This is long winded so be patient, I have a 2001 Fleetwood Discovery 37G, i have been experiencing the dreaded gauge cluster issue where they would go off, come back, on off, stay on, go off etc.
Now it has progressed to where if i would turn on the lights or put it in reverse the gauges go dead. The lights work, trans is ok, but i will also mention that sometimes when driving and the gauges go dead (yes all gauges) the Trans will shift into 4th gear even while driving at 65 mph and it slams into 4th and wont let me out even if the gauges come back on, only way to get out of it is to stop the vehicle and manually put it into 1st and go again. Now funny thing is this does not happen all the time, i think it only happens when the gauges go dead for a period of time (in other words if it only spikes on and off it does not effect trans).
Here is another strange thing, blinkers work normal while no lights are on, but when you turn on the lights the right blinker stays on on the message center.
The above is a quick version of the problem i am having, i have been on the phone with Frtliner for hours for a straight wk, and of course they just keep recommending i buy all the high dollar parts. I had Camping World look at it and they had no Clue, had a mobile mechanic in the coach for 4 hrs at 100 bucks and hr and came up empty. The pins were checked for voltage on the VDC unit, and by (remco from frtliner) to replace so i did, nothing changed. When that was changed out i got nothing on the gauges at all, but since then i can get them to come on but only by turning the key completely over and starting the coach (sorry forgot to mention it does start), then it was recommended to replace the MC (message Center) did that nothing changed. Changed the Alternator, nothing changed, Have checked Grounds/voltages/ fuses etc still at a loss as to whats up.
Then i was out there goofing around with it and noticed something, when the gauges go out there appears to be a voltage drop, i can see on the volt gauge that its charging well then when it goes out you can see b4 it happens that the voltage gauge goes into discharge.
When i put on my lights you can see every few seconds (and hear via the engine surge) something is sucking up my 12volt side, and it will stop after a while and then kick in again and every other second or so it will do it again. The lights go dim for a sec and you can hear the engine bog down for a sec then goes back to normal.
I am at a loss as to what can make it do this, supposedly C.W. checked the batts and said they were good (not that i trust them) there has to be something pulling my volts down which in turn is not supplying enough 12vts + to keep the gauges going etc.
Could it be the inverter/charger? could it be bad batts? could it be grounds i cant find, could it be in the BCC?
I'm looking for help cause i already spent over 3k trying to get it going correctly, keep in mid that it was working perfectly prior to it starting to dance on the message center.
How do you drive something that has no gauges? cant take to Frtliner as they told me it was Fleetwood issue as they only supplied the parts for the chassis and fleetwood would have been the ones to install this area, but guess what fleetwood has to say, yup that is not them it is a freightliner issue!.
Thoughts? PLEASE HELP!