How To Replace an Oil Pressure Sending Unit On a GM 3.8l V6
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- เผยแพร่เมื่อ 2 ม.ค. 2016
- This is a simple video outlining the procedures for replacing the oil pressure sending unit on a GM 3.8L series 2 engine. This particular engine is in a myriad of General Motors vehicles like the Impala, Bonneville, and GM mini-vans. A leaking oil pressure sending unit seems to be a very common problem for these automobiles fitted with this engine. This video coupled with your repair manual should give you the information needed to take on this project successfully. Have fun and be safe!
Torque specification for the oil pressure sensor on this vehicle, 2001 Pontiac Bonneville, is 89 inch/ lbs.
Note: torque may differ from vehicle to vehicle.
Here is a link to another video going further into the location of the sensor.
• Oil Pressure Sending U...
Barbour's Auto Help is not responsible for any damage or personal injury incurred in the process of performing any auto repairs done by you the viewer. It is the viewers responsibility to verify all information and procedures as outlined in YOUR REPAIR MANUAL AND OWNERS MANUAL FOR YOUR VEHICLE. Owning and using a repair manual suited for your vehicle is essential for correctly and safely performing ANY repair to your vehicle. Always wear safety glasses and heed all instructions for use applicable to any piece of equipment you may use. You can do it. Do it right and do it safely.
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Everyone and anyone who makes videos on TH-cam showing how to install something or make repairs on a car needs to watch this video! This is the way a video must be made!! No kidding! The goal of this video was very precise: install an oil pressure switch. The video took an ample amount of time to show the new part, and explain what tools were needed to get the job done. Then the cam focused on the part and the mechanic installing the part. The amount of time to complete the job was just right. There was no time wasted. I have watched 35 minute videos on how to install a simple part that does not take much time. No rambling on and on here. Also, did everyone notice that there was no obnoxious music playing during the video.
+rcharne Thanks!
rcharne this was a thorough video, well put together.... I like to do things in the same manner check out some of my videos... Mostly fords but just picked up a Pontiac thats why im here.
I'd agree, but for the more novice DIY'ers, a little more detail on locating it would be nice.
Its like no 10 min.to replace it,but in the shop,the say that 1 hr and 30 min. to do it,they charge me for $135 plus tax.thanks for video,now i know how to do it.
Grateful for people like you who take time to film and show steps on repairs ! Thanks !!
Just did this job on my wife's 02 Park Avenue. Costed me 1/3 of what the repair shop wanted. Thanks for a great video.👍
No prob.
Saw some videos before, and was ready to take some plastic off, get dirty, crawl under the car, etc, etc.. First I tried to locate sensor.. Took off front (right) wheel. Looked under plastics, here, there, and nothing. I had an oil leak so I followed oil stains... It was just by the oil filter, and it was in front of my nose, hitting me in the eyes ;) .. Really easy, I didn't have to get under the car, and I didn't have to remove any plastics.. And I used 1 1/16 deep socket to remove it. Good video dude.. Thanks.
Thanks bro for this video and to let me know how to change this sensor, I'll be changing it too tomorrow, right now is leaking alot of oil and you had been so helpful, thank you!
Thank you for the great video! You saved me a bill at the mechanic for my 1995 Olds 88 Royale. It's working great every since I swap in a new pressure switch.
Thanks. My sons 2001 Bonneville oil gauge is pinned at 120 psi. i will do this when I change his oil. Torqueing this part isn't necessary. As long as it's tight with the connector tab in the same position which looks like straight up. Good video my friend. Thanks for mentioning the GM weather pak seal
Thanks for the video. Helped me diagnose my problem alot quicker.
Good deal!
Thanks, this is the better video I've seen.
Thanks for the throughout instructions!
You bet!
thanks for the help
Thanks! Good video!
Very well made Video Mine has broken off so here we go ^_^
What did you do to clean the electrical connector
Thanks for the excellent video; I have to replace the gasket on the oil filter adapter on my buick regal. Your video helped a lot to show me where that booger is; I wasn't sure how it was mounted to the block, now I DO know.. Best regards.
Great! Good luck.
Thanks for this.
Thanks for the vid.!
Your most welcome.
Great photo what size open end it take?
