1996 Toyota Corolla Transmission fluid replacement

Tiny
USERMMA
  • MEMBER
  • 1996 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 230,500 MILES
I have replaced the transmission fluid which was really dark and smell burnt recommended by toyota tech but after changing the fluid I can hear knocking sound under driver side that might be issue because of residual particles left and would it be a major issue in long run. It is been just one day after replacement of ATF and car is been drove for 50 miles
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Monday, June 7th, 2010 AT 4:16 PM

5 Replies

Tiny
MMPRINCE4000
  • EXPERT
Is this "knock" only at idle or gets worse with rpm?
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Tuesday, June 8th, 2010 AT 8:24 AM
Tiny
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Thanks for reply. It knocks at idle but it is not laoud. I put some lucas transmission repair fluid in it and noticed it shifts smoother but when I push the brake and engine starts to idle I can hear the knocking sound.
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Tuesday, June 8th, 2010 AT 8:33 AM
Tiny
MMPRINCE4000
  • EXPERT
Is it a very light knock, that only happens at idle, then goes away when you idle up?
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Wednesday, June 9th, 2010 AT 8:07 AM
Tiny
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Yes you are correct.
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Wednesday, June 9th, 2010 AT 8:23 AM
Tiny
MMPRINCE4000
  • EXPERT
I have seen some early Corolla's that make this noise, while it sounds like a bearing, it is not.

Possible torque convertor, torque convertor bolts to flexplate, PS pump etc.

I have a 91 that has made this noise for the last 60K.
I changed engines, transmissions, oil pump, waterpump, stem seals, alternator, camshaft shims, CV axles, and noise is still there.

I don't worry about it.

Change oil every 3-5K and trans fluid every 24K. Flush and drain cooling system every 2 years.
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Thursday, June 10th, 2010 AT 8:19 AM

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