94 gt motor mounts or Harmonic Balancer??
 

just picked up 94 gt & when i rev it up past 1000 & it goes back down has bad shaking ? read that it could be motor mounts or Harmonic Balancer. people i got it from says had new balancer put on it looks new but idk ? & ive not yet done tune up but it feels like more than a tune up to me. just trying to see if i should put alot of money into it or i should move on, i got it at a pretty good price.

1st 2 videos are of balancer & 3rd is something i seen looks cut with bolt pushed down into it ?

Balancer looks good, that bolt is just plugging the egr tube nothing to worry about unless its leaking exhaust.

Vibrations most likely due to a miss fire. Plugs,wires,cap,rotor. Pull codes http://www.dfwmustangs.net/forums/showthread.php?t=7908 also run optional cylinder balance tests as shown in link.

would it be shaking that bad coming down rpms due to a miss fireneeding Plugs,wires,cap,rotor so on dont feel like a miss fire just bad shaking & im looking over codes im new to whole code thing lol

Yes a bad miss due to faulty plus/wires cap/rotor will shake bad especially as RPMs increase. It could even start to loose spark as RPMs increase.

636 - TOT sensor voltage out of self test range
117 - ECT Sensor Circuit Below Minimum Voltage of 0.2 volts(O), ECT circuit has intermittently failed below minimum 0.2 volts (CM)
217 - EEC detected coil 3 primary circuit failure
332 - EGR valve opening not detected
172 - o2 Sensor sensor circuit indicates system lean (right side)
177 - o2 Sensor circuit indicates system rich (left side)
181 - Right side still lean, at richest adaptive limit, during part throttle
189 - Left side still lean, at richest adaptive limit, during part throttle
116 - ECT out of self test range 0.3 to 3.7 volts
313 - Thermactor air not bypassed during self test
311 - Thermactor air system inoperative (right side)
332 - EGR valve opening not detected
536 - Brake On/Off circuit failure / switch not actuated during KOER test
632 - Overdrive cancel switch not changing state (E4OD)


cylinder balance test 9

codes was going fast my 1st time but im pretty sure i got them all are those bad ? note car has not had tune up in dk how long.