Awesome video, thanks
No problem
That's cool great videos !!
hi,im going 2 giv mine an oil change would u say this is an ideal time 2 replace the oil pressure switch? also would a deep socket do the job?
If it’s bad, why not. I don’t think you’ll get a deep socket to work.
God job thanks for the info......
No prob
I took my housing off of my series 3 and my brother went out and started my car. I found the oil pressure relief spring and cap both on the ground. Do you know which way the spring and cap goes back in? Cap into the engine and open end of the spring into the housing?
I'm not sure.
What's the piece the sensor screws into...
I can't find the torque lbs for the sending unit anyone know 98 Bonneville ? please and thank you
I did one yesterday. Super easy. I placed car on ramp and took out oil filter after draining oil. Need an oil change any way. Used an open end wrench.
Sensor was causing computer to turn on oil light randomly at idle and also sometimes showing 120 psi on display console 😮. It was the sensor and not an oil pump. 😊
Glad to hear you got it handled!
Hi. I noticed in your video that the oil pressure sensor was not snugged down to the engine. Does it only go in that far? When I looked at might there was also a tiny gap, like it wasn't screwed in all of the way. No oil was leaking out of it. When I put the new one in it doesn't need to be turned all the way in tight to the engine? Thanks!
You don't have to screw it in until nut meats the engine. You torque it down to the torque specification in your manual. The threads on the sending unit are tapered so it gets harder to turn as you screw it in. It also seals as it gets tighter. Just torque it to the specification in your manual and you should be fine. Just check for leaks afterward.
BarboursAutoHelp Thanks! Everything was great. I ended up getting a 3" extender bar which made the job simple. This was working on a 2001 Buick Lesabre...
Good job!
What's the size of the socket?
Recently the oil pressure on my 3800 II has increased to approximately what you show at the end, after reading right at 40 psi for years previously. My car's gauge has no numbers between 40 and 120, just hash marks. Does the ECU monitor this, and shut down the engine if it gets too high? My engine has occasional shut downs during idle.
5.18.24. 💁🏻♂️The Crankshaft Position sensor will randomly cause stalling. It’s a common problem with the 3800 V6⚠️
What is the torque spec for this?
Lesabre 2002 Need 6 points deep 27mm socket and flexible handle. I used 1/4" drive and 2 adapters. 1/4"f to 3/8"m and 3/8"f to 1/2"male. Worked from passenger side wheel well. With motor off were show 0 kpa and running double of normal 940kpa. Never change with hot engine. After sensor replacement pressure back to normal 445kpa(idle/cold).
Thanks for sharing!
hey barbours is the oil pressure sending unit located in the same place on a 2002 pontiac Bonneville ssei
+James Hernandez let me see what i can find out for you.
+James Hernandez Yes sir, it appears to be similar. The torque spec is 12 ft/lbs for the sensor. Same location. Be sure to verify procedures and specs in your repair manual. ;)
Life saver! I found our issue on the super charged 3.8 now. It wasn't connected!!! 😫😫😫
Do I need to drain the oil 1st or I keep the oil in it... I got a Ford Tempo 3L- V6 and my oil sensor is way above the oil pan...
I see no need to. Unless it’s time to change your oil.
Thanks Keith! In the 6 months I've owned my 03 lesabre, I've had 60-70 psi reading on my dash gague. A couple days ago now it's reading 100-120psi and it says normal on the dash as it did before. Car runs perfect as usual. Oils been changed around 2000 miles ago so I don't think it's that. Could this be the issue? It doesn't appear to be leaking but I really haven't looked at it yet. Thanks.
Its possible. Is it reading that pressure at idle?
@@BarboursAutoHelp yes. At idle its 100 then goes up to 125 when driving. As far as the part, is it the same if you have a digital dash vs. a gauge? Because I have a digital readout, not an actual gauge and alot of the parts houses like oriely and advanced auto only show ones for the gauge
@@BarboursAutoHelp Now today, the digital readout on the dic is normal 130, constantly. So I guess it is definitely the switch(sensor). Also, u are using an adjustable wrench to put yours in so how do you know what the torque is? I can't even find the torque specs for this sensor.
