About Brian Expertise I can answer nearly all questions about carbureted 79-85 Mazda Rx7's. I can also answer most questions about the fuel injected 84-85 GSL-SE, many questions about the Rx2, and most questions about the 75 Rx4. I have a fair ammount of knowlege about the 86 to 91 Rx7 as well.
Experience I have owned upwards of 15 79-85 Rx7's. I have always done all of my own paint, body, mechanical, and electrical work. I race a 74 Mazda Rx2 in Street Mod 2 Auto Cross competition as well.
Organizations I belong to the RCCAZ (Rotary Car Club of Arizona) and I am a moderator on AzRx7.com
Education/Credentials I am certified as a paint and body technician. I am also certified as a computer aided designer and have worked as a mechanical draftsman. Currently, I am a mechanical engineering student.
Awards and Honors I won C-Street Prepared with the Emrald Empire Sports Car Club with an 83 Rx7 in 1999
Question I have a 1993 Mazada Protege DX with a 5 speed standard transmission. While driving down the highway at 60 mph in 5 gear the car jump up like running over a object in the road and lost all the gears. Had the car towed home. Check the linkage and all is ok. The car has 185,000 miles. Replace clutch,pressure plate,throwout bearing at 100,000 miles. The engine start up and runs ok. How can I check to see if my problem is clutch or something else.
Answer It is possible that one of the axles or CV joints is damaged. Hopefully this is the case. If not, then you are probably in need of a new transmission or major transmission repairs. Inspect the axles. It is possible for an axle to bread around the splines, so you may need to remove the axles to inspect them. I would not suspect a clutch problem.
