Low oil pressure?
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Low oil pressure?
12-08-2004, 09:27 AM
It's me again.
Same car. ('93 Cav, 3.1 V6)
When I first start the engine, from a cold start, the oil pressure guage shows about 2/3. (I think that's about 310kPa.)
Everything's fine until I start driving and the engine warms up. The oil pressure drops to 1/4 of the guage (about 130kPa), and only rises to 275kPa when I'm accelerating...
I have checked for leaks in the oil pan, and of course checked the oil level. Everything looks good. In fact, I just changed my oil, so I know it's not because of bad oil.
I have read some information on products like Lucas, additives for your oil that can help with this, but I don't want to put any of that shit into my car unless I have to.
What do you guys think?
12-08-2004, 02:15 PM
Oil pressure drops when the oil gets warm and is thinner. However, if your used to your gauge giving higher readouts than it does now, there could be a problem, possibly a weak oil pump. I'm not too familiar with the Kpa system, I'm used to oil press being measured in pounds.`
12-08-2004, 03:31 PM
It's the same guage as your car apparently. Whatever your 1/2 mark is the same as mine. Just that mine's in kPa.
Normally I wouldn't worry too much about this, but a friend of mine noted that it should be higher... So I thought I'd ask.
What's the regular idle oil pressure for the V6 engine? PSI or kPa, either one, I'll just convert it.
12-08-2004, 03:38 PM
for 93 3.1 oil pressure is only 8pounds @600 rpms;not sure what that is in kpa
12-08-2004, 03:51 PM
Perfect. Nothing to worry about. 8 psi is 55kPa.
Us crazy canucks with our metric system...
Thanks for the quick reply.
12-08-2004, 04:21 PM
So is everything cool then? They don't put factory oil pressure gauges in the '95 and newer Cavy's but I have a mechanical aftermarket oil pressure gauge on one of my Mopars with a 318 V8 and oil pressure is always higher when the engine is cold.
12-08-2004, 04:25 PM
Yep, everything seems fine. If the 3.1 is supposed to have 8 psi oil pressure (55kPa) at 600rpm idle when warm, then I'm right on the mark.
Now does anyone know anything about the problem I'm having with the heater motor? :)
12-08-2004, 04:29 PM
Do only a couple speeds on the heater fan work? Its a relay, a common problem.
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