rickf

Not for a 2wd 4wheel abs truck.

I have a broken front abs sensor on my 2wd 3500 dually. They are no longer made and if you can even find one it seems to be made of gold and has no guarantee. Does anybody know of a reputable supplier?

A one ince drive torque wrench! I didn't even have one of them whne I was doing construction equipment work. I always used multipliers or 3/4 drive and doublers. I did have one drive sockets and ratchet though, of coarse back then I could lift it.

That is a good write up but I am not a fan of impacts on differentials. You are hammering the pinion against the ring and both are hardend gears. I have seen many broken gear sets because of that. I will expend the extra energy to save a grand on a new gear set and the neccesary set up.

Can someone tell me what size socket the pinion nut is on a 98.5 Dana 80 is? I have tried a 1 13/16 and it is a hair small and a 1 7/8 will not fit inside the yoke without grinding the outside of the socket. I am thinking it is metric? Maybe 47mm? Odd size not in most sets. Rick

OK, I am back on this since I have had to use the truck in the snow and it would be nice to have the ABS. I think I can eliminate the wheel sensors because they are two wire sensors which means they generate a signal so they are doing nothing at rest. I am getting the lights on and off while sitting at idle. I have unplugged every plug related to the brakes and also the main harness plug, all are clean. Any ideas? I am on a very limited income and headed towards disability soon so I cannot afford to give a dealer a couple hundred dollars just to hook up a scanner.

What do you want pictures of? I can get some shots of the brake lines coming out of the ABS unit or maybe the sensor wires on the front wheels. I am not going to pull the wheels just to get pictures of the sensors. Actually I still have the window sticker, I will see if it is listed there.

I have 4 wheel ABS on mine. 1998.5

I have not had time to do anything with this but I have been watching far any kind of pattern. This afternoon I started it up and was sitting there contemplating a deer in the yard and noticed the ABS and brake lights would come on for about a minute and then turn off, usually the brake light first followed a few seconds later by the ABS light. Then in a minute or so they would come back on. I watched this happen for roughly ten minutes, on and off. I then drove off and the pattern continued but the lights were seperated for a while with the ABS light coming on for 10 seconds before the brake light and sometimes even alternating. I unplugged the harnesses from the ABS unit and all that comes on then is the ABS light with no brake light. There is no fluid level sensor on the master cylinder. Still looking for ideas, especially since I saw the price of the front sensors. I don't want to replace parts that are not needed.

No ABS? You would have to have front sensors for either 4 wheel or rear wheel ABS.I just priced those sensors on Rock Auto, OUCH!! 130.00!

Thanks Mike, so you are saying I have to replace both fronts or none due to compatibility issues? Can the abs lock out one front wheel alone? If so that would indicate the right side is the bad one due to the issue I mentioned earlier.

Seth, I would normally agree with you on the rear4 sensor but I am having no problems with my speedometer. About a year ago I had to replace the transmission output speed sensor but those symptoms were bad shifting with no codes. I had a rather interesting experience the other day that makes me think front sensor or even the ABS unit itself. I came out of the store and got in the truck and turned the key on, I usually wait for all of the noises to end before starting. One of those normal noises is the ABS unit which gives a "CHUNG" and then the brake and abs lights go out. This time the noise was delayed. When I was driving out of the parking lot I hit the brakes and something just did not feel right but I was going very slow so I could not pin it down. I pulled out on the highway and came up to a red light and hit the brakes and NOTHING!!!!! It was like stepping on a rock, the pedal did not move. I pushed hard and the abs came on and it jerked HARD left and then stopped straight. It has not done that again but I have noticed that at key on when I hear the abs right away the lights do not come on but if it is delayed they are on at startup. When driving they go on and off sometime and others they stay on for hours or off for hours. During the on times the brakes feel normal. Being a longtime mechanic I do not want to throw parts at it till the problem goes away, I want to identify the problem and fix that. Hopefully the added info will be something that someone has run across.Rick

I am getting my brake and ABS lights on intermittently. They come on for a while and go of. I am thinking wheel speed sensor but sometimes the lights come on at startup. This would indicate a hard code and usually an ABS unit problem. My Snap-On brick will not read the ABS codes from the ALDL connector. Any thoughts?

I think this is what you are looking for. http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/26-engine-systems/37-apps-sensor-voltage-adjustment

A little history on the truck might help us determine your issues. Were the pumps put on by you? What is your fuel pressure? What codes do you have? How long have you had this problem/ How did you go about resetting the APPS? We can't help you without some further information. Rick