Oil pressure sending unit
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=25846
Printed Date: November-19-2024 at 3:37am
Topic: Oil pressure sending unit
Posted By: marmon77
Subject: Oil pressure sending unit
Date Posted: May-04-2012 at 11:19pm
| I replaced my oil pressure sending unit but the gauge still pegs all the way to the right when the boat is on. Your thoughts? Thanks |
Replies:
Posted By: Big t
Date Posted: May-04-2012 at 11:58pm
| Mabie atheist sender wire is frayed and grounding some where between the sender and gage? You could temporarily add a cheep mechinacal gage to see what the pressure is. |
Posted By: OverMyHead
Date Posted: May-05-2012 at 12:05am
|
Did you use anything like Teflon tape? I hear the unit needs direct electrical contact with the block. ------------- For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats. 1987 Ski Nautique |
Posted By: 8122pbrainard
Date Posted: May-05-2012 at 9:30am
|
Mark, Remove the gauge sender wire (at the sender itself is easiest) See if the gauge still pegs. If it does, then yes, the sender wire is shunted (shorted) to ground. If it doesn't, with the sender wire still disconnected, Ohm between the sender terminal and ground (engine block). If you get a near zero reading the sender itself has an internal shunt to ground. Replace it. (a battery powered test light will work too - if it lights up, then the sender is shunted) Teflon tape on the sender pipe threads may cause a open circuit because it may insulate the sender to the block. The block is the ground for the gauge. If this was the case, you wouldn't get any gauge reading. BTW, has anyone been doing any wiring on the back side of the dash?  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: marmon77
Date Posted: May-06-2012 at 5:14pm
| No teflon tap on gauge going to block, and I haven't been messing with the wiring behind the dash, so I'll remove the wire and test it that way. The sender is new so I wouldn't think it would be bad buuuut you never know. Thanks! |
Posted By: 8122pbrainard
Date Posted: May-06-2012 at 5:34pm
|
Mark, What testing did you do that indicated to you the sender was bad requiring it's replacement? ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |