| Author | Message | ||
| David Evans (Dmd)
Registered Member Username: Dmd Post Number: 322 Registered: 10-2004 Posted From: 173.68.141.145  Rating: N/A |
I am no electrician! i cannot get the engine oil pressure or temp guages to read. I am concentrating on the temp guage now as i have a low oil light that works. When the ignition is turned on, the guage pegs as if the sender is grounded. This is a new VDO guage with matching sender. I have continuity in the wire to the front from the engine on the sending wire and 12v off the dash. I am suspecting somthing in the wiring as the prev. owner did a rewire but never got the oil or temp guages working. The bus is a Silversides converted to neg ground. I did a archive search and thought i would check here first before i waste too much more time. I wold really like some working guages! Thanks Dave | ||
| Dave (Virtual)
Registered Member Username: Virtual Post Number: 31 Registered: 5-2009 Posted From: 67.186.253.131 Rating: |
An easy test would be to string a temporary wire from the sender around the side of the bus, through the window, to the gauge in the front. Once you get a good reading, you can play with the existing wire. Maybe you can use the existing wire to pull in a new one. Or add another wire alongside. Then cut out the bad one once you are sure. FWIW | ||
| David Evans (Dmd)
Registered Member Username: Dmd Post Number: 324 Registered: 10-2004 Posted From: 173.68.141.145 Rating: N/A |
Thanks Dave, i have a long wire for testing cont. so i will try that. My gut feeling is a ground issue since the previous owner/builder was pretty good, but he never got this working. | ||
| Dave (Virtual)
Registered Member Username: Virtual Post Number: 33 Registered: 5-2009 Posted From: 67.186.253.131 Rating: N/A |
I hear you. I hate that type of problem. If you can get a 'known good' wire in between it'll be less frustrating. I'm sure we both wish it wasn't a bad wire but know it probably is. Good luck. | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 822 Registered: 10-2006 Posted From: 76.195.79.226 Rating: |
Sounds like at one time you removed the dash and gages. On the sports-car (GM) there is a wire that grounds the gauges that is captured under the screw that holds the dash on. Miss reinstalling it and you get JUST the results you posted/ Don't Ask how I know!!! FF | ||
| David Lower (Dave_l)
Registered Member Username: Dave_l Post Number: 161 Registered: 11-2007 Posted From: 67.58.201.132  Rating: N/A |
Come on Fred how do you know? :-) Dave L | ||
| George M. Todd (George_mc6)
Registered Member Username: George_mc6 Post Number: 870 Registered: 8-2006 Posted From: 64.55.111.6 Rating: |
Dave, Take the wire off the temp sender, and flip on the master. If the gauge still pegs, its the wire. If the gauge now doesn't move, put the wire back on the sender and look again. If pegged now, either the sender is shorted, or there is a mismatch between gauge and sender. A bad ground will result in a low reading, not a really high one. Happy hunting, George | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 824 Registered: 10-2006 Posted From: 76.195.79.226 Rating: N/A |
I found the dash ground failure with VDO to be a much lower than normal oil pressure reading and a very high water temp reading. Sure to make one PUCKER! FF | ||
| David Evans (Dmd)
Registered Member Username: Dmd Post Number: 325 Registered: 10-2004 Posted From: 173.68.141.145 Rating: N/A |
And the winner is......  | ||
| marvin pack (Gomer)
Registered Member Username: Gomer Post Number: 519 Registered: 3-2007 Posted From: 71.55.197.237  Rating: N/A |
ACE?? gomer | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 925 Registered: 11-2005 Posted From: 208.54.200.78  Rating: N/A |
P2V-5 or close to that, one of my favorites. | ||
| David Evans (Dmd)
Registered Member Username: Dmd Post Number: 326 Registered: 10-2004 Posted From: 173.68.141.145 Rating: N/A |
Ok, the winner is Fast Fred and i put a P2V up in his honor (and my Dad used to fly these things) I love the Neptunes! Gus you are right on! You have any experience with the P2's? But anyway,thank you Fred,it turned out to be that the dash guages were NOT getting a good ground. I ran a wire to each guage and then to one of the bolts that hold the panel to the frame. Problem solved. I wish i had the 3-4 hours of last Sunday back! Anyway thanks again board of boards and to Ian. I am becoming a picture maniac on the busnutfacebook. I posted the pics i took at Hershey and some of our repower on the 3703. | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 926 Registered: 11-2005 Posted From: 208.54.200.8 Rating: N/A |
