A/T - RE4F04A and RE4F04V Jerking or Shudder in Lock-Up
DATE: 1995TECHNICAL BULLETIN # 299
TRANSMISSION: RE4F04A and RE4F04V
SUBJECT: Jerking or Shudder in Lock Up
APPLICATION: 1990-92 Stanza
1990-92 Stanza with RE4F04A and RE4F04V
This condition may be caused by restricted or carbon-plugged EGR ports leading to one or more cylinders.
Diagnosis and Repair: Disable EGR flow at valve or from exhaust. If the condition goes away, clean all EGR passages in the intake manifold and cylinder head.
If the condition did not change, check line pressure and cooler flow. "Hot Wire" the TCC solenoid to isolate the cause. If the condition goes away, check the computer control system. If the condition remains with the TCC solenoid "Hot Wired", the problem may be due to hydraulic operation or ignition misfire.