Classic ZF trouble..?? 87FC35
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09-12-2006, 02:23
Post: #10
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Classic ZF trouble..?? 87FC35
Alan, when you jump pin 19. also jump the wire that fed pin 19.( may
be a relay/ solenoid that needs amp back line) Sounds like the starter thinks the trans is in gear. Or try and de energize the control modual completely, start the rig , then plug in pin 19 with a new hot. It may not hurt to fuse the new hot with a low amp glass fuse. You could ask zf what the amp draw should be and if it pops the fuse you have a short some place that may only happen after some event. If all else fails just rent a Lodge from MikeH. GregoryO'Connor 94ptRomolandCa --- In WanderlodgeForum@yahoogroups.com, "Alan" wrote: > > 5pm Monday update: > > I spoke to Dan at ZF trans in Chicago. He was extremely helpful. > We verified I do have low voltage. (7.5v) On my control module > wiring harness, pin #19 is the hot wire. He told me I could jumper > it from a 12 volt source until I locate my problem. I was anxious > to try this to move my coach from in front of my house (so my > neighbors don't get upset). > > I started the coach, applied 12 volts to pin #19 and the > transmission engages better than it has in the 2 months i've owned > it. So, I turn it off. Put a few things up and get ready to > relocate it to my back yard. > > Now the coach won't turn over at all. I also discovered my front > load panel has a 75amp relay. I was only getting 7.5 volts out of > it to my lower row of circuit breakers. I subsequently bypassed > this relay, but the coach still won't turn over. Is there another > ignition relay somewhere? > > Ideas? > > Thanks, > Alan Johnson > > > --- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor" > > > > > Alan, the other half of power supply is ground. Worth a check. > > Gregory O'Connor > > 94ptRomolandCa > > > > --- In WanderlodgeForum@yahoogroups.com, "Alan" > > wrote: > > > > > > It seems I am experiencing the classic ZF trans problem of not > > going > > > into gear. It has been kind of slow engaging lately and now it > > > won't move. **One potential variation is that I noticed my > > > tachometer does not seem to be registering properly. At idle, > > > sometimes it was reading around 1500 rpm, and sometimes it's a > > > little irratic. (The engine is idling normally.) But I don't > know > > > if there is a connection between what my tach registers and the > > > trans. > > > > > > So i've read all the posts here I can find about this. I have > > > located my throttle position sensor and it appears to be in tact > > and > > > functioning. I'm now on to the next thing potential problem and > > > that is a the low voltage problem. I have also found the fix in > > the > > > database. The fix says to check the voltage and find the ZF > power > > > supply. I've found what appears to be ZF control module. It is > > > located underneath the push button gear selectors behind a > panel. > > > It has a large connector on top of it with lots of wires going > into > > > it. I HAVE NOT found what might be the power supply. > > > > > > So I've got a couple of questions if any one has experience with > > > this: > > > > > > 1. Where might I look for this power supply. (What does it look > > > like?) > > > 2. When I find it, I can use a Fluke, so I am anticipating no > real > > > problems in getting to checking voltage..?? Yes? > > > 3. If I do find a problem with the power supply, the fix > instructs > > > me to "retrofit a new power supply". Is this something I can > get > > > from BB or ZF?? Or something I can pick up at Napa?? > > > > > > Thanks in advance, > > > Alan Johnson > > > 87FC35 > > > Dallas, TX > > > > > > |
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Messages In This Thread |
Classic ZF trouble..?? 87FC35 - Alan - 09-10-2006, 14:16
Classic ZF trouble..?? 87FC35 - Gregory OConnor - 09-10-2006, 17:17
Classic ZF trouble..?? 87FC35 - Alan - 09-11-2006, 09:41
Classic ZF trouble..?? 87FC35 - pattypape - 09-11-2006, 11:13
Classic ZF trouble..?? 87FC35 - one_dusty_hoot - 09-11-2006, 12:09
Classic ZF trouble..?? 87FC35 - Alan - 09-11-2006, 16:51
Classic ZF trouble..?? 87FC35 - erniecarpet@... - 09-11-2006, 20:17
Classic ZF trouble..?? 87FC35 - dspithaler@... - 09-11-2006, 20:52
Classic ZF trouble..?? 87FC35 - pattypape - 09-12-2006, 01:53
Classic ZF trouble..?? 87FC35 - Gregory OConnor - 09-12-2006 02:23
Classic ZF trouble..?? 87FC35 - one_dusty_hoot - 09-12-2006, 02:24
Classic ZF trouble..?? 87FC35 - Tom Warner - 09-12-2006, 03:17
Classic ZF trouble..?? 87FC35 - one_dusty_hoot - 09-12-2006, 04:12
Classic ZF trouble..?? 87FC35 - pattypape - 09-12-2006, 12:41
Classic ZF trouble..?? 87FC35 - Jeff Miller - 09-13-2006, 01:23
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