Question about 1999 Pontiac Grand Am GT

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My check pressure lights stay on i have checked it pressure several time do i need to change the fuses maybe ? and my service engine light has been on for a few days too...do i need to change a fuse and what size do i need to replace them with...

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There is a simple way to get that off call dealer and ask them some is like press gass pedal 5 times diffrent cars diffrent ways

Posted on Apr 30, 2010

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Where is the oil sending unit on a 1996 mercury cougar xr7 ? Its cause my oil pressure gauge is bouncing up and down...i dont know why...can anybody please help me thank you so much


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The low oil pressure warning lamp will illuminate anytime the ignition switch is turned to the ON position without the engine running. When the engine is running, the light also illuminates if the engine oil pressure drops below a safe oil pressure level. To test the system, perform the following:
If the oil pressure light does not work, perform the following:
  1. Turn the ignition switch to the ON position.
  2. If the lamp does not light, check for a broken or disconnected wire around the engine and oil pressure sending unit switch.
  3. If the wire at the connector checks out OK, pull the connector loose from the switch and, with a jumper wire, ground the connector to the engine.
  4. With the ignition switch turned to the ON position, check the warning lamp. If the lamp lights, make sure the oil pressure switch is properly grounded in the cylinder block, and if so replace the oil pressure switch. If the lamp still fails to light, check for a burned out lamp or disconnected socket in the instrument cluster.
To diagnose an oil pressure light that stays on, perform the following:
  1. Check the engine oil level and top off as necessary. If the engine was 2 or more quarts low on oil, test start the engine after topping off the oil level and recheck the oil pressure light operation. If the light stays on, stop the engine immediately and go to the next step.
  2. Disconnect the wire at the sending unit, then turn the ignition switch to theON position. If the light remains on, check the wire from the sending unit to the gauge for being shorted to ground and repair as necessary. If the light goes out, turn the ignition switch OFF and go to the next step.
  3. Replace the oil pressure sending switch with a known good switch.
  4. Start the engine and check the oil pressure light operation. If the light stays on with the engine running, stop the engine immediately to avoid severe engine damage until the cause of the problem can be determined.

WARNING
If the oil pressure light remains on while the engine is started, stop the engine immediately. Do not operate the engine until the cause of the problem can be determined. Operating an engine with low oil pressure will cause severe internal damage.

Possible causes for an oil pressure light to stay on are:


Pinched or grounded sensor wireDefective oil pressure sending unitRestricted or severely leaking oil filterExcessive internal engine bearing clearance.Insufficient or severely contaminated engine oilBlocked oil pump pickup screen or severely worn oil pump

Mar 31, 2016 | Mercury Cars & Trucks

2 Answers

Oil light stays on , oil level is ok


The light is activated by an an oil pressure switch. With the engine not running there is no pressure so it lights up. When the oil recirculates, the pressure increase and the light goes out. Locate yours and change it, they are fairly inexpensive. If it stays lit after a change it may indicate something more serious.

Feb 15, 2016 | 2006 Isuzu Ascender

2 Answers

3.5L V6. Why does oil pressure light turn on intermittently?


1. As a basic measure I would make sure the correct grade and spec oil is going in the engine. You can no longer trust that a local mechanic or even a dealer service center will necessarily use the required product as stipulated by the manufacturer. It is always better to buy and supply your own so you know the correct product is being used.

2. I would not assume there is a problem with the oil pressure warning light even though there could be.
The first thing the mechanic should have done when you reported the oil pressure issue is to hook up an independent mechanical oil pressure gauge and check oil pressure when the engine is hot at different RPMs. Any oil pressure issue will usually show up at idle when the engine has been warmed up properly and the engine oil is hot (unless you have some kind of intermittent oil pressure relief valve that is sticking). Just replacing parts without actually knowing what the oil pressures are at different RPMs is being sloppy and negligent.
This is what you need to do now. Contact a business that can hook up their own pressure gauge to your engine and have them check the oil pressure readings at various RPMs when the engine is fully warm. If there is a low oil pressure issue it will show up on the oil pressure gauge. As you have a new oil pump there should be no issue now with oil volume or a sticking oil pressure relief valve which on your engine should be part of the oil pump assembly.

