Question about 2002 Ford Explorer

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When i come to a complete stop the oil gauge moves to L. The message center displays low oil pressure and warning signal say high temp low oil. When I start to drive everything goes back to normal. Took it to the ford dealer, they replaced the the oil sender unit. This did not help. What could be the problem?

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  • miyasmom Jul 04, 2010

    I have a 2002 ford explored. When I put on brakes and come to a complete stop the message center displays oil pressure low, the oil gauge drops to low and wht warning signal light says hi temp/low oil. took it to the ford dealership to diagnosis said it was the oil sending unit had it replaced and also a oil change. the problem still exists. When i am driving everything goes back to normal. what could be the problem?

  • miyasmom Jul 04, 2010

    I have a 2002 ford explored. When I put on brakes and come to a complete stop the message center displays oil pressure low, the oil gauge drops to low and wht warning signal light says hi temp/low oil. took it to the ford dealership to diagnosis said it was the oil sending unit had it replaced and also a oil change. the problem still exists. When i am driving everything goes back to normal. what could be the problem?

  • miyasmom Jul 04, 2010

    The solution was very helpful. I got a better understanding of what was going on with my truck by talking with someone on line. This person seemed to have more experience than those at the ford dealership i visted today. I will reccommend this site to everyone.

  • Anonymous Mar 11, 2014

    rebuilding engine. when battery connected ignition switch on, the check gauges are staying on & motor runs very rough

  • Anonymous Mar 11, 2014

    1987 ford f-150 instrument cluster diagram

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2 Answers

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  • Ford Master
  • 6,826 Answers

This is not a good sign ,you have low oil pressure for a reason,have the oil pressure checked,but most likely it is too low,the mains,and rod bearings most likely are showing there wear,already.The oil pump,most likely is not the problem,for it is pumping,there is just not enough pressure due to the wear,of the bearings.

Posted on Jul 04, 2010

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  • miyasmom Jul 04, 2010

    so are you saying i need too replace the rod bearings

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    Yes,and the main bearings,and the cam bearings,but it is not that easy,the crankshaft needs to be measured with a caliper,you will most likely need to have the crank turned,and purchased oversize bearings,or purchase a crank kit,yes,the engine will need to be removed and gone threw,it might be as cheap,and easy to purchase a new rebuilt engine with a warrantee.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    well what did you come up with> Do you know witch way you are going to go?

  • miyasmom Jul 04, 2010

    about how much money am i looking at spending?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    You can price the engines on line I think auto zone,or napa,oriely`s see what you come up with,I would say about 2200 dollars,but I might be off

  • miyasmom Jul 04, 2010

    what are the possiility of finding one in a salvage yard?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    oh yes,good chances,and most likely cheaper too,a lot,maybe 350 to 600 dollars

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    that is a good idea,,but put a rear main oil seal it it before puttinf it in,so you will not have to pull it back out.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    ???? what?

  • miyasmom Jul 04, 2010

    Am I causing more damage to it by continuing to drive it until i find an engine?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    Your not going to need the engine,but if you put 20w 50w motor oil,and a bottle of lucas it will help the oil pressure.

  • miyasmom Jul 04, 2010

    lucas? whats that and where can I fine it?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    Lucas oil treatment ,napa carry`s it,and autozone,and orielly`s it is real thick,and it is some good stuff.

  • miyasmom Jul 04, 2010

    just had two oil changes in 3 days. Can I just use the lucas oil treatment. Is it put in the same place you put the oil?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    Yes this is correct,you will have to drain a quart,to add it

  • miyasmom Jul 04, 2010

    Thanks a lot? You gave me more information than what i got at the ford dealership today. I paid them over 300 dollars for nothing. thanks again

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    Thank you please rate me good,I need it,thanks and good luck.

  • miyasmom Jul 04, 2010

    one more question, why do all the signals dissapear when Im driving and appear when i come to a complete stop?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    replace the flash for the turn signals,and the flasher for emergency,if this does not help,look for a bulb that is bad,but it could be lighting up ok,but is shorted,and is back feeding,and if there is not one ,then the turn signal switch will be the problem.

  • miyasmom Jul 04, 2010

    no, not the turn signals, the the low oil pressure and hi temp/ow oil warning signals dissappear when i drive and appear when i stop?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 04, 2010

    oh,ok,they come on because of the low pressure of the oil,if you put the 20w50w oil,and the lucas,it might bring the oil pressure up,just enough to turn them off.

  • miyasmom Jul 04, 2010

    thanks

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  • Master
  • 1,050 Answers

This is an indication that you have engine bearings that are failing. Some people may suggest trying a new oil pump, and this is a possibility. However, from my experience, most of the time the new pump will not help, especially if the engine has high mileage. As the engine gets older and the bearings wear out, their operating tolerances increase and oil gets pumped passed them too easily. When this happens you will see the oil pressure light come on because the pump cannot support the volume that is required to feed them. You may have noticed that as the engine warms up, the light comes on sooner. This is because the oil thins out as it gets hotter and flows more easily. You could try a heavier grade of oil, maybe a synthetic to help you nurse the engine a little further. The cheapest repair would be to find an engine from a low mileage scrap vehicle and have it installed. If you plan on keeping this truck for a long time you might consider having the engine rebuilt but that would be very expensive.

Hope this helps,
Dave

Posted on Jul 04, 2010

  • 3 more comments 
  • miyasmom Jul 04, 2010

    Why does all the signals dissapear when i start to drive and only appear when i come to a complete stop?

  • miyasmom Jul 04, 2010

    have you ever know of replacing the oil pump to work?

  • miyasmom Jul 04, 2010

    Am I causing more damage by continuing to drive it?

  • Dave  C
    Dave C Jul 04, 2010

    As you drive, the oil pump runs faster and pumps more oil so it can keep up with the demand. When you are idling, the pump is running slowly and the loose bearings drain of too much oil for the pump to keep up with. Eventually this will result in engine failure but it is hard to say when, and yes I have seen it many times. The first sign of trouble will come as a knocking sound from the engine.

  • Dave  C
    Dave C Jul 04, 2010

    Sorry about the delayed response. As far as trying a replacement pump...it's a gamble at best. It would be helpful to know the mileage on the truck, but still, oil pumps rarely fail. I'm sure you will have many people tell you to try replacing the pump, but it is expensive and if it doesn't work it will just be money down the drain. From my experience, 9 times out of 10 the bearings are the problem and the pump replacement strategy turns out to be wishful thinking.

    How many miles are on this engine and how often was the oil changed?


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