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| Oil Pressure Light - strange behavior? https://slantsix.org/forum/viewtopic.php?t=43257 |
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| Author: | MattyBrown [ Sat Jan 15, 2011 10:56 pm ] |
| Post subject: | Oil Pressure Light - strange behavior? |
Hiya folks. Tonight I started my car ('73 Valiant) and drove it for about ten minutes on the highway when the oil light came on. Very very faint at first and it just sort of flickered until eventually, maybe five minutes later, it was super super solid and bright. I immediately pulled over at a gas station and checked my oil level. Right up to the full line, although I must admit, it's getting pretty black. Regardless of what the problem is, I'm going to do an oil change ASAP. Anyways, I continued to my destination which was only about 3 minutes from the gas station. Stayed there for a few hours, enough for the car to cool down completely. Time to go home, started the car. No oil light until about ten minutes of driving on the highway again. Same exact thing... faint flicker at first which grew brighter and brighter. Is this typical behavior? Any recommendation for my first course of action? Filter getting clogged? Oil pump going bad? Don't think I've sprung a leak because because oil level was good. Also, didn't hear any clicking valves or anything that would make me think oil wasn't getting to the top. THANKS IN ADVANCE FOR POINTING ME IN THE RIGHT DIRECTION!!! -Matt |
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| Author: | emsvitil [ Sat Jan 15, 2011 11:02 pm ] |
| Post subject: | |
The oil pressure relief valve on the pump can get stuck open. remove and clean the relief valve |
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| Author: | Aggressive Ted [ Sat Jan 15, 2011 11:05 pm ] |
| Post subject: | |
or the wire end/clip on that connects to the sender is not making good connection or hanging by a thread, or contacts are very oily not making a good connection...... |
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| Author: | emsvitil [ Sat Jan 15, 2011 11:09 pm ] |
| Post subject: | |
http://www.slantsix.org/forum/viewtopic ... ing#129642 |
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| Author: | Charrlie_S [ Sun Jan 16, 2011 5:00 am ] |
| Post subject: | |
Install a mechanical gauge, in place of the sender, at least temporally, to verify oil pressure. If the oil pressure is good, look for an electrical problem (bad sender, wire, etc). If the pressure is bad, check the oil filter first, then relief valve, as stated (easiest). After that sorry to say, it would be possibly a bad pump, or time to drop the oil pan, and check the pickup, and/or bearings. |
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| Author: | 4speed [ Sun Jan 16, 2011 5:32 am ] |
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Quote: or the wire end/clip on that connects to the sender is not making good connection or hanging by a thread, or contacts are very oily not making a good connection...... No, not true. If the wire is making bad/little or no contact with the sending unit you would get nothing-no light at all. Unit works by grounding the wire through a switch inside its self. With no oil pressure it is "on", oil pressure keeps the switch "off"/no light. They do leak oil inside them selves around the switch. I bet your oil sending unit/switch is bad. R&R the oil sending unit. It cheap and most store will have one.
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| Author: | MattyBrown [ Sun Jan 16, 2011 8:03 am ] |
| Post subject: | |
Thanks for all the info guys. Gonna get right on it. -Matt |
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