Just completely rebuilt the suspension on '90 XR7. In the process had the calipers/lines and rotors all off. I capped all the lines on the car to keep resivor (sp) from draining. Using all the original brake parts (calipers, pads, rotors, hoses, ect), just painted. Everything worked well/perfect before (MAYBE it took the pump a little longer to reach pressure on first start than when I started driving it a few years ago.
Now the front calipers won't bleed. I get a first burst of fluid when first opening bleeder, then no flow, key on or off, both sides the same. I can see the pistons/pads moving as helper pumps/holds the pedal. Rears, key on slight application of pedal, good flow no bubbles, clean new fluid. Estimate I've pushed about a pint thru the rears. Pedal is always soft, brake light comes and goes during procedure intermittently, but is off with key on or car running and no activation of pedal. Never get anti-lock light. When key is turned to on position after being off for a while pump cycles properly. If key is turned off for couple minutes, then back on, no pump cycle, so I believe the relay and pressure switch are working, and it builds/holds pressure until the pedal is pressed. Pump comes on every time the pedal is applied at all (light or heavy). Accumulator problem? Could/did it go bad during procedure?
Only other strange symptom is the firm ride light is always on UNTIL pedal is pumped up and stood on hard and some pressure is built near the floor. As if switch is working backwards (on with no pressure, off when pressure applied). New brake pressure switch from Bill at SCP. Unplug the new switch, firm ride light goes off and stays off til firm ride turned on. Hoping this is a symptom of bleeding problem and will go away once bled out properly. All the Tokiko shock and struts are new.
Any and all help is appreciated!
Thanks
Adam
Now the front calipers won't bleed. I get a first burst of fluid when first opening bleeder, then no flow, key on or off, both sides the same. I can see the pistons/pads moving as helper pumps/holds the pedal. Rears, key on slight application of pedal, good flow no bubbles, clean new fluid. Estimate I've pushed about a pint thru the rears. Pedal is always soft, brake light comes and goes during procedure intermittently, but is off with key on or car running and no activation of pedal. Never get anti-lock light. When key is turned to on position after being off for a while pump cycles properly. If key is turned off for couple minutes, then back on, no pump cycle, so I believe the relay and pressure switch are working, and it builds/holds pressure until the pedal is pressed. Pump comes on every time the pedal is applied at all (light or heavy). Accumulator problem? Could/did it go bad during procedure?
Only other strange symptom is the firm ride light is always on UNTIL pedal is pumped up and stood on hard and some pressure is built near the floor. As if switch is working backwards (on with no pressure, off when pressure applied). New brake pressure switch from Bill at SCP. Unplug the new switch, firm ride light goes off and stays off til firm ride turned on. Hoping this is a symptom of bleeding problem and will go away once bled out properly. All the Tokiko shock and struts are new.
Any and all help is appreciated!
Thanks
Adam
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