i just redently bought this 91 vert and it ran fine all week since i picked it up last sunday,, but as of today its started doin this wierd cutout. ok heres the symptoms.. if i corner any faster then normal the motor like shuts down, and as of today if i try and accelerate too fast it shuts down. iut dont die just like cuts out then back in,, and if im goin down the interstate doin like 65-80 she cuts in and out pretty bad. ok ive replaced the plugs and wires and changed the oil, and fuel filter over the past week,, do u think the iridium plugs have to do with anything?? lemme know what u all think it could be b4 i go crazy and start spending money i dont have to...thanks guys!!

 

Clogged fuel pump pick up filter in the gas tank has the symtoms you describe.

 

it has had an auto to manual swap down i assume it was done professional cus everything is clean underneath,, how do i go about checking that fiulter do u know?? sorry i sound like a newbie this is my first vert and i know things r different,

 

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Help us help you. Download the Factory Service Manual (workshop manual) and go through the troubleshooting sections for hesitation when the engine is running. That's in the 04A_Fuel_and_Emission_control_systems_non_turbo.pd f. This will get you up to speed. Start on page F1-13.

http://www.teamfc3s.org/main/factory...ual/1989_1991/

 

code blue r u on right now pm me if u r

 

I had the same problem - .... go easy on the gas pedal.. fine... but at 3500 rpm it would "bog down" or "sputter" if I went any faster.... Turned out to be that the variable port valves were sticking and needed replacing.

As soon as a replaced them - it "Purred like a kitten" - smooth acceleration right up to red-line.

 

Is the electrical connector on your AFM tight?

 

if anything...you should first go to the auto parts store and get a fuel pump filter sock for a 86 to whenever rx-7 (all interchangeable) and replace that. not a fuel filter, but a filter sock...it goes directly onto the fuel pump.