug 2007
Posts: 21
From: Jensen Beach, Fla.
Try trading out your coil packs, I had the same stumble with my RX7 and it was the ignition.
Also, is everything grounded correctly? Engine Fuse box and ECU? By engine I mean do you have more than that skinny *** wire to the fire wall, a thick battery cable size wire should be run from the bell housing to the frame as well.
Also, is everything grounded correctly? Engine Fuse box and ECU? By engine I mean do you have more than that skinny *** wire to the fire wall, a thick battery cable size wire should be run from the bell housing to the frame as well.
Thread Starter
Senior Member
Joined: Nov 2002
Posts: 2,286
From: Cincinnati, Oh hi hoe!
Originally Posted by Jims554321' post='880464' date='Aug 16 2007, 05:31 PM
Try trading out your coil packs, I had the same stumble with my RX7 and it was the ignition.
Also, is everything grounded correctly? Engine Fuse box and ECU? By engine I mean do you have more than that skinny *** wire to the fire wall, a thick battery cable size wire should be run from the bell housing to the frame as well.
Also, is everything grounded correctly? Engine Fuse box and ECU? By engine I mean do you have more than that skinny *** wire to the fire wall, a thick battery cable size wire should be run from the bell housing to the frame as well.
have some 6 gauge wire ran everywhere.
from the battery ground int he back (relocated battery), to one of the ecu nuts, through the firewall to the shock tower, motor, and other shock tower, and stock battery ground wire.
it got worse today. went to crank it, started then immidietly died, flooded, eventually got it started. idle is worse, below 1k bouncing feels like its dying, stumbles much harder now, basically like cutting out.
cut out flooring it at high rpms a few times too...
JIMS! i didnt realize that was you. havent seen you round these parts in a while.
Thread Starter
Senior Member
Joined: Nov 2002
Posts: 2,286
From: Cincinnati, Oh hi hoe!
gonna go see if i can find the rusty tps and see if that fixes it.
maybe pull the uim and get a look at the injectors.
good thing i have spares of everything cause i seem to be damn near replacing everything trying to track this down.
maybe pull the uim and get a look at the injectors.
good thing i have spares of everything cause i seem to be damn near replacing everything trying to track this down.
Thread Starter
Senior Member
Joined: Nov 2002
Posts: 2,286
From: Cincinnati, Oh hi hoe!
one of the uim nuts was loose and one of the primary injectors has a cracked pintle cap. looks like i forgot the spacer that goes between the primary rail and the block.
ill put it back together tomorrow and hopefully itll work.
ill put it back together tomorrow and hopefully itll work.