Hey friend I have a? I have a impala ss 5.3 and I'm having a bad oil leak,also when I drive oil is spaying all over everything under the hood and it's coming from the same side that the serpentine belt sits on,where could oil be leaking from over on that side
Sounds like something with high pressure oil running through it. Take a peek. See what you can see.
thanks!
Yep
🤯so much easier than a Chevy Tahoe oil sensor. 👍
OK
Hay how is it foi g?Well im do a buck la cross 05 ,3.8L and it leaking from the connector gasket i replaced the oil sensor and and the connector.But continues to leake.And idea.Do u think it could be oil pressure.?
I'm not sure. Sorry about that.
2002 bonneville heated seat... repaired after stopped working now air bag light on 😔 any ideas
So the air bag lamp came on after having it repaired? If so it sounds like something wasn’t plugged back in.
Does this also apply to a car without a gauge?
O2 grand prix
It may be similar.
i have a 2001 buick lesabre it cranks but wont start do you think its the oil pressure sensor? or what need help
+Javante Robinson I don't think it's your sensor. I'd have a diagnostic run on it to find the problem.
BarboursAutoHelp ok thank you for the information
Do you have to drain the oil to change this sender?
No
what Wrench size did you use?..thanks
My oil pressure sender socket is 1-1/16" and is made for pressure senders. Will have to replace mine tomorrow, hope the socket I have will fit the new one. Socket was for Chevy, hoping Buick is the same.
My Pontiac Bonneville 2001-started with oil pressure going to zero when at a light. While driving-pressure normal. Took it to my mechanic-found oil leak-replaced sending unit. However he said when he took it for a test drive, it went down to 30 1x. Told me to keep an eye on it. As if it does it again-I may need oil pressure pump. He also advised-this could be a problem since my car only has 100,000 miles. And he may not be able to find this item/engine assembly. Since Pontiacs aren't made anymore. Also if he did find one-the chances are that auto-would more thn likely have a lot more miles on that part. Any suggestions-worried?
+Deborah Domenici I'm pretty confident you can get an after market oil pump for your vehicle. Now, if you have actually have had an oil pressure problem there is a chance that engine damage has already occurred. That being said 30psi actually sounds good. Not sure why this is a concern. I don't remember what the specification is but 30 should be good.
The spec for 3800 Series II engine is 414 kPa (60 psi) at 1850 RPM. I don,t know what it is at idle, which can be 750-1000 rpm depending on engine temperature. The phrase "keep any eye on it" when dealing with oil pressure is not what I'd like to hear from my mechanic. Keep any eye on tire pressure yes, keep any eye on oil pressure no. On the highway losing oil pressure - good bye engine, 30 mph on street , jamb brakes and turn off engine, call for a tow.
It could be a wire or connector contact issue, or at 100K miles your oil sump screen could be clogged, or sludge. I hope it worked out for you
Is it the same location for the supercharged 3.8
You'll have to take a look
Was that check engine light a small evap leak? lol. I had a 2003 that would have the engine light on for that never could get rid of it.
I don't remember
hey barboursauto help...I need ya help playa
where is the oil pressure sending unit located on a 2006 Kia Sorento....I need to get it fixed asap
Not sure, Robert. Usually its located around the oil filter. Don't quote me on it.
oh okay cool...I will check there and see if I can find it. thanks alot for your time and patience
No problem. Let me know if I can't help you with anything else. LOL. (sorry I couldn't help better)
Did you have a low oil level light come on with this?
No, this is a pressure sensor that I'm replacing in the video not a level sensor.
any idea how to do it on a 2004 Mazda 6 v6?? ive been looking for the sensor all day and i cant seem to find it anywhere.
Here is a link that I believe has a pretty good picture of where the sensor is located. Scroll down a bit and there is a very nice diagram that has the part high lighted. I believe this is pretty accurate. I don't have a manual so check me on this.
forum.mazda6club.com/3-0l-v6/241472-where-oil-pressure-switch.html
They are usually located near the oil filter. See the link I posted in my earlier reply.
+BarboursAutoHelp awesome this helps alot. Thank you soo much
Your welcome.
Where do you buy the socket
Autozone, Napa, Oreily's, Mac, Snapon, Matco, Amazon..... the list goes on. I'd suggest Amazon.
