RAM ecu ?????
12-29-2005 | 09:38 PM
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From: HADLEY,
MA
RAM ecu ?????
After recieving my new ram 750f,which was all new in the box and factory sealed, I came across this tag on the back of the ecu ????? Any thought on this one!! I am also missing the airline fitting for the low pressure hose for the scuba tank, but there is a clamp? Any help would be greatly appreciated, Thanks
12-29-2005 | 10:56 PM
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From: League City,
TX
RE: RAM ecu ?????
I have the same ECU and the little nipple on the side of the ECU is for pressure. Just get a piece of glow fuel tubing and connect it to the turbine. Perhaps this ECU was sent in at some time for repair and they forgot to remove the label.
JR
JR
12-30-2005 | 11:15 AM
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RE: RAM ecu ?????
Eric, perhaps (as stated above) this was a repaired ECU and all might be just fine. Only way to know is to give her a try. Make sure the NiCads are charged. Hook everything up and turn it on. You should see a temperature reading. Take a lighter and put a flame under the end of the thermocouple (at the exhaust nozzle of the RAM) and you should see an immediate temp rise. If this happens, chances are the thermocouple is just fine. Spin up the engine briefly with some compressed air and you should see the pressure reading on the display show an increase. Problem for me is that it has been too many years since I owned a 750F that I am starting to forget if these readings are always displayed or if they only display after a start is initiated.
Another problem with the older Electrodynamics ECU was that interface plug (that you plug the ground display unit into). Either where the wires go into the plug or the socket (can’t remember which, getting old here!), there was a batch of bad ones made. They soon became intermittent and sometimes you need to wiggle the connector until you get a valid display. I had one that you only had to wiggle it a little and it would function just fine. But then I had another that would get worse and worse until it was hopeless. I found the same connector on an Mac keyboard or something that was being thrown out so I scavenged it and soldered it in for a fix. So if you get no reading or funny stuff, try wiggling (not you, the connector!).
If you have problems, give me another call, you got the number!
Another problem with the older Electrodynamics ECU was that interface plug (that you plug the ground display unit into). Either where the wires go into the plug or the socket (can’t remember which, getting old here!), there was a batch of bad ones made. They soon became intermittent and sometimes you need to wiggle the connector until you get a valid display. I had one that you only had to wiggle it a little and it would function just fine. But then I had another that would get worse and worse until it was hopeless. I found the same connector on an Mac keyboard or something that was being thrown out so I scavenged it and soldered it in for a fix. So if you get no reading or funny stuff, try wiggling (not you, the connector!).
If you have problems, give me another call, you got the number!
