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  #1  
Old 09-03-2010, 01:38 AM
Mr Crusha Mr Crusha is offline
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Unhappy 2002 Ram 1500 Oil Pressure

New to this site and a new onwer to the Dodge family. I have a 4.7 engine and notice that my oil pressure guage drops to zero and then a second later moves back to the middle of the gauge. I spoked to a so call machanic and he said its my oil pump. Because of the complications to replace the pump, the labor is very high.

I called a near by Dodge dealership gave them a discription and they too say this could be a oil pump and their labor is about the same as the independant machanic. So I figure I research this and found this site.

I am asking for you alls thoughts and suggestions before I make a move. I do not need to be throwing money if my problem is something other and/or much less...
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Old 09-03-2010, 06:21 PM
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Old 09-03-2010, 09:04 PM
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It could be the oil pump going bad loosing its prime from low oil or blockage from sludge build up. Those are the most likely issues i dunno if your a motor head or not but oil pumps in this motor arent the worse thing in the world to do but still a pretty good task. If you know how to wrench it should only take a few hours.

Hope this helps
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Old 09-03-2010, 09:30 PM
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While I am no mechanic, when I had that problem on another vehicle, I consulted a couple of different techs and they said it could be anything from the pump to the sending unit to the gauge, but good luck and I sure hope you get it figured out soon and welcome to the forum since I see you're new here!

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Old 09-03-2010, 09:34 PM
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yeah its very possible actualy being the opsu cheaper fix than an oil pump for sure and a good start cant go wrong with new opsu ever lol
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Old 09-03-2010, 10:14 PM
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I would install a mechanical gage and see what the oil pressure really is . You may have a bad sending unit or gauge .
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Old 09-06-2010, 10:45 PM
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Talking There Are Known Problems With The 4.7 V-8..........

But I will address "your" symptoms first. I have read many consumer complaints, and articles that describe your symptom to a "T". In most all cases the pressure drop was caused by oil sludge clogging the sump, and eventually the destruction of the engine. This is caused by not changing the oil and filter on a regular basis (3000mi. or 3mo.), and also changing the PCV, if you have one. My first step in your case would be to change my oil & filter out "twice" in a fairly short amount of time to clean the engine, and change the PCV. That's the cheapest fix I can think of, and I hope it works for you, considering I don't know your mileage, or weather conditions where you live.
FYI, I to have an '02 Ram Qcab SLT 4WD, w/4.7, that I've had for 8yrs.. I change my oil every 3000/3mo. with Pennzoil Platinum 100% Synthetic oil, and I use Fram Filters. I also add 12oz. of MotorKote once a year, (2oz. per qt.). You cannot get MotorKote at the store, only online @mymotorkote.com, or at some truckstops. So far everything is fine, and I hope it stays that way. I also noticed a 2mpg jump in gas mileage when I started using MotorKote, and it guards against dry starts, which helps me a lot here in Wyoming in the winter, which is 9-10mo. of the year, and it can get -30F here real quick. This truck has also made 4 trips to the East coast and back with no problems.
Not trying to influence you here, just telling you what works for me.
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Old 12-31-2010, 02:17 PM
Mr Crusha Mr Crusha is offline
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Accept my apology for not following up and thank you all for your post. I was able to troubleshoot the problem; I had very little oil in the truck. After a basic oil change, the problem went away. I have since done 2 more changes and the issue I was having never came back.

I recently purchase the truck and had yet to get it serviced fully. From what was told to me, the truck was rarely driven, only to a nearby store for about a year.
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Old 12-31-2010, 08:31 PM
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Glad you got it resolved. But, with it having little oil in it, I'd be REALLY skeptical about the story you got on how the truck was used because it certainly wasn't maintained.
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Old 12-31-2010, 10:53 PM
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IDK, checking the oil is one of the very very few things I check BEFORE deciding to even buy a used vehicle. Condition and levels of the engine oil, coolant, transmission fluid, diff fluids etc. can tell you a lot about how a vehicle was cared for previously.
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