My 27mm impact socket fit it perfect
I have a 96 park avenue and after working on the power steering pump I forgot to place the connectors that clip on the bank k of the pump back on. The next time I drove the car all the oil was gone and continues to leak out Is it possible that it got caught on something and pulled out the oil pressure switch?
+Nathan Martin Its possible. You'll either need to look at it or have someone look at it for you.
BarboursAutoHelp I was just wondering if it getting yanked could cause that large of a leak
+Nathan Martin Its possible. But, chances are it was bad to begin with. You may have just aggravated it. Did you actually get under the vehicle and verify that's where the leak is?
Cm 9
Q.
That connector with the purple piece on it does oil go thru that or is it just electrical
Just electrical. Not supposed to be oily.
@@BarboursAutoHelp thanks man.. im having a oil leak really bad on my 08 arcadia an cant find the source of it.. but seems like its coming from that area.. passenger side behind alt somewhere
What do they mean by order for either the light or gauge? 03 lesabre. Amazon has one for a light or gauge, when ordering.
Do what?
@@BarboursAutoHelp In other words, is there only one switch (part#), for this sensor? I've looked on Amazon for it and there are either a light or a gauge. It's looks like on your car there, it has a oil pressure gauge instead of a digital readout in the dic, maybe that's what they mean when ordering the part. Idk...
Oh ok
@@BarboursAutoHelp So how do I order the right one? My car has a digital readout in the d.i.c that says normal 130. Do I order the GAUGE or LIGHT sensor?
Do I have to disconnect the battery before I do this?
It's not a bad idea. I would. Be sure you have the security code for your radio before hand.
@@BarboursAutoHelp Thanks for the reply. I loved your video and I wish you all the best.
I have a 02 Regal with the 3.8 and I could not get at it laying on my back, looks like its a little tighter than the Bonneville? Leaking pretty bad it is
Yoda!?
@@BarboursAutoHelp have no idea what you mean
@@deanhauser3569 I was just joking about the last sentence in your first comment, "leaking pretty bad it is". Not sure if you have seen star wars or not but that's how one of the characters talks. His name is Yoda. He usually takes the front of a sentence and places it on the end. Sorry if you didn't get it. Go to bed now I will.
@@BarboursAutoHelp I guess I didn't get it. lol, my neighbor has a car lift in his garage and changed out the sending unit, I'm getting too old to work under cars
My oil descending unit gauge is going from 40 to 120 constantly what does that mean
When is it doing this? At idle? Going down the road? Also, what kind of vehicle is it?
What happens if it goes bad?
Will a bad sending unit make the "check gauges" indicator to come and chime over and over and over?
+Aj Montague They have been known to do that.
BarboursAutoHelp will it also make the check engine light come on?
+Aj Montague on some vehicles it can. Not sure what yours is.
BarboursAutoHelp 95 Bonneville
BarboursAutoHelp bout to get into this right now.
That must be one of those special torque adjustable wrenches.
Super special
Hey, Folks. Here is a link to another video that goes a little more into the location of the sensor. HOPE IT HELPS! th-cam.com/video/V4dCp2oQgYg/w-d-xo.html
Excellent. Nicely done young man, both video and job. Much obliged for sharing. Quick Q: Would this be the same OS Unit for a '94 Buick Regal with the L27 3.8L Series 1? Thanks again.
Not sure. Should be somewhat similar though,
Thanks B for your reply. I kept researching and found (and confirmed) that it is a similar OSU as you said. In fact, I ordered an OEM part for my '94 Regal: New ACDelco Oil Pressure Gauge Sensor P/N 19244519. But the R&R procedure is just as you've shown in this video. Really appreciated. God bless.
Thank you.
Curious, on your Regal was it just leaking? My 94 Regal says no oil pressure on the gauge but the engine runs great and obviously has oil pressure. Trying to figure out if this is my answer
I have a 01 GP GTP and this goes out about once a year. My question is what is causing this? Last time it happened was almost catastrophic.
I got same question.. In two years, I changed 3 of those switches/sensors on my (same) car (01 Chevy Impala 3.8).. For sure something else is causing the
problem?!?!?!
@@yuzeyy7357 I keep two in my glovebox!
