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Re: 2001 chevy venture oil sending unit
On a problem with oil pressure sensor leaking.
99% you need to replace the sensor with a new one.
Because if you can see the leak is not for the tread or gasket of the sensor.
If you can disconnect the the wire from the sensor.
and try to start you will see the leak coming from inside on the plastic, where the pins. of the sensor.
OK.. I hope this information work for you.
I work on Cars everyday.
Thank you fo use fixya.
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171 is bank one lean. 1189 is the oil sending unit. Start with 1189. Replace the oil sending unit. They always fail. Never had to fix wires for these. Probably leaking oil anyways. 171, Two places to look on these 3.4/3.1 engines. First is the vacuum lines and rubber fittings. Best to check them all, but bank one is one the radiator side of the engine. Also the intake upper plenum is known to crack around the bolts. Use WD40 . start the engine and spray it around the intake. If it starts running better, you have a crack or bad gasket. Fix as necessary.
You got it, Common for the plastic top where the wire leads connect to crack. This will cause the oil to leak and at worst, what you have indicated happening on your Blazer. Note; when installing the new sensor, do not use any Teflon tape on the threads. The sensor is tapered and works best to have a good ground, so just tighten it enough to keep the oil from leaking. Good luck friend and make sure you pick up the right oil sending unit sensor. One is for just a light to activate and the other is the one you need to be able to give you a oil pressure reading. Best to go at a Dealer for this part with your VIN number.
You can buy a florescent dye to add to the oil and a light to make the dye really shine. Clean the engine with "brake clean" from a spray can at the oil leak areas ....then run the engine. Check for the start location of the leak. Start with a short run time ....... then longer run time if necessary until the leak(s) show. With or with out the dye ......this brake cleaning method should help locate the leak(s).
Oil leak locations could be...in order of the most common on your car are........valve cover gasket,oil filter,oil pressure sending unit,drain plug,oil pan gasket,crank pickup sensor,rear seal.
Yes it's the right direction but because of so much heating and cooling those bolts get really tight.Spray alot of penetrating oil (WD-40) on and around the bolts.You may even want to tap the wrench on the bolts in the opposite direction slightly (tighten) to help loosen their adherence,then try the right way to losen them.Dont use a torch! It'll melt the "O" ring on the caliper piston.Take your time
easy to change u just need a special tool for removed on front of motor at right of oil filter its look like a coolant sensor or a little bottle with a connetor removed the connector and take the tool to remove