Transmission shifting heard grinding noise

Tiny
LARRYYARB
  • MEMBER
  • 1995 LEXUS ES
  • 143 MILES
1995 lexus ES300 od light flashing, engine revvving at 3000 rpms 40 mph or higher. Car shifts to P, N, D or R with ease, slight noise. Pulled out of parking lot and heard grinding noise coming from under my shifter, then it went away. Never heard it again.
Do I need a new transmission?
Anything I can do to test to see if transmission is bad?

thanks!
Larry
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Sunday, March 4th, 2012 AT 8:47 PM

15 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Have the computer scanned to identify where the problem is coming from.
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Sunday, March 4th, 2012 AT 8:49 PM
Tiny
LARRYYARB
  • MEMBER
The dealership told me to replace the dash cluster as well. They said to replace dash cluster and ecu at the same time to fix it. Does this make sense to you?
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Monday, March 5th, 2012 AT 5:02 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Not sure about the cluster.
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Monday, March 5th, 2012 AT 5:33 PM
Tiny
LARRYYARB
  • MEMBER
Hey,

I switched out the ecu for a used one thinkin that was the issues. Getting the same codes. Engine still revvin up past 40 mph. What other parts could u suggest to replace?

I just need a list of possible ones thats all.
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Thursday, March 8th, 2012 AT 5:59 PM
Tiny
KHLOW2008
  • EXPERT
Since the OD light is flashing, that would indicate a fault has been detected and you need a scan to retrieve the trouble codes and proceed from there. Without the trouble code, we are looking for a needle in the haystack.
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Friday, March 9th, 2012 AT 12:20 PM
Tiny
LARRYYARB
  • MEMBER
Sir,

The Only codes I can get from testing are P072 and P0500.
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Friday, March 9th, 2012 AT 4:12 PM
Tiny
KHLOW2008
  • EXPERT
P0500 is a fault with the vehicle speed sensor but P072 is not found in our database.

I believe rectifying P0500 might solve your problem.
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Friday, March 9th, 2012 AT 7:01 PM
Tiny
LARRYYARB
  • MEMBER
I found that the speed sensor number 2 could be the problem. It has 2 plugs on it. Do you know where I can locate it on the lexus es300 1994 model?

Thanks!
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Thursday, March 15th, 2012 AT 1:39 PM
Tiny
KHLOW2008
  • EXPERT
Is the speedometer working correctly? If yes, it is not the fault of the VSS # 2. It could be a faulty meter cluster, wiring or ECM.
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Thursday, March 15th, 2012 AT 3:09 PM
Tiny
LARRYYARB
  • MEMBER
Yes it is working.
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Thursday, March 15th, 2012 AT 5:03 PM
Tiny
KHLOW2008
  • EXPERT
Problem is bot due to a fault with the VSS # 2.

Here are the diagnostic procedures for P0500 and P0720, both are the same, one is from the engine diagnostic while the other is from the transmission.

The rrepair recommendation to replace the meter cluster seems to be correct.
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Friday, March 16th, 2012 AT 12:29 PM
Tiny
LARRYYARB
  • MEMBER
Thank you guys for answering some questions. I did get the dash cluster replaced now when I maintain a constant speed, my engine no longer revs and my rpms drop as they should.
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Friday, March 23rd, 2012 AT 12:11 PM
Tiny
KHLOW2008
  • EXPERT
You're welcome.

Glad to know you have fixed the problem. The speed sensor fault caused the engine rpm flares due to a fault with the meter cluster speed sensor.

Have a great day.
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Friday, March 23rd, 2012 AT 12:32 PM
Tiny
LARRYYARB
  • MEMBER
Hey,

I have an update. The check engine light went out on its own and the car worked like it did before. Then it came back on few days later and I am getting the same problem.

The guys at midas tested it and it pointed to an ecm problem.

Could it be soemthing else. What are the odds the ecm I got from the yard is bad?

I know the cluster and wiring should be ok.

Could it be a bad fuel filter? Or a bad cat?

I sent off my ecm to be fixed. I will update when its done.
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Wednesday, April 11th, 2012 AT 3:29 AM
Tiny
KHLOW2008
  • EXPERT
For ECM there is no telling if the unit from the junkyard is bad but the chances of them failing are rare.
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Wednesday, April 11th, 2012 AT 12:48 PM

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