David, In my younger days I was an AT3 in the Navy and always wanted to aircrew a P2V (Never could bring myself to call them P2s after Navy aircraft designations were change), but ATs were pretty much stuck at electronic shop benches. Your Dad was a lucky man!! Glad you solved the ground problem, that turns out to be the problem in a lot of bus electrical systems, mine included. I found that corrosion at terminals, terminal ends and the wiring at terminal endss to be my biggest problems. | ||
| Bill Laird (Billaird99)
Registered Member Username: Billaird99 Post Number: 22 Registered: 4-2008 Posted From: 24.163.34.244 Rating: N/A |
Gus, I too was an AT3 when I left the service in 1986. I worked at the calibration lab (PME-670) on N.A.S. Oceana in Va. from 1983 - 1986 Bill | ||
| David Evans (Dmd)
Registered Member Username: Dmd Post Number: 328 Registered: 10-2004 Posted From: 173.68.141.145 Rating: N/A |
Hey Gus, thanks for the comeback. My dad ALWAYS loved flying and especially the P2V. He dident especially love the Navy unless he could fly. He was in VP 7 in Brunswick Maine ( i was 4 or 5 ) and then he was a flight instructor in Pennsacola for awhile then went to Whidbey Island while he was in VP-42. I think they did 2 tours in Nam once based at Cahm Rahn Bay. He ended up doing 22 years. He used to say he was an Ex sub killer. My dad was cool. Boy did we butt heads when i was 15-25! There is a really good web site www.VPNavy.com that has some great pics. | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 835 Registered: 10-2006 Posted From: 76.216.70.120 Rating: N/A |
Thanks Dave , that is a great shot of a Neptune. As part of my Navy flying I ended up in a VRF (ferry ) squadron. To them a P2 was a P2 and I got to take a bunch to DMA , the boneyard. Today there probably back in the air as water bombers , as they were tough old birds although the 3350 was no bed of roses to keep operating . I was power plants officer in the VP squadron so I know fur sure! There WAS A HUGE difference in the wheelhouse of a P2V5 and a P2V7. The 5 looked like a WWII cockpit , levers for everything , the 7 was "modernized" and had a different cock pit. Sure all the numbers (TO, Climb, Cruise and landing) were the same , and they flew identical , but it was a real shock climbing in a 5 the first time, could almost hear the "Victory at Sea " music. In every VP squadron the new guy is SLJO SHi**Y Little Jobs Officer. Weight and Balance is the worst , as these aircraft were OLD , when I got there. But in the files were all the pictures and installations for the fun stuff. The twin roof cannons in the photo , twin 30's in the bow and armor for the cockpit,plus a whole lot more . Fun to contemplate what the old birds could be set to do. OFF bus topic , but with the bus PROBLEM SOLVED , why not? And it is a great photo. FF | ||
| David Evans (Dmd)
Registered Member Username: Dmd Post Number: 331 Registered: 10-2004 Posted From: 173.68.141.145 Rating: N/A |
Thanks Fred for the info. They had a machine gun in the nose bubble on the first tour in Nam but not on the 2nd. They only were shot at taking off and landing! On return from deployment i remember they all landed and were gathered way down the field and we were all jumping up and down wondering why they hadent all taxied back to where all the families were waiting. Well when they came back towards us they had put "drag" shutes on the tails like the jet jockeys. I remember everyone laughing. The worst was a lost plane on a run up to Alaska. They looked for it a long time. Thanks again. | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 840 Registered: 10-2006 Posted From: 76.216.70.120 Rating: N/A |
The best fun we had was "Change of Command" ceremonies. As an air squadron they thought having a fly over would be nice. Since the old CO would be replaced by the new CO we never bothered much with his orders. You haven't lived till you hear 4 P2's take off as a section! Yup 4 planes in a diamond (we are all Blue Angles at heart when your 25)rolling down the runway at once, and lifting off together. Enough cacophony to warm the soul of a Harley owner! 8, 3350's and 8,J34's real music. FF | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 927 Registered: 11-2005 Posted From: 206.40.238.224 Rating: N/A |
Bill and David, I was out of pocket a few days but nice to hear all this Navy talk. I'm an old guy now. In my younger days my eyes failed me so I had to give up the idea of Naval Aviation and went into Supply. It wasn't bad, stayed 32 years!! Can't say I miss it, retirement is great. I got my civilian license, became a CFI, and have owned four little airplanes along the way. The one I have now is a 65hp two seater and loads of fun. |
