Jump to content

Jimmy825

Puppy Poster
  • Posts

    6
  • Joined

  • Last visited

Everything posted by Jimmy825

  1. Purchased a new pump and the old one has a breather in the hub. The new one does not even have a threaded hole for the breather. Is the breather needed and should I just return to Mack and see if it is the correct pump to use without the breather
  2. Thanks but mine has to be done manually and then the DIP pins have to be set
  3. I bought a truck with a brand new pai speedometer in it and the idiot that owned the truck took it out of the box and put it in without calibrating it. I called the man I bought it from and asked if he had the paperwork that came with it and of course his answer was, We just took it out and put it in and then threw the box away, and in doing so, along with the paperwork. I was wondering if anyone else might have replaced their's with a pai FSP-0544 and might have a copy of the programming instructions. I know it's a longshot, but pai will not help anyone if you are not a distributor. Sad that you have their product and won't help anyone ! !
  4. I have a 97 RD688s with an E7 350. When driving along when cold outside, my temperature gauge does not go up very much and if I idle, the heat I get goes cold. If I put a piece of cardboard in front of the radiator, it gets warmer and on a hard pull, it will get up to 180 to 200 and then level out after the pull back to around 130 to 140. But if I idle, it blows cold. I bought a winter front recently and will try that but I was wondering if it may have a stuck open thermostat. Or does a Mack just run cold all the time. I have never experienced a truck having an issue like this
  5. Yep, changing filters doesn't help it at all. Not many good Mack mechanics left around here in the Baltimore/Washington area (that I can find) that know how to work on mechanical Mack engines. Had 3 look at it so far and they can't figure it out. My problem is hard to explain and best when they drive it and still can't figure it out
  6. I have had this roll off truck for just a little over a year. When I had it inspected, the man told me I had a plus because it had the fuel pump replaced because it was a slightly different color and had yellow markings at the injector lines and a few other places. I about fell out when he said it usually runs about 3 grand to do a Mack pump because I have always been a Cummins dude. Ever since I got it, it hardly had any real amount of smoke come out like most other Macks I see that do and it has a delayed turbo boost. I had a slight miss when idled up a few rpms so I bought a set of exchange injectors from Mack put in by another shop. At first it seemed like it did a little better then went back to the same thing the next day. I returned it back to the shop and he suggested I take it to a Diesel injection shop as he said there was a pump problem and not injectors or the work he did. At times I can pull up to a traffic light and when I take off, the truck wants to go like crazy and a large cloud of black smoke behind in which I barely have smoke come out at all and after that, it is real sluggish as usual. If I mash the pedal to the floor and hold it, it will end up dying unless I let off the pedal a schmid and wait for the boost to kick in. Or I can just ease down on the pedal going down the road just to gain a little speed and it will kick in and again if I floor it, it will continue to die. Now it seems like I am losing power real bad when I get to a hill while I have an empty or half loaded Vac Box which are normal after dumping the majority of the load off. The truck has about 350,000 on it, it is a 1997 RD688 with an E7 350 mechanical and a Fuller 8LL. Top end is about 75 to 77 and about 82 downhill .... I can hit 80 and top a hill at 55 and before I could top it at 65 on the same hill any other time so now I know I am having more of an issue ... Any answers to this ??? NOTE: rubber strap in picture was used as a test to make sure I was getting full throttle
×
×
  • Create New...