Whats wrong with my 7???
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Whats wrong with my 7???
Okay, i am just getting into this whole rx7 bit. I own a 1991 RX7 GTU N/A. I did a transmission swap from auto to manual, and I am now just trying to finish up a few things. However, I have run into a huge roadblock. When ever I put a load on the engine, it hesitates really bad. If I go up hill, or put the pedal to the floor, it jerks and hesitates like someone who is learning to drvie stick. I have checked and changed all the obvious things
intake
cats
spark plugs
wires
o2 sensor
fuel filter
but i still can't figure it out. I think it might be something electrical, but im not sure. Is there anyone out there with any advice for me?? Thanks a lot!
intake
cats
spark plugs
wires
o2 sensor
fuel filter
but i still can't figure it out. I think it might be something electrical, but im not sure. Is there anyone out there with any advice for me?? Thanks a lot!
#3
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Another common issue - The short range TPS will wear out after ~100,000 miles or so.
The ohms (warm engine) value starts at 1k at idle and goes up to ~5k as you open the throttle.
If there is a worn spot that drops below 1K just above idle, the ECU will give fuel cut hesatations.
The ohms (warm engine) value starts at 1k at idle and goes up to ~5k as you open the throttle.
If there is a worn spot that drops below 1K just above idle, the ECU will give fuel cut hesatations.
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Grounds? One on drivers side, that bolts to the tranny, one on slave, that has a plastic end with it, and one on top of bell housing that has a small bolt and washer with it( this one is actually critical to fuel management).
Also maybe the fifth gear, nuatral switch. Not sure about that one tho, maybe it helps control fuel under a load? Maybe some one can help here. I havent done this swapp.
Also maybe the fifth gear, nuatral switch. Not sure about that one tho, maybe it helps control fuel under a load? Maybe some one can help here. I havent done this swapp.
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I grounded the battery to the frame, the leading coil, the trailing coil, the ecu, the pressure sensor, the transmission, and the intake. It helped out a good bit, but my car still does the same thing. Whenever a load is placed on it, it hesitates really bad as if it isn't getting any fuel or something. But if no load is being placed on the engine, it revs up reallly high and sounds great. Any help here is much appreciated!! Thanks
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Originally posted by Hollywood56
You can also have your fuel pump going on you or it has a dirty sock.
You can also have your fuel pump going on you or it has a dirty sock.
Check the FSM for more specific details.
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