Posting this here to see if someone has had similar problem and found a solution.
I have this odd problem with my 95 Mx6 LS MTX, Everything runs excellent, except if your giving it light throttle..say crusing at 2-3rpm, thru any gear.. The engine starts to jerk/stumble/chokeout. I dont know how to describe it, its not constant or causing the engine to loose rpms its just annoying. Anything below that 2k its fine, anything above 3k its fine, if you floor it wot any rpm its fine.
I thought maybe I had a leaking intake gasket so I replaced them, and also chased back all my vac lines for VRIS and EGR, ect. I readjusted the TPS, then IAC, then the Timing, it idles perfect, got a consitant 20hg of vac at idle, its right on the dot at 10deg tdc in diagnostics.
Brand new distributor, with new wires, new plugs, new fuel filter, cleaned K&N Filter,new clutch, new crank sensor, new fuel pressure regulator, cleaned and remounted ecu grounds,
The codes I pulled from the ECU are both L02 Sensor inversion and inactive codes, witch I figured they would only cause it to get bad gas mileage.
My only leads are maybe the VAF is causing it, but I dont have an extra to try. Or possible the EGR , witch Id probably just unhook.
Another odd lead: Its really hard to put gas in the tank, you have to manually throttle the gas pump as lightly as possible otherwise it overflows and shuts the pump off. Im guessing the vent for the fuel tank is clogged/rusted, maybe this is "air lock is" restricting the return from the fuel pump however When you remove the fuel cap after the engine is running you can hear the hiss from the vacuum so I dunno.
I have this odd problem with my 95 Mx6 LS MTX, Everything runs excellent, except if your giving it light throttle..say crusing at 2-3rpm, thru any gear.. The engine starts to jerk/stumble/chokeout. I dont know how to describe it, its not constant or causing the engine to loose rpms its just annoying. Anything below that 2k its fine, anything above 3k its fine, if you floor it wot any rpm its fine.
I thought maybe I had a leaking intake gasket so I replaced them, and also chased back all my vac lines for VRIS and EGR, ect. I readjusted the TPS, then IAC, then the Timing, it idles perfect, got a consitant 20hg of vac at idle, its right on the dot at 10deg tdc in diagnostics.
Brand new distributor, with new wires, new plugs, new fuel filter, cleaned K&N Filter,new clutch, new crank sensor, new fuel pressure regulator, cleaned and remounted ecu grounds,
The codes I pulled from the ECU are both L02 Sensor inversion and inactive codes, witch I figured they would only cause it to get bad gas mileage.
My only leads are maybe the VAF is causing it, but I dont have an extra to try. Or possible the EGR , witch Id probably just unhook.
Another odd lead: Its really hard to put gas in the tank, you have to manually throttle the gas pump as lightly as possible otherwise it overflows and shuts the pump off. Im guessing the vent for the fuel tank is clogged/rusted, maybe this is "air lock is" restricting the return from the fuel pump however When you remove the fuel cap after the engine is running you can hear the hiss from the vacuum so I dunno.
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