Ford Ranger / B-Series :: 1990 - Rear Brakes Locked Up When Hit The Brake Pedal Hard
Jul 20, 2009
I have a 1990 4x4 ford Ranger, the little truck was purchased in early 2008 as a work truck but has ended up becoming my main vehicle, it has been a good truck for the most part but know I am having some brake issues, well have been having for some time but they seem to come and go. Usually it happens when I have to hit the brakes hard, the rear brakes lock up, I replaced the master cylinder months ago and thought that fixed it, then a month later it happened again. The last time it happened was friday, the time before that was in march 09'.
I have searched this online and found numerous try this but the original poster never comes back to say if the problem is fixed or what fixed it. My ABS light DOES NOT come on when this happens, it does function properly, it illuminates when the key is turned on then goes off. My parking brake no longer works either but I think that is from me "driving thru" the locked up rear brakes. I plan on replacign both drums and shoes within the next week but would like an option to repair the locking up issue.
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My 1990 4.0 refuses to start when the air temperature outside is at approx 40 degrees or below. It will crank until the battery runs dead if I let it. At approx 50 degrees farenheit the truck takes forever to start and always backfires out of the tailpipe and intake manifold (blowing off a hose on the vacuum tree) before it starts. If I can get it to backfire, it will start eventually. If it does not backfire, then I can run the battery dead and the truck still refuses to start. This condition has grown from a little problem to a huge problem over the past 6 months. Here is what I have done so far, including regular maintenance items.......
KOEO test checked OK
KOER test returned code 77 multiple times (TPS).
Replaced Throttle pos. sensor
Replace Idle air bypass valve
Subsequent KOER test came back with no more codes except 11 - OK
Load tested battery
Made new heavy gauge battery cables for + and -
New plugs, wires
newer starter
Changed coil pack for known good one off my explorer
Visually inspected hoses for vacuum leaks, replaced 1 cracked hose
1990 Ranger ext cab 4X2 4.0L, K&N air filter in stock airbox, Pacesetter headers, single 2 1/2" exhaust, stock cat no muffler, 260K on truck, 104K on good used engine from my 1994 Explorer. Purchased Ranger brand new in 1990. A4LD w/ shift kit.
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I got a 2002 passat 1.8t in the shop fixin some bodywork on it. When its in the cold the brake pedal gets rock hard and if you step on it the brake lights come on and stay on, when it stays in the shop its fine.
Read online about an issue with water getting in the brake booster and freezing. found nothing in the search...
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I have a 1999 XLT and i had a bad moment yesterday. I always put the toolbox in the back side of the cabin, while doing maintenance i tried to open the rear door and I couldn't. I noticed its locked from the upper because the lower looks free. The other thing i noticed the two wires going to the handle to open it feels loose. First time happened to me and i really use that door often.
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This is unusual. After driving into town for new tires, the clutch pedal was hard and I could not depress it after the tire tech parked the truck. It did finally depress with a pop, though the pedal functioned there after the clutch did not function properly.
At times it seemed to be ok at other times it seemed weak. I stopped by Autozone and checked the fluid, seemed low and I added some. Continued home not completely confident that I would make it. Had to make one stop along the way.
Once again the clutch pedal was stuck at the top and would not depress. I finally slid the safety switch up the clutch shaft to start the truck, when the engine started the pedal depressed. I was able to continue home but the clutch is not functioning properly.
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Odd thing on the 97' Ranger that showed up today. I was backing out of the spot at the local Shell station, (on an incline) and the pedal went to the floor. Never happened before. I pumped the brakes a few times, and they came back. On down the street, slowing for the stop sign, pedal went to the floor again.
Not throwing codes, fluid levels are good, only seems to happen at lower speeds/idle. Sometimes pumping brings the brakes back, sometimes they come back all of a sudden.
I can hear a "sucking" kind of noise coming from where the pedal connects to the booster, up under the dash. I looked at it, and nothing *appears* to be broken.
It almost feels like the pads are against the discs, and the pistons/calipers have to reach for them before the brakes apply. (If that makes any sense)
There should be about 50% of life left on the pads, but i haven't pulled the fronts wheels yet to look.
