Falcon20x
Registered User
Remind me of my first SC back in the 90's. I would be driving , everything was fine, I out of nowhere here it comes the hard pedal. Nearly rear end someone twice! Pulled over or limp the car back home, then the issue would disappear.Symptoms are as follows:
Upon initial startup, USUALLY (not always) system tests fine.
Anywhere from two minutes to twenty minutes into driving, abs light and brake light come on and the pedal gets hard shortly thereafter.
Upon turning off, key on and USUALLY (not always) only brake light is on.
Leave the car off for several days and the system works again briefly.
The issue always arises after I touch the brakes.
The brake fluid is full. It was full when I replaced the accumulator back in May, and was full at the start of this new onslaught, and has remained so. Perhaps some sir got into the system when I replaced the accumulator?
Is there a way I can disable the abs without switching to a conventional system from a donor bird or mark viii or cougar?
Honestly the issue in that thread is so similar to mine. I'm going to have the mechanic who did my AC bleed them. He said he'd do it for free, so what's to lose...
Since you have already replaced the computer and you know the pump works, I would say that either the relay or the pressure switch is your issue. Lickely to be the relay.
As I mentioned before in the case of my current car the brand new relay was causing the issue.
For your sake I hope it is one or the other, otherwise you will be chasing a wiring issue.
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