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Probably not related. Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Thu, 17 Jan 2008 06:04:12
In Reply to: Oil leak @ oil level sending unit?, tz, Wed, 16 Jan 2008 12:19:39 Members do not see ads below this line. - Help Keep This Site Online - Signup |
A common leak point for the oil pressure sender is the oil pressure sender itself. You'll notice it's a plastic piece crimped into a metal section that threads into the engine. That crimp can fail. Replacing the sensor is usually the best bet. That also covers a leak at the threads. I actually bought a car (old Jetta) that the owner thought the engine had a massive oil leak. It was just that the oil pressure sender leaked, and the oil ran down the wire, and dripped off right over the flywheel. The flywheel flung the oil all over the engine compartment. A cleaning and a $3.50 sender, and I had a nice car cheap.
I assume with the check oil light, it's coming on when the oil level is still good. By good, I mean up near the MAX line. It's not good with these engines to run the oil level below MAX.
Assuming the oil level light is coming on when you still have well above minimum, it is probably a sticky sender. The sender is just a float in the oil pan. Visually inspect the outside wiring to make sure the wires aren't frayed and connecting. You didn't mention the year and model - in some years, the oil filter is right over the sender, and it's impossible not to get oil all over the sender wires. And they're at the front of the pan, subject to damage. That changed in later years.
If the sender wires are OK, then you can either ignore the sender light, unplug the sender, or replace the sender. Replacement is easy. At the next oil change, when the oil is drained, undo the screws, take out the old sender, and install a new sender with a new gasket.
Why would I even consider disconnecting the oil level sender? Because it's only a back-up system. The only valid system is to check the oil level with the dipstick on a regular basis. The oil level sender is a float, and it can stick either in the up position - it says you have plenty of oil, even if the pan is dry - or it sticks down, and says you don't have oil when you do. So it could fail and you wouldn't know it, so I consider it a back-up system and I don't rely on it. That said, I replace the senders when they fail.
posted by 192.249....
, Thu, 17 Jan 2008 06:04:12 <-- Viewing This Message
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