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[Ron Bissett]

Pack -brake works ok . The vac line seems to be off I still do not know where it suposed to connect to awating more information on the line shown in Picture by Diesel4live posted . Ron in Louisville Ky Thaks for your suggestions .

 

[JR]

Ron, the left vacuum line in my hand is the main supply line for all the vacuum lines. It runs down to the vacuum pump. just above my hand is where it ties into the main "header" if you will and supplies the other lines vacuum for the heater controls and cruise and in my case 4 wheel drive.

Hey NIsaacs, Im wondering how the pac brake operates. If there is no vacuum, wouldnt it remain open? Seems like that would be a logical "fail safe" in case you lost vacuum for whatever reason you would still have the function of the truck? Im not familiar with the pacbrakes, so this is more of a question than anything. Thanks,

Jr

 

[DNDracing]

The pac brake I had on my 95 failed open (or not on). When I lost the vacuum line to the solenoid valve to engage the brake, it wouldn't come on when I hit the switch. I agree with D4L, it should fail open.

 

[JR]

What kind of fuel pressure does your gauge show? If youve got good fuel pressure, and youve pulled the air cleaner out to check for any restrictions in the intake plumbing, I cant really think of anything else that hasnt been covered so far to check. Somehow we gotta figure out how to pull that other code up to see whats going on, thats going to be the best way to prevent wasting money and time throwing parts at it.

 

[NIsaacs]

Pack -brake works ok . The vac line seems to be off





Ron, what powers your Pac Brake, vacuum or air?



Nick

 

[Ron Bissett]

Fuel Psi normal at 10 to 12 Psi , gauge . As the Pack brake seems to work normal ,Im part deff and can hear it and see a drop on tac . I will look at the hook up for vacuum from ,its sure not comming from where it should . Its dark and raining now I will look in the AM . I was looking in the 2nd GEN 24 V Engine and transmission FAQ and found a sticky by Toolman Tin Taylor dated 03-14 2004 replies 12 views 17,381 found P1689 (M) No comunication between ECM and injecton pump Module Data link circuit Failure between ECM and fuel Injection pump . Low Power , engine derated or engine stops , Could this be cause of my and what can I do about it . The One inthe code shown on the booklet shows P1 xxx one is dealer spicfic . Please decode this so I can understand it. Ron in Louisville Ky Thand you all for your input .

 

[NIsaacs]

Hey NIsaacs, Im wondering how the pac brake operates. If there is no vacuum, wouldnt it remain open? Seems like that would be a logical "fail safe" in case you lost vacuum for whatever reason you would still have the function of the truck? Im not familiar with the pacbrakes, so this is more of a question than anything. Thanks,

Jr

I am not sure on the above question. The Pac on my '91 takes vacuum to open or shut, same as my BD on my '01, however the Pac on the Ford is only powered on (air) and is spring loaded off/open. Ron might have an air operated style.



Nick

 

[Ron Bissett]

I think its vac . I check in the AM as it dark and raining now Its ben twelve years all ways worked I put it in my self .

 

[cerberusiam]

If your pulling a P1689 on the odometer or code reader it is generally not good news for the VP-44.

If the fuel pump relay in the fuse box is good and the fuel pump working then the IP is probably the culprit.

 

[Ron Bissett]

just lost a reply to this thread . The PAC BRAKE Is vacuum . Found a Plastic line that is to be connedted to the fitting shown in Diesel4life picture bottem is yellow large OD top is black small OD heat caused the hose to degrade ,I was looking for a rubber hose in this case it fooled me in my thinking . Heater and air work fine now ,The cruse I havent tried but think it will work too. I hope its only the ECM and can be replaced ,I only have 59653 miles on the truck. From what is stated on Toolman Tim Talors list of codes give me hope its only the ECM and not the injector pump . What do youall think ? . Thanks for all your help Ron in Louisville KY

 

[JR]

If I had to "guess" at this point I would say its more than likely the vp. If it sat for a few years its a good possibility the piston in the pump became "stuck" momentarily upon start up and caused some kind of damage internally. But that is only a guess and nothing more. Unfortunately both parts your looking at are too expensive to change without really knowing for sure. the best advice I could give is to find a competent diesel repair shop that is familiar with these trucks and get them to diagnose it. They have scanners that cost thousands of dollars and can diagnose it much more accurately than you or I can. It will cost a little more up front but its certainly better than buying a thousand dollar part and finding out that wasnt the issue.
Im sorry I cant offer you any better advice, Ron, maybe somebody else will have an idea. Lots of people on here that are smarter than I am! Let us know what you decide to do!

 

[cerberusiam]

P1689 is not positive indication of an ECM problem, not postive indication of an IP problem either. Could be bad connections and either\or the 2 components.

As long as it sat, have you traced the ECM and IP connection harnesses to make sure some varmit has not chewed them up. Rats love wiring and a non-moving truck is easy pray for them.

Probably should pull all the ECM and IP conecctions to spray clean them and reset them.

What codes do you get in the odometer window and what codes do you get on a scanner? It does make a difference what displays where.

 

[JR]

Hey Cerb, the 98. 5 and 99 doesnt display codes in the odometer like the 00 and up trucks do.

 

[cerberusiam]

Good thing I don't have one of those then. I would be forced to sell it out pure frustration. :-laf NEED a good scanner on them.

 

[JR]

I use my smarty as a scanner its about as good as you can get without spending the big $$$$.
A friend of mine owns a road side repair service for medium and heavy duty trucks he has to spend several thousand dollars every few years to keep up with the modern software programs for his scan tool. Its an amazing piece of equipment though, plug it in, start the truck; (if possible) and it will read real time live data, all the engine functions, sensor parameters, resistance, and a bunch of other things I dont even know about. You can cycle through every sensor and watch how its performing while the truck is running. Takes all the guess work out of it. Its really neat watching him go to work with it. He can even hook it up to light duty trucks (like ours) and know almost instantly what the problem is. Ive gone to him a few times ina pinch not bieng exactly certain what was going on with my rig.

 

[Ron Bissett]

Thanks for all your help Guys and gals, I guess I will take it in to a shop next week as suggested . I hope its some thing that can be fixed and not brake the bank. I will post the out come . what when and how. Ron in Louisville KY

 

[Ron Bissett]

Truck in the shop now ,if parts avalible out friday ,Thanks all . Ron in Louisville KY.

 

[HHhuntitall]

I'll ask for every one else, including myself... . "What was it?"

 

[JR]

Let us know how you make out, Ron.

 

[Ron Bissett]

I posted a reply that truck is up and running it was the pump ,two new batterys as one was making noise teck could hear it I could not do to poor hearing ,he said this when I brought the new batterys in to the shop ,they were from Walley world 04 dated . thanks to all . Ron in Louisville KY