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Posted

Hello. 1989 Reatta, power brakes usually work for a while into a drive, then sooner or later I get the low brake pressure alarm and two footed, white knuckled breaking.

I can't find the problem.

Any guesses?

 

If there is a way to find it through the CRT I haven't been able to figure out where to find that data.

TIA

Posted

There is nothing in the crt that indicates brake performance or condition. The red and amber brake/abs warning lights are the indicators. Can you hear the brake pump running when the red light comes on? If not, you will need to determine if it is getting power when it fails to run.

  • Like 1
Posted

Going away and light turning on when hitting the brake is usually the accumulator. Spin  off/on replacement.

Posted
On 4/23/2022 at 12:40 AM, padgett said:

Going away and light turning on when hitting the brake is usually the accumulator. Spin  off/on replacement.

Not the accumulator. This is electrical, like the pump itself it intermittent. I used to be able to find them at the U Pull and Pay yard all day long but not anymore.

 

Posted

May need an assistant but may need to feel if pump is turning on. Light going off at start but coming on during a stop & going off a while later is probably not the pump. BYT both yellow ABS and red BRAKE lights should come on at same time.

Posted

Should have said that electrical can be the EBCM, relay, presssure switch, or motor (or frozen pump which will burn up motor). Are you able to see the blink codes. 12 is normal operation.

Posted
49 minutes ago, padgett said:

Should have said that electrical can be the EBCM, relay, presssure switch, or motor (or frozen pump which will burn up motor). Are you able to see the blink codes. 12 is normal operation.

Padgett is referring to the ALDL and not going through the CRT or Speedometer [depending on the year Reatta you have].

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