AboutDennis W Expertise I am a retired Ford master tech specializing in electrical, climate control, emissions, driveability, chassis, brakes, and any light repairs. Currently employed by an independent shop that appreciates my knowledge and abilities.
Cannot answer transmission or parts questions, these are not areas of my expertise.
Experience 32 years of auto repair, diagnosis, and emissions testing, in service staions, independent garages, and 20 years with Ford dealers.
Organizations National Street Rod Association (NSRA)
International Automotive Technicians Network (IATN)
www.blueovaltechs.com
IAMAW (retired)
National Street Rod Association
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Education/Credentials Riverside City College Automotive technology program
Ford Master Tech Certified Engine and Chassis Master (Over 500 hours)
ASE Certified in 7 categories
6 years training in Union 76 Pro-tech program
Awards and Honors 4-time Technician of the Year at Almaden Lincoln Mercury
Ford Master Tech
Union 76 Pro-tech Master tech
Question 93 Ranger 4by4 4.0 auto. For a while after it sat for a couple weeks.The first time I drove it I'd have to pump up the brakes then it would be fine till I parked it again.
It started leaking from the left rear line.I fixed that and bled all 4 brakes.With the engine off the brakes felt normal(the pedal barely pushes down)Start the engine and the pedal goes to the floor.So I replaced the master cylinder and bled all 4 brakes again. With the engine off the pedal barely goes down,start the engine and the pedal goes to the floor and won't pump up.There are no leaks but the vacumn chamber between the master cylinder and the fire wall is realy rusted on the underside but it seems to hold vacumn.Could this be my problem?
Answer Hopefully you used new parts, most of the reman or rebuilt master cylinders are junk. If this truck has 4 wheel ABS, it will need an ABS brake bleed procedure and may require a scanner.
If it has rear wheel ABS, and there are no leaks, could be a stuck RABS valve.
