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Cavalier Problem Diagnosis Got a problem you can't fix? We can help. |
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02-05-2006, 11:41 PM | #16 | ||||||||
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Re: Oil Pressure Gauge drops to "0"...
Meh...don't pay him any attention...he's just a kid.
You should still check your fluid levels. It's hard for an engine to maintain proper pressure when it's too low on oil. But...I'm willing to bet your car doesn't have this problem as badly until it warms up, does it? Just run some thicker oil, Diva. Next time you take it in to get an oil change (or the next time you change the oil...which ever applies to you), just put in something a bit thicker and you'll be good to go! One of my cars back in the day used to do this so I put some oil with a higher viscosity in it and the problem went away. Now...to address this annoying ass kid... Quote:
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A) I don't have to tow it anywhere...I can drive it........ B) Why the HELL would I have you work on it when I do it my self? C) Your sentences make no damn sense, man...I assume you meant... Quote:
D) I don't need to take the ~4 hr trip to the only Akron I know of to defile you, kid...you should be offended now. Stay in school. Now, it's been fun, but just leave me alone, will you?
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Who cares what's in your wallet...what's in your garage? VG30ET in process of rebuild on left and my 88 300ZX NA, 2 Seater, 5-Speed...my 3rd Z31 Hope you can see the tiny pic...AF reduced the size limit! Beer is living proof that God loves us and wants us to be happy. --Benjamin Franklin
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02-06-2006, 08:27 AM | #17 | ||
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Re: Oil Pressure Gauge drops to "0"...
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02-06-2006, 12:27 PM | #18 | ||
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Re: Oil Pressure Gauge drops to "0"...
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02-06-2006, 10:51 PM | #19 | |
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Re: Oil Pressure Gauge drops to "0"...
Poetrydiva,
Contest is over on my end. You stated, " I have no idea what the RPMs is at when it happens. The 91 Cav. doesn't have an RPM guage " If your car has an automatic transmission, RPM while idling should = 700 RPM. If you car has a manual transmission the RPM while idling should be 750 RPM. Above RPMs are acheived once engine is fully warmed up. If the above RPMs drop too much below these values, you will know. The car will vibrate excessively ( rough idle ) and will feel like it is ready to stall. More than likely it will stall. I learned a long time ago to never say, it can't happen. Your engine RPM could be dropping below this limit which, would invite lower oil pressure readings. I am just going on what you have already stated, that your car is running the best it ever has. So I would just rule this out for being the cause, at least for the time being. You could check the PVC valve though, just to make sure that its hose isn't crimped and that the valve in the PVC is functioning correctly. That would only cost you your time, no money. Also, your oil pressure should be 12 psi at 1200 RPMs minimum, hopefully more. If you let your car sit overnight, go out in the morning, and start it. Your car will be (or at least it should be) idling much faster than if, it was already fully warmed up (engine running for more than 15 minutes). This high idle is about 1200 RPMs and is normal till the engine warms up, then the RPMs should fall gradually to 700 or 750 RPM, known as low idle. What does the oil pressure gauge read in the morning after you start your car while in high idle? I know you said that you just had the oil changed by your grandfather, how many miles ago was this? Do you know, or can you ask him what type of oil he used? You should be using an API grade of SG or SG/CD with a 10w-30 viscosity (good for outside tempertures down to -15 degrees below zero) Did he replace the oil filter? Other than having to shell out another $20 for an oil change and your time to do it, it would eliminate the oil from being one of the possibly causes. Oil breaks down (gets thinner) and can cause low pressure problems. I am not trying to be picky here, I know that you are on a limited budget. Considering all of the money, time and sweat that you have already invested in repairs for this car, I would have to believe that you really want to keep your car, especially running. A shop will charge you around $50 for this oil pressure test in my area. Someone else mentioned having your grandfather test this for you, then it wouldn't cost you anything but a hug and a smile. There is yet another option for you that is very good and cheap. Your local High School just might have a Vocational Auto Mechanics Program for the High School students wanting to become mechanics. Give them a call and find out, if they don't have this program, ask the next town. You may be placed onto a very long waiting list but, it is dirt cheap and you'll be helping those kids to learn a trade. You'll get your car fixed, and it will be repaired correctly. It might take longer than you like, but it will get repaired for the cost of parts and a very small fee. Give them a try. Don't run thicker oils. Your engine was not designed for that. It will eventually damage your engine, especially in these winter months. Thicker oils cannot get between the piston rings and the cylinder. Doing this will cause much wear in these areas. Wear in this area will cause, low or no compression. Bottom line-you'll be yanking the engine and replacing everything again. Please, check my information with any GM service department. . Last edited by Ed_in_Akron; 02-06-2006 at 11:39 PM. |
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02-07-2006, 01:51 PM | #20 | ||
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Re: Oil Pressure Gauge drops to "0"...
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02-09-2006, 04:59 PM | #21 | |
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Re: Oil Pressure Gauge drops to "0"...
longlivethez:
Yes, it doesn't do anything until the engine is thoroughly warmed up. I'm running 10W-30 right now. I thought that was the highest viscosity I could safely run. |
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02-09-2006, 05:37 PM | #22 | ||||||
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Re: Oil Pressure Gauge drops to "0"...
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Yes, I know he put on the filter. I watched him do it. Quote:
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Better scoot. Got to get home. Going to play Romance of the Three Kingdoms II with hubby. :-) Ahhhh. How I love the weekend. |
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09-08-2017, 07:52 AM | #23 | |
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Re: Oil Pressure Gauge drops to "0"...
I know this thread is from years ago but this same exact thing is happening to our 2003 chevy blazer. Started 7 days ago, the coolant was low and tempature got hot but not redline and the oil gauge and gas gauge were not working then we added coolant and they started working again but the oil gauge used to always stay between 20 and 40 closer to 40 while driving but now its different.
When we 1st start vehicle it stays close to 40 like before but after it warms up a few miles down the road theit stays close to 20 while driving but drops to barely above 0 or to 0 when stopped at a red light then goes back up to almost 20 while driving. Got oil change yesterday. No smoking, noises, ticking and its not running any different. Was this ever figured out? |
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09-14-2017, 06:06 AM | #24 | |
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Re: Oil Pressure Gauge drops to "0"...
Go to Advanced Auto or Auto Zone get a loaner test gauge install it and get reading.
You could have bad bearings,sending unit, gauge or bad bulb. |
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09-14-2017, 10:44 AM | #25 |
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Re: Oil Pressure Gauge drops to "0"...
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