@@chadchapman7986 haha I should do that too.. lol
They are notorious for leaking, but I've not seen it that frequently. Idk. Maybe try a different brand.
Chad, sorry I didn't respond to this sooner. See my response to YU ZE Yy.
do you know where this part is on an 01 olds aurora
I depends what motor you have. Here is a link to a google search. Try to find the engine that is in you vehicle and then the location...www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=2001%20oldsmobile%20aurora%20oil%20pressure%20sensor%20location
Carrie and toys
BarboursAutoHelp 2008 Jeep Wrangler 3.7 engine
Where is the oil pressure sensor located on 2008 Jeep Wrangler 3.8 engine ?
What are the torque specifications???
That’s where your going to need a manual.
Hi i have an aveo 2011 the wiring to the oil pressure its all broken the mechanic i hired broke the wiring now im screw would u know how to fix it im one carless any help would appreciate
+Chris Carreon what exactly is broken? Is it just the wiring to the sensor or is the connector broken?
First thing to do is NOT to disconnect the electrical connector. First thing to do is tell and show us where the thing is located. We don't want to replace the wrong sending unit, do we?
I didn’t explain well enough where the sensor is?
Start watching the video at the 55 second mark.
BarboursAutoHelp sure you did if you were speaking to another mechanic while explaining but for us who don't know.....
Here is a link to a video that goes further into the locations of the sensor. th-cam.com/video/V4dCp2oQgYg/w-d-xo.html
Can a faulty Oil pressure sending unit also read as low oil instead of high?
Not sure I understand your question
Yes
My oil pressure gauge sometimes says I have no pressure and my car will shut off, could this be because of the sending unit you’re replacing and cleaning in the video?
Not sure. What kind of vehicle do you have?
It’s a 03 Pontiac Bonneville, same engine as the video
Need to do this on my 92 trans sport gt, hope I will be able to reach it from the bottom
+summitsvift I think you should be able to.
@@BarboursAutoHelp will they leak? Mine is pouring oil from around the harness
The very reason I changed it.
@@BarboursAutoHelp ok ima go with the ac delco one for $22 mine was leaking faster than I thought, only had a DROP of oil on the stick. Gotta change it ASAP
i didnt see what you ment about the rubber inside. and putting it back.
How long did this take you to do
Idk. 30 minutes?
@@BarboursAutoHelp do u think it's the same on a 05 pontiac grand pric
This sensor looks like it's right above the oil filter, correct?
Yes I think so
@@sebastianblake5329 Yup. I changed mine a couple weeks ago. Very easy.
I just replaced the lower intake gaskets and changed the oil on a 2003 Pontiac Bonneville 3.8l. The next day the oil pressure now reads 0 in the dash. Any ideas?
What's the oil level?
BarboursAutoHelp it's full and it runs fine, no noise. I'm gonna look at it in the morning and check the oil pressure sensor connector. If not maybe I'll just replace the sensor.
That could be it.
BarboursAutoHelp Oh boy! I did hook up an oil pressure gauge and it barely gets over 13 psi at high rpm and the lifters are now chattering (noise comes and goes). When I removed the intakes it did have a lot of oil sludge build up (brother n' law never kept up on the oil changes). I went as far as to blow compressed air through the oil filter adapter and the pressure gauge maxes out around 13 psi. Not sure if there is a restriction in the oil sump pick up tube, timing cover or engine block or all 3. My brother n' law wants me to put a new pump and timing cover in it, but I'm trying to convince him to get rid of this rust bucket, lol.
where exactly is it located
Look around and above the oil filter.
+BarboursAutoHelp I changed it and now it reads low engine oil level. at first it was low oil pressure. .and I can't reset it
Check the oil and make sure it is full first. If its full you may have a faulty oil level sensor or a circuitry issue, or possibly some other issue causing this. Check to make sure the oil level sensor is plugged in all the way. This sensor should be located on the side of your oil pan.
I've installed 2 of these and my oil pressure gauge still doesn't work. It worked for about 15 seconds then my "check gauge" light came on then it stopped working and the check gauge light went off. What gives?
Time to have a tech take a crack at it.
How did u clean connector and with what
+J Black I just sprayed brake parts cleaner in it.