3. Worn engines will not be able to sustain required oil pressures. Oil pressure is not produced by the oil pump. The oil pump produces oil flow but the resistance to flow is what produces the oil pressure and that resistance is created by fine clearances between operating engine parts especially on the crankshaft and components connected to it. Once the engine wears the clearances increase and the oil flows past the parts much more easily and produces/builds much less pressure.
How well your engine with over 90000 miles has been maintained depends on how often all the owners changed the engine oil and filter , whether they kept the engine oil level up to full (most owners rarely ever check oil levels between services) and whether they always used the correct product. Manufacturer oil change intervals shown in service schedules can be 10000, 12000 miles or more which is much too infrequent for the type of use 95% of private vehicles experience which typically are on the severe to very severe use end of the spectrum. Engine oil typically needs to be changed at least at half the mileage shown in service books (at least twice as frequently) and thus at least every 5000 miles if you want your engine to last.

Feb 01, 2016 | 2011 Hyundai Santa Fe

1 Answer

I have a 99 saturn sl, my engine fan keeps going out cant pass service light on


I believe that the reason that your fan is staying on,and causing the fuse or fan motor to go out,is because you have an overheating problem. Which could be several things....water pump,radiator,thermostat,or blown head gasket.I would have the whole cooling system checked first. Secondly,where are you buying the fan motors at?

Sep 29, 2012 | 1999 Saturn SL

1 Answer

97 caravan check engine light, transmission will not up shift from 1st.


The only reasonable part is the labor charge. I couldn't second-guess the shop's recommendation, maybe both parts are needed, but you could have them replace the shift solenoid, and try driving it for awhile, see what happens. Then if you need the TCM, try a used one from a salvager for less than half the cost of new. That is something you could install yourself.
Whatever you decide, good luck.

May 03, 2012 | 1997 Dodge Caravan

1 Answer

My car has several lights on and im not sure why. I have 2001 olds alero with 125,000 miles on it. The service engine light and the anti- lock and abs lights come on and stay on here lately. any clues why?...


I'll try to answer these as asked.
1. check engine light is telling you that you have an emission control problem and needs to be scanned for codes.
2. The abs and traction control light are connected and when the abs sets a problem code it will turn both on , It also needs to be scanned for codes.
3. Having a tire that is a diffrent size or more worn than others will set the tire pressure lamp and it can be cleared by removing the fuse panel door on the side of the dash and holding the red button in with the key on engine off untill it flashes or beeps and goes out.

Jul 28, 2010 | 2001 Oldsmobile Alero

3 Answers

Ford Mustang service engine soon and check fuel cap lights are on


Check fuel cap light will not immediatly go out upon replacement of the fuel cap. Might take several days. You could go to a local autoparts store and have them read the trouble code (for check engine light) and reset it. If it was indeed the fuel cap the light should stay off after resetting it. Most autoparts stores do not charge a fee to do this.

Oct 23, 2009 | 2001 Ford Mustang

1 Answer

Check engime light comes on and off


If you hear any ticking or knocking inside the engine do not drive it. You could change the oil pressure sending unit if there's no noise, most times that will fix the problem. It is advisable to put an external mechanical pressure gauge on there, either temporary or permanent...then, you can read the actual pressure...
I prefer gauges to lights because most time lights (either temp or oil) tell you "you have just blown your engine", instead of warning you when a problem is just beginning.

Sep 24, 2009 | 2008 Jeep Commander

1 Answer

Oil pressure light


Oils in long over due service forms **** which can't be circulated properly under normal oil pump pressure causing Crank shaft or cam shaft bearing recieve the lubricant quite late. The said bearings could be damaged.

For the light, the oil pressure switch could have accummulated some **** which is making it malfunction.

Jan 30, 2009 | 2000 Kia Sportage

2 Answers

The check engine light is on and the check oil light stayed on even though the oil was just changed


If your engine isn't rattling, the oil pressure is probably OK; I wouldn't drive it far until you have someone with a pressure gauge check it however. This normally takes only a couple of minutes of service time. 

The oil pressure sensor/sender is one of the most unreliable devices in our cars for some reason - maybe just cheap. Your car probably also has the pressure sensor telling the computer to turn on the 'check engine' light too so if the sensor fails, you get both.
There is a remote possibility that the oil pump has failed but they are more reliable than the sensor and if you haven't noticed any change in engine noise, you are only a few bucks away from a 'no idiot lights' condition. 

Dec 12, 2008 | 1998 Pontiac Grand Prix

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