QuestionI just recently replaced the brake master on my 1992 Toyota truck as well as the rear proportional valve, but now there seems to be low pressure going to the rear brakes, the front pressure is fine though??
AnswerI am unsure of how much troubleshooting you have done and what repairs you may have performed so I am kind of shooting in the dark here, but here is what I would do.
Due to the age of the truck and mileage I would
1. Replace rear wheel cylinders, brakes, check drum thickness ($50)
2. Flush and bleed entire system ($50)
3. Make sure booster is working properly (????)
