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brianfwb
Dodge Dakota
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7/12/2007
20:56:44
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 Subject: Low Oil Pressure?
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I have a 2003 Dodge 4.7L V8. I had a seized engine and had a reman engine installed. After installation, my oil light came on. I had the oil pressure checked with a mechanical oil guage and found it to be around 6psi at idle at around 35-40psi at 3,000rpm. My mechanic suggested the oil pump that came with the reman engine may be defective, so I put a new oil pump in it. I am still having the same problem. The warranty company on the reman engine refuses to do anything because they say 6psi is a normal reading, however, it is apparently kicking the oil light on, so there is still a problem. Any ideas or suggestions? Thanks!
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daddio
Dodge Dakota
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7/12/2007
22:16:41
| RE: Low Oil Pressure?
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unfortunately, even though they are on the lower end, those pressures are within factory specs.
the FSM says @ normal operating temp - 6psi min and 30 to 80 psi max @ 3k rpm.
could be a faulty oil pressure sending unit. could be cam or main bearings. only way to tell is pull it apart and check clearances. i'd try a new sending unit first. or try changing the oil & filter.
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fram sux
Dodge Dakota
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7/12/2007
23:19:05
| RE: Low Oil Pressure?
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you wouldnt happen to have a Fram filter on there would you?
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OBIO3
Dodge Dakota
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7/14/2007
22:45:33
| RE: Low Oil Pressure?
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Shoddy rebuilders do this kind ofs sloppy work a lot. The engine cost to much to ruin quickly. You must tare that that engine down and mike everything
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jayb
Dodge Dakota
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7/15/2007
10:19:31
| RE: Low Oil Pressure?
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1. thats normal pressure.
2. replace sending unit.
3. a reman should be under warranty so if it does f*ck up, you can get another one for free.
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brianfwb
Dodge Dakota
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7/15/2007
13:17:39
| RE: Low Oil Pressure?
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Thanks for the responses. The engine IS under warranty, however, the warranty company is sticking with the claim that the oil pressure readings are within the normal/acceptable range, so they won't cover anything. Tearing down the engine at this point is not an option, as I cannot afford it. I was hoping someone could give me a better idea of what could cause the low oil pressure, or what could cause the light to kick on. I have already replaced the sending unit and the oil pump, and I am still having the problem.
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daddio
Dodge Dakota
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7/15/2007
15:07:46
| RE: Low Oil Pressure?
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have you tried changing oil & filter brands?
i think we listed some causes to low oil pressure. more than likely the main and or cam bearings are on the max/loose end of the tolerances.
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JerryM
Dodge Dakota
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7/15/2007
17:03:47
| RE: Low Oil Pressure?
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Changing oil and filter might be a good idea. Not sure, but a slightly higher viscosity oil might help too.
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