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1993 Ranger XLT 4.0 AT. Initially replaced ECM for other problems and then noticed Cruise w/n disengage when brake depressed unless pedal is pushed several times and with more pressure. Put in another ECM and have same problem. Have replaced the brake switch and lights come on as they should. When pedal is pushed the vacuum dump valve on the pedal will dump the vacuum to the servo but when you release the brake pedal the cruise control kicks back in and speeds truck back to set speed.
So this tells me that the dump valve is only a fail-safe feature for when pedal is depressed and does not actually deactivate the servo. Everything else with the cruise works fine: On/Off switch, Set/Accelerate, Resume, Coast. How to proceed next? Like where to find speed control module and how to test it? How to check servo to see if it is getting or dropping voltage that will electrically disengage it, etc? Don't want just throw parts at it. The new ECU's that I used came from ECU Exchange in Florida and there still remains the possibility that they are still the problem.
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I have a 2008 Ranger Sport 4x4. I noticed yesterday that when I stepped on the brake pedal it felt like nothing was there until I step a little harder then it was like full brake application. The truck only has 63000 on it. Then every once in awhile it would be normal ie very light brake application and slows like it should. Then back to same issue... Any thoughts about this??
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I have a 2010 Ford ranger sport 4x4, manual, and when backing up at a decent speed, then press the brake to slow up then depress the clutch, the brake pedal pulsates and it feels like something is grinding. It has happened in first once, but I can make it happen in reverse anytime...
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acts like abs sensors could be bad. but the brake pedal goes almost to the floor, after it does it's pulsating. But the abs light does not come on. I already changed brake booster, no change!
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So, a few day i bought an 84 Ranger and even since have not been able to figure out what the hell is wrong with the brakes. I know it's not the brake booster for starters. Because, i went to Auto Zone and picked up a new one and when i took the old one off (before i had put the new one on as well) i tried to see if the brake pedal would now move freely and it won't. It is still very stiff and squeaks when you push it down. i then to get it to return have to pull it up with my foot... What it might be? the WD-40 failed here as well.
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Received the truck, 1989 Ranger XLT long bed single cab from my mom. It had been used by my younger brothers for some years, and then sat at mom's for a couple years.
It needed new front brakes badly, so replaced rotors, and pads. No unexpected problems there.
Looked at replacing the rear. Both adjuster cables were initially broken, so they obviously weren't adjusting, or braking. Replaced with a hardware kit, and shoes, and drums. Its the 9" drums, BTW.
Still not actually braking. I can tell this, when at a stop sign in the winter, with the brake pedal held down, and the backs will still spin, with the tranny in D. Even on gravel or grass, this'll happen.
One shop told me this is because the axle seals are leaking. THey've never leaked badly, and the axle fluid isn't low, by and shade of the imagination. Also, this theory falls apart, when the parking brake works just fine, right? Its just hydraulically that they don't work.
I've since replaced the wheel cylinders, the brake line from the frame to the rear axle, and the master cylinder. No change. Bleeding them doesn't seem to be a problem; i.e. no lack of or little fluid witnessed, it seem fine.
Also have bypassed the RABS valve for about a year or so, and its made no difference. Last fall I pulled the drums off, and manually adjusted them, and it didn't seem much better either.
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What is the likely culprit? No other electrical issues, brake light quit working when brake is depressed, all other lights work including blinkers/running/head. Was going to break out a wiring diagram....
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I just had new shoes, hardware, wheel cylinders, drums, leaf springs, rear shocks, and shackles put on. The brakes were done about 4 or 5 months ago and the springs and shocks just a few weeks ago. The rear brakes were locking up after I had the work done, but I thought they were just too tight. I loosened them a little but it only worked a little.
Now it's starting to lock up pretty much every time I apply the brakes. The ABS kicks on and the rear tires skid. I took the drums off today and didn't see any leakage or anything out of the ordinary. They weren't too tight and I readjusted them but they weren't out of adjustment much if at all. I looked at the Ford symptom chart and it says for brakes that lock up easily there could be sticking or binding components. I didn't see any. Then it says check parking brake components.
Now I see they didn't hook up the equalizer bracket that goes to the front leaf spring hanger when they changed my springs so I assume thats why my parking brake pedal goes to the floor. Then it says check the shoes and linings, which are fine. The last thing it says is to check the fluid control valve. Which I'm guessing is the prop valve.