BarboursAutoHelp Thanx a lot for reply
Or jut go to hf and buy a 27 mm socket for $4 and some change that's how I got mine out
Thank you
i jusr replaced mine today on a 2004 impala 3.8 series ii K enigine. The sensor is right behind the oil filter if you are looking at it via the wheel well.
+Steve Cogar Thanks
BarboursAutoHelp 99 Toyota Camry v6 oil pressure switch
O
Location of the oil pressure switch 99 Toyota Camry.
V6
+john chin Not sure but check around the oil filter.
What about the oil pressure regulating valve, do you know where it's located on your impala?
I just done that on my Buick Lesabre 2002, and still leaking
Is the sensor leaking or is something else leaking?
@@BarboursAutoHelp Its from the gasket on the conector
@@arturoaguilar2763 probably faulty sensor, you got that aftermarket? gm is 39$ ...i got a lot of problem with cheap sensor
Can they start leaking really bad
Yes
@@BarboursAutoHelp my wife's car went to leaking this morning when you start the car and it looks like it my becoming for their
Check it out. See if it is the switch.
I went the change of the pressure switch.
Light still flickered from time to time.
Comm to find that the thermostat was totally worn into literal pieces.
Hmmm... causing the oil pressure light to flicker?
"adjustable wrench"? I always thought it was an adjustable hammer...
My park Avenue goes from 60-70 to 10 then 50 down to 0 then 60-70 again I think mines failing
It’s always ran great no sounds no rattling I change my oil never any metal
So I can only assume it’s bad
I don't have any idea where is locate that sensor to just jump to uninstall it but you should be put the camera away from the engine and closely get closely and closely to the point where is situated the sensor
Check out the link in the description. I've got a video showing that.
Forgot torque spec
on my 99 oldsmobile 88 I replaced the oil pressure sensor but it still leaked, I thought I didn't have it tight enough, so I attempted to tighten it and it snapped off flush with the block
Oh no! I'm very sorry to hear that! You may be able to get an easy out in there to get it out. Are you familiar with "easy outs"?
+BarboursAutoHelp Not really, I just bought an easy out set, I'm gonna look on TH-cam to learn how to use it
Here is a video... You should not have to drill a hole as the portion that broke off is hollow.
th-cam.com/video/cUWWUGGjLq0/w-d-xo.html
Be careful, don't ruin the threads in the block.
Also, you may be able to get a small socket to fit on the easy out. If so you can use a ratchet to get it out which is easier.....You wont be twisting this one out by hand.
+BarboursAutoHelp alright, thanks for all the useful information, I didn't even think about putting a small socket on the easy out, Very much appreciated, will post results tomorrow
The hole in the old one is bigger than the new one my oil light came on
Not sure what to make of what you said, but thanks for commenting.
Oh great! The sensor I took out ended up being the knock sensor. Where the heck is the oil pressure sensor? 96 Pontiac Grand Am 3.1L V6.
:55
Also, the vehicle featured in the video is a 01 Pontiac Bonneville 3.8L. Different engine and different location. If I where to guess though yours is located near the oil filter on your vehicle. Don't quote me on that though.
Showing us where the part is located would have been helpful
I’ll make another video showing the location of the sensor.
By the way are you having a hard time locating your sensor?
Nice video but is the music really necessary?
+Mark Boucher No, not at all. Sorry. Most my new stuff has a very short intro with no sound at all. Thanks for the complement!
@@BarboursAutoHelp the music isn't necessary but the socket size would be helpful.
Yea, this was a point made years ago. I'm on it. My new stuff doesn't have it. It's a special socket. Oil pressure sending unit socket. Comes in one size.
Just clean it out
O
i'm I only 1 that notice the old sending unit was never all the way on?????
I didn't notice either....
C no
Well.... if that's how you feel? Maybe you shouldn't color fuzzy rocks on the moon. It may upset mother.
Damn that oil looks old
40 second intro is too long bud
Thanks. Ill fix it.
Just took care of it. Thanks again
@@BarboursAutoHelp nice
Been nice if you would of showed where the fuck it was located at lol
Look in the description of the video. There is a link to another video showing the location better.
be nice if he showed where the thing was to start
I have a link in the description to a video showing where it is.
A girls
Grateful for people like you who take time to film and show steps on repairs ! Thanks !!