My 2002 Ram with a 4.7 engine runs fine, but when I stop and the engine goes to idle, the oil pressure drops to zero and the check guages light comes on. The engine idles around 600 RPM. If I bump the throttle just a touch to about 1000 RPM the guage jumps right back into the normal range, then it drops to zero about 10 seconds later. It is fine while the truck is moving and the RPMs are above idle. I have changed the Oil and filter and the oil level is good. Any ideas?
2006-11-20 01:21:44 · 7 answers · asked by juan v 1 in Cars & Transportation ➔ Maintenance & Repairs
I drive a 97 Jeep TJ and the oil sensor goes bad almost weekly. I listen to the engine when it behaves exactly the same as you describe. I never hear the traditional knocking/tappet clatter of an engine without oil flow. I have installed an oil pressure guage on the sensor tap and it pumps a solid 60 psi of oil pressure.
Suggestion, try picking up an oil sensor at a local parts house, change it out and then drive your truck a little. Sounds to me like that's your issue. Should not be a huge job, just a little bit cramped to get to. And the price of the sensor should be around 40-60 dollars. Just keep an eye on your oil levels either way. Other than the sensor, at worst, the pump is bad (doubtful) or the pickup tube strainer has trash clogging it(doubtful also). Best of luck.
2006-11-20 01:29:30 · answer #1 · answered by Rich B 5 · 1⤊ 0⤋
i own a repair shop,and it sounds like it has a bad oil pump on it,,or what might have happened is the sending unit is going out on it,this will make the light come on,but it will still have oil pressure on it,the sending units on these trucks did give a few problems and if its still under warranty id take it back and let the dealer repair it i have repaired a few here at the shop,but why pay when you can get it done for free but id say that's whats causing it to do this,because if it lost all its oil pressure it would make some noise ,,good luck,i hope this help,s
2006-11-20 01:36:51 · answer #2 · answered by dodge man 7 · 0⤊ 0⤋
It's likely the sending unit that’s the problem the sending unit is on the motor around the oil filter. These have a habit of getting plugged with sludge and going out. You may want to try a detergent to see if you can clean the sensor but often you need to replace the sending unit. They can be as cheep as 5 bucks or be as much at 30.
2006-11-20 01:36:37 · answer #3 · answered by gearnofear 6 · 0⤊ 0⤋
I had a much earlier engine exhibit these symptoms, but it had high mileage on it at the time. I finally had the engine rebuilt and found that the cam bearings were worn smooth out. Since your truck has a lot less mileage on it, I wouldn't suspect the cam bearings, but a loose oil pump (in the crankcase) can show these same symptoms. To check this is a chore, but you will have to remove the oil pan to torque the bolts. It remotely could also be a defective oil pump, but it is worrisome enough that you should have it checked out. Its working at running rpm says that it is not extremely serious, but it will get worse if it is a bad pump or loose bolts.
2006-11-20 01:29:53 · answer #4 · answered by Doug R 5 · 0⤊ 1⤋
I'd have the shop check it out pronto! Probably a bad oil sending unit, if it's not low on oil. But you don't want the engine to seize, do you? Check the oil with the engine stopped. (I know, but just last week someone asked that!)
2016-05-21 22:10:02 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Gage is broken..Or [hope not] your oil pump or main bearings are shot. yah oil pressure sending unit could b bad
2006-11-20 01:27:05 · answer #6 · answered by Anonymous · 1⤊ 0⤋
try changing your oil pressure switch or oil pressure sending unit.
2006-11-20 01:29:15 · answer #7 · answered by milwmcnutt 2 · 1⤊ 0⤋