Anti lock
Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=207960
Printed Date: 27 Aug 2025 at 11:30pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Anti lock
Posted By: Lars(wi)
Subject: Anti lock
Date Posted: 26 Aug 2025 at 9:32pm
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brakes on ‘91 Ford F-350, the RABS module to be more specific. What is the proper way to ‘test’ that module? The rear sensor on the differential shows 1600(ish) ohms, from I been told, that is acceptable? So far, have not found the cause of the ‘Rear Antilock’ light constantly being on. If it went for the cruise control unable to activate, due to this particular warning light, I wouldn’t worry, but no cruise cuts into the mpg. ------------- I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science. |
Replies:
Posted By: fjdrill
Date Posted: 27 Aug 2025 at 6:14am
| Check Third cab roof Brake light. The cruise current runs thru that circuit--it's goofy, replaced two light bulbs there and CC resumed working. LED bulbs in that location will not work. |
Posted By: jaybmiller
Date Posted: 27 Aug 2025 at 6:34am
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Are you saying you have 'no cruise control' ? If so ,was your truck recalled due to the 'master cylinder fire' problem and was 'fixed' by Ford ? If so, then the fuse in the 'repair' has blown as the switch in the master cylinder has shorted to ground . there is an EASY true fix to that problem that gives you back cruise control. ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: Lars(wi)
Date Posted: 27 Aug 2025 at 8:22am
Didn’t know that. I will have to check it out. This truck has a topper on it, with no 3 rd light. ------------- I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science. |
fjdrill wrote:Posted By: Lars(wi)
Date Posted: 27 Aug 2025 at 8:41am
Thanks Jay, don’t know if this vehicle went thru any recall repairs. It appears the Master Cylinder is not original, wheather it was replaced by Ford or not, I don’t know. The fuse in the fuse panel(position #17) is good. Is there another fuse in this particular system? ------------- I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science. |
Posted By: Lars(wi)
Date Posted: 27 Aug 2025 at 11:07am
After further research, ‘91 F-350 was not equipped with the ‘3rd light’. That is the ‘cargo light’ that illuminates the bed. ------------- I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science. |
Posted By: fjdrill
Date Posted: 27 Aug 2025 at 1:51pm
| Yep! my bad. was thinking 3 Brake light was 91. It came in 94. They have given me grief till I figured them out. Actually, a buddy told me about it, and I thought he was nuts! |
Posted By: jaybmiller
Date Posted: 27 Aug 2025 at 1:58pm
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My '97 was one of the ones with the 'flaming master cylinder' along with a long list of cars and other pickups. For that recall , Ford installed a small wiring 'harness' with an inline fuse. When that pops, no more cruise control ! Saves burning the truck toy the ground( neighbours did is 10 minutes ! . Ned to see the wiring diagram, but for mine there's a 24/7 connection to the battery feeding the master cylinder switch that then powers the cruise control 'computer'. Dang silly 'engineering' and NOT needed.... ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: DMiller
Date Posted: 27 Aug 2025 at 5:42pm
| Speedometer MUST be Functional. |
Posted By: PaulB
Date Posted: 27 Aug 2025 at 7:21pm
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Ever since the first fiasco (121 standard) ABS brakes they have been a nightmare. Anything I've ever driven with some kind if ABS system, when in a pinch and your REALLY need to stop, the computer will say "brakes, you don't need no stinking brakes". I feel safer in my old vehicles that are pre ABS than anything new with anything ABS. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |