69superbee440

Got an email back from module masters they said they have never heard of an issue like this

Absolutely that was my intention with the drill. I have had good success in the past making abs wiring like this. Still don’t think it will solve my issue though.

I have been thinking about making new wiring with a drill to go right from abs module to vss because the old wiring does have some repairs. That being said I would anticipate a no speedo issue from any kind of wiring issue not it reading exactly double! Just thinking out loud again....

Hopefully I hear back from module masters first of the week to see if this is an issue they have seen and if they can correct it.

Awesome info thank you! more or less narrowed down to abs module. I agree with you on my front abs sensor bypass makes me suspect it other than it still acted up. I sent an email off to module masters to see if they have heard of a failure like this. What makes me really suspect the module itself is shutting truck down and restarting it fixes it.

I would prefer to leave abs rigged up the way I have it (if possible) because it will never come on if all wheels are always doing the same speed. Personally I don’t like the earlier abs systems. I should add I have disconnected front sensor wiring while it’s been acting up with no change. I am pretty confident issue popped up a couple times before this modification as well. At this point I think it can only be either The abs module or pcm. Thank you for the heads up on the module master folks! I might even reach out to them to see if they have heard of this kind of issue with those modules.

Been trying to solve my intermittent speedometer for awhile now. It is possessed acts up under all different conditions speedometer will read pretty close to exactly double! Sometimes will do it frequently between drives other times can go a thousand miles without acting up. Shut the truck off and restart it’s all good. Checked wiring I found a repair on vss wiring but appears to be good. Replaced vss and inspected tone ring on diff. Speed on my edge matches speedometer when it acts up. Scanned and got code 74, 67, and 65. Should also add that truck has a 4w abs module but front hubs without sensor. I “fixed” this by tying front sensor wires into rear. Was acting up before I modified wiring (unless my memory is slipping which is possible) . I’m thinking ecm issue where it reads exactly double. Open to hear everyone’s thoughts. I’m sure there is lots that I checked that I’m not posting. What makes it worse is when it happens can’t do highway speeds because truck hits governor.

Cleaned up ground on left front fender under battery was pretty crispy. So far so good ? was acting up pretty consistent so we will see what happens. I just installed a edge juice so can monitor the apps if it does act up again. Now if I could just solve my abs issue!

Interesting. We talking voltage drop from a broken/corroded wire between ecm and apps? Or bad ecm? I would think a bad reference wire would throw a code. I could see how a dead spot in the potentiometer in the apps could cause the pedal to go dead without throwing a code

I will do that for good measure I appreciate the quick response and input. I’m chasing an intermittent dead pedal. I have a fass lift pump and a reman vp that was supposed to be less than a year old when I bought truck a year ago. I have done every test I can think of and everything passes. But with how sporadic the issue is I would expect everything to pass. I’m leaning towards an apps at this point but not throwing any codes. I’m not a throw parts at things kind of guy.

Probably a stupid question did the alternator a/c test on my truck reads around .032 say there and watched it for a minute and it shoots up to .09-.1 for about 5 seconds than returns to .032. Does the same cycle like clock work. I’m assuming it is the alternator full fielding?