The only way to check it according to Ford is swap it for a known working valve. One person told me that it could actually be a bad brake booster check valve. Is that possible? Anything else that's common? It's got 272,000 miles on the frame but everything's been changed that typically wears out at least once.
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I have a 2004 Ranger 4x4, 4.0, auto and have trouble with the back brakes howling, locking up and generally driving me nuts. I've replaced the drums, shoes, cylinders, emergency brake cables and all the hardware. We've bled all 4 numerous times, blown out the lines, looked for leaks and done all we can think of. What am I missing?
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I have a '99 Ford Ranger XLT 2WD. I've been having this problem with my rear brakes locking up on me while slowing down and pressing the pedal to stop the forward movement. There are four components which could cause the problem. My OEM Ranger Repair Manual suggested to replace the Proportional Control Valve which I did however that did not correct the problem. I don't have the Brake nor the ABS Warning light coming on and they check out OK during the start up. I have no problems braking from any speed except when coming to a stop. I inspected my front disk and the rear shoe brakes and they seemed to look OK. The other components which could cause the problem are the Control Module, RABS valve and the Speed Sensor. My question is: If any of these components malfunction, shouldn't the ABS Warning Light come on?
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A few weeks back just after buying a new front hub assembly (so I know I have Live Axle 4x4 and 4WABS), a dude on an excavator pulled out in front of me on a blind curve on an interstate exit ramp. Almost got him, then almost got got by the car behind. The hard stop caused a rear line to blow.
When I got home, fluid was still coming out when I pushed the pedal, so the first thing I did was top off the reservoir. I was surprised it was not empty.
I finally got lines that would fit, and replaced both sides. Fast forward a few weeks and I had time to bleed the system. I hooked my vacuum pump to the right-rear wheel cylinder port, opened it and began to pump. Pump, pump, pump, and still no fluid. Tried a few times. Left the pump on, opened the port, (charged the battery), started the truck and pumped the pedal - no fluid. Also, the fluid level did not change in the master.
Master cylinder bleed? Do I need to have the ABS motor bled?
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I recently bought a 2006 Ranger with supposedly 110000 miles... I don't think I made a good deal... because I found the stabilizer end link in terrible shape which seems suspicious for this mileage in my personal opinion!? But this isn't the reason I am posting today... I have a serious breaking issue and I couldn't find explanation yet.
My ABS Light is on. When I slowly brake at low speed and when the brake is almost completely depressed... I hear a low humming sound, and the brake pedal seems to momentarily drop back just slightly. This also happens when I'm going down hill and breaking. For the most part, the car breaks, and it's only every 8th or 10th time braking that I experience this issue.
My guess is this is linked to the ABS... but I can't afford expensive service and need to resolve this on my own.
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Under mild-heavy braking, the rear brakes on my ranger lock up... EVERYTIME. Not just when its wet, or humid. Everytime I hit the brakes hard they lock. I think I'm getting little, to no pressure to the front brakes either. Could it be just a Proportioning valve?
Truck is a 94' 4.0l V6, RCLB, Auto, 4X4.
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It is a 1994 Ranger XLT, Regular cab, two wheel drive, manual transmission and I think it has rear ABS. A front brake line blew which drain the master cylinder. Also a couple of pieces of brake line at the rear had to be replace along with the rear wheel cylinders. After installing the new brake system components we were trying to bleed the system. After reading the repair manual I had it said that vehicles with rear ABS you are to bleed the ABS module before bleeding the rest of the system. There is a module where the book described it (driver's side inside the frame rail) with brake line running to it. I am assuming this is the rear ABS module? I didn't see anything that looked like a bleeder on the module. Where to look? Also when I open the bleeders on the rear wheel cylinder no brake fluid came out.
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Sometimes the LR brake skids MUCH too easily under just moderate braking. Other times it works normally. It's unpredictable. I may drive it for weeks with no trouble and then have a few days in a row when the problem comes back.
It usually happens when the truck has been sitting for a while (several hours or days). sometimes it goes away after driving for 10-15 mins, other times it sticks around a few days then stops.
I had Les Schwab inspect the brakes several months ago and they could find nothing wrong. It's been happening for a year or more.
It's a '99 Ranger, 2 wheel drive with ABS.
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